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-rw-r--r--Documentation/virtual/kvm/api.txt132
-rw-r--r--arch/s390/include/asm/kvm_host.h2
-rw-r--r--arch/s390/kvm/diag.c4
-rw-r--r--arch/s390/kvm/gaccess.c294
-rw-r--r--arch/s390/kvm/gaccess.h21
-rw-r--r--arch/s390/kvm/intercept.c4
-rw-r--r--arch/s390/kvm/kvm-s390.c238
-rw-r--r--arch/s390/kvm/kvm-s390.h38
-rw-r--r--arch/s390/kvm/priv.c93
-rw-r--r--arch/s390/kvm/sigp.c4
-rw-r--r--include/uapi/linux/kvm.h46
11 files changed, 752 insertions, 124 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index ee47998ec368..0d7fc66289a0 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -2716,6 +2716,110 @@ The fields in each entry are defined as follows:
eax, ebx, ecx, edx: the values returned by the cpuid instruction for
this function/index combination
+4.89 KVM_S390_MEM_OP
+
+Capability: KVM_CAP_S390_MEM_OP
+Architectures: s390
+Type: vcpu ioctl
+Parameters: struct kvm_s390_mem_op (in)
+Returns: = 0 on success,
+ < 0 on generic error (e.g. -EFAULT or -ENOMEM),
+ > 0 if an exception occurred while walking the page tables
+
+Read or write data from/to the logical (virtual) memory of a VPCU.
+
+Parameters are specified via the following structure:
+
+struct kvm_s390_mem_op {
+ __u64 gaddr; /* the guest address */
+ __u64 flags; /* flags */
+ __u32 size; /* amount of bytes */
+ __u32 op; /* type of operation */
+ __u64 buf; /* buffer in userspace */
+ __u8 ar; /* the access register number */
+ __u8 reserved[31]; /* should be set to 0 */
+};
+
+The type of operation is specified in the "op" field. It is either
+KVM_S390_MEMOP_LOGICAL_READ for reading from logical memory space or
+KVM_S390_MEMOP_LOGICAL_WRITE for writing to logical memory space. The
+KVM_S390_MEMOP_F_CHECK_ONLY flag can be set in the "flags" field to check
+whether the corresponding memory access would create an access exception
+(without touching the data in the memory at the destination). In case an
+access exception occurred while walking the MMU tables of the guest, the
+ioctl returns a positive error number to indicate the type of exception.
+This exception is also raised directly at the corresponding VCPU if the
+flag KVM_S390_MEMOP_F_INJECT_EXCEPTION is set in the "flags" field.
+
+The start address of the memory region has to be specified in the "gaddr"
+field, and the length of the region in the "size" field. "buf" is the buffer
+supplied by the userspace application where the read data should be written
+to for KVM_S390_MEMOP_LOGICAL_READ, or where the data that should be written
+is stored for a KVM_S390_MEMOP_LOGICAL_WRITE. "buf" is unused and can be NULL
+when KVM_S390_MEMOP_F_CHECK_ONLY is specified. "ar" designates the access
+register number to be used.
+
+The "reserved" field is meant for future extensions. It is not used by
+KVM with the currently defined set of flags.
+
+4.90 KVM_S390_GET_SKEYS
+
+Capability: KVM_CAP_S390_SKEYS
+Architectures: s390
+Type: vm ioctl
+Parameters: struct kvm_s390_skeys
+Returns: 0 on success, KVM_S390_GET_KEYS_NONE if guest is not using storage
+ keys, negative value on error
+
+This ioctl is used to get guest storage key values on the s390
+architecture. The ioctl takes parameters via the kvm_s390_skeys struct.
+
+struct kvm_s390_skeys {
+ __u64 start_gfn;
+ __u64 count;
+ __u64 skeydata_addr;
+ __u32 flags;
+ __u32 reserved[9];
+};
+
+The start_gfn field is the number of the first guest frame whose storage keys
+you want to get.
+
+The count field is the number of consecutive frames (starting from start_gfn)
+whose storage keys to get. The count field must be at least 1 and the maximum
+allowed value is defined as KVM_S390_SKEYS_ALLOC_MAX. Values outside this range
+will cause the ioctl to return -EINVAL.
+
+The skeydata_addr field is the address to a buffer large enough to hold count
+bytes. This buffer will be filled with storage key data by the ioctl.
+
+4.91 KVM_S390_SET_SKEYS
+
+Capability: KVM_CAP_S390_SKEYS
+Architectures: s390
+Type: vm ioctl
+Parameters: struct kvm_s390_skeys
+Returns: 0 on success, negative value on error
+
+This ioctl is used to set guest storage key values on the s390
+architecture. The ioctl takes parameters via the kvm_s390_skeys struct.
+See section on KVM_S390_GET_SKEYS for struct definition.
+
+The start_gfn field is the number of the first guest frame whose storage keys
+you want to set.
+
+The count field is the number of consecutive frames (starting from start_gfn)
+whose storage keys to get. The count field must be at least 1 and the maximum
+allowed value is defined as KVM_S390_SKEYS_ALLOC_MAX. Values outside this range
+will cause the ioctl to return -EINVAL.
+
+The skeydata_addr field is the address to a buffer containing count bytes of
+storage keys. Each byte in the buffer will be set as the storage key for a
+single frame starting at start_gfn for count frames.
+
+Note: If any architecturally invalid key value is found in the given data then
+the ioctl will return -EINVAL.
+
5. The kvm_run structure
------------------------
@@ -3258,3 +3362,31 @@ Returns: 0 on success, negative value on error
Allows use of the vector registers introduced with z13 processor, and
provides for the synchronization between host and user space. Will
return -EINVAL if the machine does not support vectors.
+
+7.4 KVM_CAP_S390_USER_STSI
+
+Architectures: s390
+Parameters: none
+
+This capability allows post-handlers for the STSI instruction. After
+initial handling in the kernel, KVM exits to user space with
+KVM_EXIT_S390_STSI to allow user space to insert further data.
+
+Before exiting to userspace, kvm handlers should fill in s390_stsi field of
+vcpu->run:
+struct {
+ __u64 addr;
+ __u8 ar;
+ __u8 reserved;
+ __u8 fc;
+ __u8 sel1;
+ __u16 sel2;
+} s390_stsi;
+
+@addr - guest address of STSI SYSIB
+@fc - function code
+@sel1 - selector 1
+@sel2 - selector 2
+@ar - access register number
+
+KVM handlers should exit to userspace with rc = -EREMOTE.
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 347a3333d618..b8d1e97fb201 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -562,9 +562,9 @@ struct kvm_arch{
int css_support;
int use_irqchip;
int use_cmma;
- int use_vectors;
int user_cpu_state_ctrl;
int user_sigp;
+ int user_stsi;
struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
wait_queue_head_t ipte_wq;
int ipte_lock_count;
diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c
index 9254afff250c..89140ddb998c 100644
--- a/arch/s390/kvm/diag.c
+++ b/arch/s390/kvm/diag.c
@@ -77,7 +77,7 @@ static int __diag_page_ref_service(struct kvm_vcpu *vcpu)
if (vcpu->run->s.regs.gprs[rx] & 7)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- rc = read_guest(vcpu, vcpu->run->s.regs.gprs[rx], &parm, sizeof(parm));
+ rc = read_guest(vcpu, vcpu->run->s.regs.gprs[rx], rx, &parm, sizeof(parm));
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
if (parm.parm_version != 2 || parm.parm_len < 5 || parm.code != 0x258)
@@ -230,7 +230,7 @@ static int __diag_virtio_hypercall(struct kvm_vcpu *vcpu)
int kvm_s390_handle_diag(struct kvm_vcpu *vcpu)
{
- int code = kvm_s390_get_base_disp_rs(vcpu) & 0xffff;
+ int code = kvm_s390_get_base_disp_rs(vcpu, NULL) & 0xffff;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
diff --git a/arch/s390/kvm/gaccess.c b/arch/s390/kvm/gaccess.c
index 633fe9bd75a9..a7559f7207df 100644
--- a/arch/s390/kvm/gaccess.c
+++ b/arch/s390/kvm/gaccess.c
@@ -10,6 +10,7 @@
#include <asm/pgtable.h>
#include "kvm-s390.h"
#include "gaccess.h"
+#include <asm/switch_to.h>
union asce {
unsigned long val;
@@ -207,6 +208,54 @@ union raddress {
unsigned long pfra : 52; /* Page-Frame Real Address */
};
+union alet {
+ u32 val;
+ struct {
+ u32 reserved : 7;
+ u32 p : 1;
+ u32 alesn : 8;
+ u32 alen : 16;
+ };
+};
+
+union ald {
+ u32 val;
+ struct {
+ u32 : 1;
+ u32 alo : 24;
+ u32 all : 7;
+ };
+};
+
+struct ale {
+ unsigned long i : 1; /* ALEN-Invalid Bit */
+ unsigned long : 5;
+ unsigned long fo : 1; /* Fetch-Only Bit */
+ unsigned long p : 1; /* Private Bit */
+ unsigned long alesn : 8; /* Access-List-Entry Sequence Number */
+ unsigned long aleax : 16; /* Access-List-Entry Authorization Index */
+ unsigned long : 32;
+ unsigned long : 1;
+ unsigned long asteo : 25; /* ASN-Second-Table-Entry Origin */
+ unsigned long : 6;
+ unsigned long astesn : 32; /* ASTE Sequence Number */
+} __packed;
+
+struct aste {
+ unsigned long i : 1; /* ASX-Invalid Bit */
+ unsigned long ato : 29; /* Authority-Table Origin */
+ unsigned long : 1;
+ unsigned long b : 1; /* Base-Space Bit */
+ unsigned long ax : 16; /* Authorization Index */
+ unsigned long atl : 12; /* Authority-Table Length */
+ unsigned long : 2;
+ unsigned long ca : 1; /* Controlled-ASN Bit */
+ unsigned long ra : 1; /* Reusable-ASN Bit */
+ unsigned long asce : 64; /* Address-Space-Control Element */
+ unsigned long ald : 32;
+ unsigned long astesn : 32;
+ /* .. more fields there */
+} __packed;
int ipte_lock_held(struct kvm_vcpu *vcpu)
{
@@ -307,15 +356,157 @@ void ipte_unlock(struct kvm_vcpu *vcpu)
ipte_unlock_simple(vcpu);
}
-static unsigned long get_vcpu_asce(struct kvm_vcpu *vcpu)
+static int ar_translation(struct kvm_vcpu *vcpu, union asce *asce, ar_t ar,
+ int write)
+{
+ union alet alet;
+ struct ale ale;
+ struct aste aste;
+ unsigned long ald_addr, authority_table_addr;
+ union ald ald;
+ int eax, rc;
+ u8 authority_table;
+
+ if (ar >= NUM_ACRS)
+ return -EINVAL;
+
+ save_access_regs(vcpu->run->s.regs.acrs);
+ alet.val = vcpu->run->s.regs.acrs[ar];
+
+ if (ar == 0 || alet.val == 0) {
+ asce->val = vcpu->arch.sie_block->gcr[1];
+ return 0;
+ } else if (alet.val == 1) {
+ asce->val = vcpu->arch.sie_block->gcr[7];
+ return 0;
+ }
+
+ if (alet.reserved)
+ return PGM_ALET_SPECIFICATION;
+
+ if (alet.p)
+ ald_addr = vcpu->arch.sie_block->gcr[5];
+ else
+ ald_addr = vcpu->arch.sie_block->gcr[2];
+ ald_addr &= 0x7fffffc0;
+
+ rc = read_guest_real(vcpu, ald_addr + 16, &ald.val, sizeof(union ald));
+ if (rc)
+ return rc;
+
+ if (alet.alen / 8 > ald.all)
+ return PGM_ALEN_TRANSLATION;
+
+ if (0x7fffffff - ald.alo * 128 < alet.alen * 16)
+ return PGM_ADDRESSING;
+
+ rc = read_guest_real(vcpu, ald.alo * 128 + alet.alen * 16, &ale,
+ sizeof(struct ale));
+ if (rc)
+ return rc;
+
+ if (ale.i == 1)
+ return PGM_ALEN_TRANSLATION;
+ if (ale.alesn != alet.alesn)
+ return PGM_ALE_SEQUENCE;
+
+ rc = read_guest_real(vcpu, ale.asteo * 64, &aste, sizeof(struct aste));
+ if (rc)
+ return rc;
+
+ if (aste.i)
+ return PGM_ASTE_VALIDITY;
+ if (aste.astesn != ale.astesn)
+ return PGM_ASTE_SEQUENCE;
+
+ if (ale.p == 1) {
+ eax = (vcpu->arch.sie_block->gcr[8] >> 16) & 0xffff;
+ if (ale.aleax != eax) {
+ if (eax / 16 > aste.atl)
+ return PGM_EXTENDED_AUTHORITY;
+
+ authority_table_addr = aste.ato * 4 + eax / 4;
+
+ rc = read_guest_real(vcpu, authority_table_addr,
+ &authority_table,
+ sizeof(u8));
+ if (rc)
+ return rc;
+
+ if ((authority_table & (0x40 >> ((eax & 3) * 2))) == 0)
+ return PGM_EXTENDED_AUTHORITY;
+ }
+ }
+
+ if (ale.fo == 1 && write)
+ return PGM_PROTECTION;
+
+ asce->val = aste.asce;
+ return 0;
+}
+
+struct trans_exc_code_bits {
+ unsigned long addr : 52; /* Translation-exception Address */
+ unsigned long fsi : 2; /* Access Exception Fetch/Store Indication */
+ unsigned long : 6;
+ unsigned long b60 : 1;
+ unsigned long b61 : 1;
+ unsigned long as : 2; /* ASCE Identifier */
+};
+
+enum {
+ FSI_UNKNOWN = 0, /* Unknown wether fetch or store */
+ FSI_STORE = 1, /* Exception was due to store operation */
+ FSI_FETCH = 2 /* Exception was due to fetch operation */
+};
+
+static int get_vcpu_asce(struct kvm_vcpu *vcpu, union asce *asce,
+ ar_t ar, int write)
{
+ int rc;
+ psw_t *psw = &vcpu->arch.sie_block->gpsw;
+ struct kvm_s390_pgm_info *pgm = &vcpu->arch.pgm;
+ struct trans_exc_code_bits *tec_bits;
+
+ memset(pgm, 0, sizeof(*pgm));
+ tec_bits = (struct trans_exc_code_bits *)&pgm->trans_exc_code;
+ tec_bits->fsi = write ? FSI_STORE : FSI_FETCH;
+ tec_bits->as = psw_bits(*psw).as;
+
+ if (!psw_bits(*psw).t) {
+ asce->val = 0;
+ asce->r = 1;
+ return 0;
+ }
+
switch (psw_bits(vcpu->arch.sie_block->gpsw).as) {
case PSW_AS_PRIMARY:
- return vcpu->arch.sie_block->gcr[1];
+ asce->val = vcpu->arch.sie_block->gcr[1];
+ return 0;
case PSW_AS_SECONDARY:
- return vcpu->arch.sie_block->gcr[7];
+ asce->val = vcpu->arch.sie_block->gcr[7];
+ return 0;
case PSW_AS_HOME:
- return vcpu->arch.sie_block->gcr[13];
+ asce->val = vcpu->arch.sie_block->gcr[13];
+ return 0;
+ case PSW_AS_ACCREG:
+ rc = ar_translation(vcpu, asce, ar, write);
+ switch (rc) {
+ case PGM_ALEN_TRANSLATION:
+ case PGM_ALE_SEQUENCE:
+ case PGM_ASTE_VALIDITY:
+ case PGM_ASTE_SEQUENCE:
+ case PGM_EXTENDED_AUTHORITY:
+ vcpu->arch.pgm.exc_access_id = ar;
+ break;
+ case PGM_PROTECTION:
+ tec_bits->b60 = 1;
+ tec_bits->b61 = 1;
+ break;
+ }
+ if (rc > 0)
+ pgm->code = rc;
+ return rc;
}
return 0;
}
@@ -330,6 +521,7 @@ static int deref_table(struct kvm *kvm, unsigned long gpa, unsigned long *val)
* @vcpu: virtual cpu
* @gva: guest virtual address
* @gpa: points to where guest physical (absolute) address should be stored
+ * @asce: effective asce
* @write: indicates if access is a write access
*
* Translate a guest virtual address into a guest absolute address by means
@@ -345,7 +537,8 @@ static int deref_table(struct kvm *kvm, unsigned long gpa, unsigned long *val)
* by the architecture
*/
static unsigned long guest_translate(struct kvm_vcpu *vcpu, unsigned long gva,
- unsigned long *gpa, int write)
+ unsigned long *gpa, const union asce asce,
+ int write)
{
union vaddress vaddr = {.addr = gva};
union raddress raddr = {.addr = gva};
@@ -354,12 +547,10 @@ static unsigned long guest_translate(struct kvm_vcpu *vcpu, unsigned long gva,
union ctlreg0 ctlreg0;
unsigned long ptr;
int edat1, edat2;
- union asce asce;
ctlreg0.val = vcpu->arch.sie_block->gcr[0];
edat1 = ctlreg0.edat && test_kvm_facility(vcpu->kvm, 8);
edat2 = edat1 && test_kvm_facility(vcpu->kvm, 78);
- asce.val = get_vcpu_asce(vcpu);
if (asce.r)
goto real_address;
ptr = asce.origin * 4096;
@@ -506,48 +697,30 @@ static inline int is_low_address(unsigned long ga)
return (ga & ~0x11fful) == 0;
}
-static int low_address_protection_enabled(struct kvm_vcpu *vcpu)
+static int low_address_protection_enabled(struct kvm_vcpu *vcpu,
+ const union asce asce)
{
union ctlreg0 ctlreg0 = {.val = vcpu->arch.sie_block->gcr[0]};
psw_t *psw = &vcpu->arch.sie_block->gpsw;
- union asce asce;
if (!ctlreg0.lap)
return 0;
- asce.val = get_vcpu_asce(vcpu);
if (psw_bits(*psw).t && asce.p)
return 0;
return 1;
}
-struct trans_exc_code_bits {
- unsigned long addr : 52; /* Translation-exception Address */
- unsigned long fsi : 2; /* Access Exception Fetch/Store Indication */
- unsigned long : 7;
- unsigned long b61 : 1;
- unsigned long as : 2; /* ASCE Identifier */
-};
-
-enum {
- FSI_UNKNOWN = 0, /* Unknown wether fetch or store */
- FSI_STORE = 1, /* Exception was due to store operation */
- FSI_FETCH = 2 /* Exception was due to fetch operation */
-};
-
static int guest_page_range(struct kvm_vcpu *vcpu, unsigned long ga,
unsigned long *pages, unsigned long nr_pages,
- int write)
+ const union asce asce, int write)
{
struct kvm_s390_pgm_info *pgm = &vcpu->arch.pgm;
psw_t *psw = &vcpu->arch.sie_block->gpsw;
struct trans_exc_code_bits *tec_bits;
int lap_enabled, rc;
- memset(pgm, 0, sizeof(*pgm));
tec_bits = (struct trans_exc_code_bits *)&pgm->trans_exc_code;
- tec_bits->fsi = write ? FSI_STORE : FSI_FETCH;
- tec_bits->as = psw_bits(*psw).as;
- lap_enabled = low_address_protection_enabled(vcpu);
+ lap_enabled = low_address_protection_enabled(vcpu, asce);
while (nr_pages) {
ga = kvm_s390_logical_to_effective(vcpu, ga);
tec_bits->addr = ga >> PAGE_SHIFT;
@@ -557,7 +730,7 @@ static int guest_page_range(struct kvm_vcpu *vcpu, unsigned long ga,
}
ga &= PAGE_MASK;
if (psw_bits(*psw).t) {
- rc = guest_translate(vcpu, ga, pages, write);
+ rc = guest_translate(vcpu, ga, pages, asce, write);
if (rc < 0)
return rc;
if (rc == PGM_PROTECTION)
@@ -578,7 +751,7 @@ static int guest_page_range(struct kvm_vcpu *vcpu, unsigned long ga,
return 0;
}
-int access_guest(struct kvm_vcpu *vcpu, unsigned long ga, void *data,
+int access_guest(struct kvm_vcpu *vcpu, unsigned long ga, ar_t ar, void *data,
unsigned long len, int write)
{
psw_t *psw = &vcpu->arch.sie_block->gpsw;
@@ -591,20 +764,19 @@ int access_guest(struct kvm_vcpu *vcpu, unsigned long ga, void *data,
if (!len)
return 0;
- /* Access register mode is not supported yet. */
- if (psw_bits(*psw).t && psw_bits(*psw).as == PSW_AS_ACCREG)
- return -EOPNOTSUPP;
+ rc = get_vcpu_asce(vcpu, &asce, ar, write);
+ if (rc)
+ return rc;
nr_pages = (((ga & ~PAGE_MASK) + len - 1) >> PAGE_SHIFT) + 1;
pages = pages_array;
if (nr_pages > ARRAY_SIZE(pages_array))
pages = vmalloc(nr_pages * sizeof(unsigned long));
if (!pages)
return -ENOMEM;
- asce.val = get_vcpu_asce(vcpu);
need_ipte_lock = psw_bits(*psw).t && !asce.r;
if (need_ipte_lock)
ipte_lock(vcpu);
- rc = guest_page_range(vcpu, ga, pages, nr_pages, write);
+ rc = guest_page_range(vcpu, ga, pages, nr_pages, asce, write);
for (idx = 0; idx < nr_pages && !rc; idx++) {
gpa = *(pages + idx) + (ga & ~PAGE_MASK);
_len = min(PAGE_SIZE - (gpa & ~PAGE_MASK), len);
@@ -652,7 +824,7 @@ int access_guest_real(struct kvm_vcpu *vcpu, unsigned long gra,
* Note: The IPTE lock is not taken during this function, so the caller
* has to take care of this.
*/
-int guest_translate_address(struct kvm_vcpu *vcpu, unsigned long gva,
+int guest_translate_address(struct kvm_vcpu *vcpu, unsigned long gva, ar_t ar,
unsigned long *gpa, int write)
{
struct kvm_s390_pgm_info *pgm = &vcpu->arch.pgm;
@@ -661,26 +833,21 @@ int guest_translate_address(struct kvm_vcpu *vcpu, unsigned long gva,
union asce asce;
int rc;
- /* Access register mode is not supported yet. */
- if (psw_bits(*psw).t && psw_bits(*psw).as == PSW_AS_ACCREG)
- return -EOPNOTSUPP;
-
gva = kvm_s390_logical_to_effective(vcpu, gva);
- memset(pgm, 0, sizeof(*pgm));
tec = (struct trans_exc_code_bits *)&pgm->trans_exc_code;
- tec->as = psw_bits(*psw).as;
- tec->fsi = write ? FSI_STORE : FSI_FETCH;
+ rc = get_vcpu_asce(vcpu, &asce, ar, write);
tec->addr = gva >> PAGE_SHIFT;
- if (is_low_address(gva) && low_address_protection_enabled(vcpu)) {
+ if (rc)
+ return rc;
+ if (is_low_address(gva) && low_address_protection_enabled(vcpu, asce)) {
if (write) {
rc = pgm->code = PGM_PROTECTION;
return rc;
}
}
- asce.val = get_vcpu_asce(vcpu);
if (psw_bits(*psw).t && !asce.r) { /* Use DAT? */
- rc = guest_translate(vcpu, gva, gpa, write);
+ rc = guest_translate(vcpu, gva, gpa, asce, write);
if (rc > 0) {
if (rc == PGM_PROTECTION)
tec->b61 = 1;
@@ -697,28 +864,51 @@ int guest_translate_address(struct kvm_vcpu *vcpu, unsigned long gva,
}
/**
- * kvm_s390_check_low_addr_protection - check for low-address protection
- * @ga: Guest address
+ * check_gva_range - test a range of guest virtual addresses for accessibility
+ */
+int check_gva_range(struct kvm_vcpu *vcpu, unsigned long gva, ar_t ar,
+ unsigned long length, int is_write)
+{
+ unsigned long gpa;
+ unsigned long currlen;
+ int rc = 0;
+
+ ipte_lock(vcpu);
+ while (length > 0 && !rc) {
+ currlen = min(length, PAGE_SIZE - (gva % PAGE_SIZE));
+ rc = guest_translate_address(vcpu, gva, ar, &gpa, is_write);
+ gva += currlen;
+ length -= currlen;
+ }
+ ipte_unlock(vcpu);
+
+ return rc;
+}
+
+/**
+ * kvm_s390_check_low_addr_prot_real - check for low-address protection
+ * @gra: Guest real address
*
* Checks whether an address is subject to low-address protection and set
* up vcpu->arch.pgm accordingly if necessary.
*
* Return: 0 if no protection exception, or PGM_PROTECTION if protected.
*/
-int kvm_s390_check_low_addr_protection(struct kvm_vcpu *vcpu, unsigned long ga)
+int kvm_s390_check_low_addr_prot_real(struct kvm_vcpu *vcpu, unsigned long gra)
{
struct kvm_s390_pgm_info *pgm = &vcpu->arch.pgm;
psw_t *psw = &vcpu->arch.sie_block->gpsw;
struct trans_exc_code_bits *tec_bits;
+ union ctlreg0 ctlreg0 = {.val = vcpu->arch.sie_block->gcr[0]};
- if (!is_low_address(ga) || !low_address_protection_enabled(vcpu))
+ if (!ctlreg0.lap || !is_low_address(gra))
return 0;
memset(pgm, 0, sizeof(*pgm));
tec_bits = (struct trans_exc_code_bits *)&pgm->trans_exc_code;
tec_bits->fsi = FSI_STORE;
tec_bits->as = psw_bits(*psw).as;
- tec_bits->addr = ga >> PAGE_SHIFT;
+ tec_bits->addr = gra >> PAGE_SHIFT;
pgm->code = PGM_PROTECTION;
return pgm->code;
diff --git a/arch/s390/kvm/gaccess.h b/arch/s390/kvm/gaccess.h
index 0149cf15058a..ef03726cc661 100644
--- a/arch/s390/kvm/gaccess.h
+++ b/arch/s390/kvm/gaccess.h
@@ -156,9 +156,11 @@ int read_guest_lc(struct kvm_vcpu *vcpu, unsigned long gra, void *data,
}
int guest_translate_address(struct kvm_vcpu *vcpu, unsigned long gva,
- unsigned long *gpa, int write);
+ ar_t ar, unsigned long *gpa, int write);
+int check_gva_range(struct kvm_vcpu *vcpu, unsigned long gva, ar_t ar,
+ unsigned long length, int is_write);
-int access_guest(struct kvm_vcpu *vcpu, unsigned long ga, void *data,
+int access_guest(struct kvm_vcpu *vcpu, unsigned long ga, ar_t ar, void *data,
unsigned long len, int write);
int access_guest_real(struct kvm_vcpu *vcpu, unsigned long gra,
@@ -168,6 +170,7 @@ int access_guest_real(struct kvm_vcpu *vcpu, unsigned long gra,
* write_guest - copy data from kernel space to guest space
* @vcpu: virtual cpu
* @ga: guest address
+ * @ar: access register
* @data: source address in kernel space
* @len: number of bytes to copy
*
@@ -176,8 +179,7 @@ int access_guest_real(struct kvm_vcpu *vcpu, unsigned long gra,
* If DAT is off data will be copied to guest real or absolute memory.
* If DAT is on data will be copied to the address space as specified by
* the address space bits of the PSW:
- * Primary, secondory or home space (access register mode is currently not
- * implemented).
+ * Primary, secondary, home space or access register mode.
* The addressing mode of the PSW is also inspected, so that address wrap
* around is taken into account for 24-, 31- and 64-bit addressing mode,
* if the to be copied data crosses page boundaries in guest address space.
@@ -210,16 +212,17 @@ int access_guest_real(struct kvm_vcpu *vcpu, unsigned long gra,
* if data has been changed in guest space in case of an exception.
*/
static inline __must_check
-int write_guest(struct kvm_vcpu *vcpu, unsigned long ga, void *data,
+int write_guest(struct kvm_vcpu *vcpu, unsigned long ga, ar_t ar, void *data,
unsigned long len)
{
- return access_guest(vcpu, ga, data, len, 1);
+ return access_guest(vcpu, ga, ar, data, len, 1);
}
/**
* read_guest - copy data from guest space to kernel space
* @vcpu: virtual cpu
* @ga: guest address
+ * @ar: access register
* @data: destination address in kernel space
* @len: number of bytes to copy
*
@@ -229,10 +232,10 @@ int write_guest(struct kvm_vcpu *vcpu, unsigned long ga, void *data,
* data will be copied from guest space to kernel space.
*/
static inline __must_check
-int read_guest(struct kvm_vcpu *vcpu, unsigned long ga, void *data,
+int read_guest(struct kvm_vcpu *vcpu, unsigned long ga, ar_t ar, void *data,
unsigned long len)
{
- return access_guest(vcpu, ga, data, len, 0);
+ return access_guest(vcpu, ga, ar, data, len, 0);
}
/**
@@ -330,6 +333,6 @@ int read_guest_real(struct kvm_vcpu *vcpu, unsigned long gra, void *data,
void ipte_lock(struct kvm_vcpu *vcpu);
void ipte_unlock(struct kvm_vcpu *vcpu);
int ipte_lock_held(struct kvm_vcpu *vcpu);
-int kvm_s390_check_low_addr_protection(struct kvm_vcpu *vcpu, unsigned long ga);
+int kvm_s390_check_low_addr_prot_real(struct kvm_vcpu *vcpu, unsigned long gra);
#endif /* __KVM_S390_GACCESS_H */
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index 08ae10a3b406..9e3779e3e496 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -320,7 +320,7 @@ static int handle_mvpg_pei(struct kvm_vcpu *vcpu)
/* Make sure that the source is paged-in */
rc = guest_translate_address(vcpu, vcpu->run->s.regs.gprs[reg2],
- &srcaddr, 0);
+ reg2, &srcaddr, 0);
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
rc = kvm_arch_fault_in_page(vcpu, srcaddr, 0);
@@ -329,7 +329,7 @@ static int handle_mvpg_pei(struct kvm_vcpu *vcpu)
/* Make sure that the destination is paged-in */
rc = guest_translate_address(vcpu, vcpu->run->s.regs.gprs[reg1],
- &dstaddr, 1);
+ reg1, &dstaddr, 1);
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
rc = kvm_arch_fault_in_page(vcpu, dstaddr, 1);
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 02e03c862a60..9072127bd51b 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -25,6 +25,7 @@
#include <linux/random.h>
#include <linux/slab.h>
#include <linux/timer.h>
+#include <linux/vmalloc.h>
#include <asm/asm-offsets.h>
#include <asm/lowcore.h>
#include <asm/pgtable.h>
@@ -38,6 +39,8 @@
#include "trace.h"
#include "trace-s390.h"
+#define MEM_OP_MAX_SIZE 65536 /* Maximum transfer size for KVM_S390_MEM_OP */
+
#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
struct kvm_stats_debugfs_item debugfs_entries[] = {
@@ -104,7 +107,6 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
unsigned long kvm_s390_fac_list_mask[] = {
0xff82fffbf4fc2000UL,
0x005c000000000000UL,
- 0x4000000000000000UL,
};
unsigned long kvm_s390_fac_list_mask_size(void)
@@ -175,8 +177,13 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_VM_ATTRIBUTES:
case KVM_CAP_MP_STATE:
case KVM_CAP_S390_USER_SIGP:
+ case KVM_CAP_S390_USER_STSI:
+ case KVM_CAP_S390_SKEYS:
r = 1;
break;
+ case KVM_CAP_S390_MEM_OP:
+ r = MEM_OP_MAX_SIZE;
+ break;
case KVM_CAP_NR_VCPUS:
case KVM_CAP_MAX_VCPUS:
r = KVM_MAX_VCPUS;
@@ -271,8 +278,16 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap)
r = 0;
break;
case KVM_CAP_S390_VECTOR_REGISTERS:
- kvm->arch.use_vectors = MACHINE_HAS_VX;
- r = MACHINE_HAS_VX ? 0 : -EINVAL;
+ if (MACHINE_HAS_VX) {
+ set_kvm_facility(kvm->arch.model.fac->mask, 129);
+ set_kvm_facility(kvm->arch.model.fac->list, 129);
+ r = 0;
+ } else
+ r = -EINVAL;
+ break;
+ case KVM_CAP_S390_USER_STSI:
+ kvm->arch.user_stsi = 1;
+ r = 0;
break;
default:
r = -EINVAL;
@@ -718,6 +733,108 @@ static int kvm_s390_vm_has_attr(struct kvm *kvm, struct kvm_device_attr *attr)
return ret;
}
+static long kvm_s390_get_skeys(struct kvm *kvm, struct kvm_s390_skeys *args)
+{
+ uint8_t *keys;
+ uint64_t hva;
+ unsigned long curkey;
+ int i, r = 0;
+
+ if (args->flags != 0)
+ return -EINVAL;
+
+ /* Is this guest using storage keys? */
+ if (!mm_use_skey(current->mm))
+ return KVM_S390_GET_SKEYS_NONE;
+
+ /* Enforce sane limit on memory allocation */
+ if (args->count < 1 || args->count > KVM_S390_SKEYS_MAX)
+ return -EINVAL;
+
+ keys = kmalloc_array(args->count, sizeof(uint8_t),
+ GFP_KERNEL | __GFP_NOWARN);
+ if (!keys)
+ keys = vmalloc(sizeof(uint8_t) * args->count);
+ if (!keys)
+ return -ENOMEM;
+
+ for (i = 0; i < args->count; i++) {
+ hva = gfn_to_hva(kvm, args->start_gfn + i);
+ if (kvm_is_error_hva(hva)) {
+ r = -EFAULT;
+ goto out;
+ }
+
+ curkey = get_guest_storage_key(current->mm, hva);
+ if (IS_ERR_VALUE(curkey)) {
+ r = curkey;
+ goto out;
+ }
+ keys[i] = curkey;
+ }
+
+ r = copy_to_user((uint8_t __user *)args->skeydata_addr, keys,
+ sizeof(uint8_t) * args->count);
+ if (r)
+ r = -EFAULT;
+out:
+ kvfree(keys);
+ return r;
+}
+
+static long kvm_s390_set_skeys(struct kvm *kvm, struct kvm_s390_skeys *args)
+{
+ uint8_t *keys;
+ uint64_t hva;
+ int i, r = 0;
+
+ if (args->flags != 0)
+ return -EINVAL;
+
+ /* Enforce sane limit on memory allocation */
+ if (args->count < 1 || args->count > KVM_S390_SKEYS_MAX)
+ return -EINVAL;
+
+ keys = kmalloc_array(args->count, sizeof(uint8_t),
+ GFP_KERNEL | __GFP_NOWARN);
+ if (!keys)
+ keys = vmalloc(sizeof(uint8_t) * args->count);
+ if (!keys)
+ return -ENOMEM;
+
+ r = copy_from_user(keys, (uint8_t __user *)args->skeydata_addr,
+ sizeof(uint8_t) * args->count);
+ if (r) {
+ r = -EFAULT;
+ goto out;
+ }
+
+ /* Enable storage key handling for the guest */
+ s390_enable_skey();
+
+ for (i = 0; i < args->count; i++) {
+ hva = gfn_to_hva(kvm, args->start_gfn + i);
+ if (kvm_is_error_hva(hva)) {
+ r = -EFAULT;
+ goto out;
+ }
+
+ /* Lowest order bit is reserved */
+ if (keys[i] & 0x01) {
+ r = -EINVAL;
+ goto out;
+ }
+
+ r = set_guest_storage_key(current->mm, hva,
+ (unsigned long)keys[i], 0);
+ if (r)
+ goto out;
+ }
+out:
+ kvfree(keys);
+ return r;
+}
+
long kvm_arch_vm_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg)
{
@@ -777,6 +894,26 @@ long kvm_arch_vm_ioctl(struct file *filp,
r = kvm_s390_vm_has_attr(kvm, &attr);
break;
}
+ case KVM_S390_GET_SKEYS: {
+ struct kvm_s390_skeys args;
+
+ r = -EFAULT;
+ if (copy_from_user(&args, argp,
+ sizeof(struct kvm_s390_skeys)))
+ break;
+ r = kvm_s390_get_skeys(kvm, &args);
+ break;
+ }
+ case KVM_S390_SET_SKEYS: {
+ struct kvm_s390_skeys args;
+
+ r = -EFAULT;
+ if (copy_from_user(&args, argp,
+ sizeof(struct kvm_s390_skeys)))
+ break;
+ r = kvm_s390_set_skeys(kvm, &args);
+ break;
+ }
default:
r = -ENOTTY;
}
@@ -897,7 +1034,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
kvm->arch.dbf = debug_register(debug_name, 8, 2, 8 * sizeof(long));
if (!kvm->arch.dbf)
- goto out_nodbf;
+ goto out_err;
/*
* The architectural maximum amount of facilities is 16 kbit. To store
@@ -909,7 +1046,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
kvm->arch.model.fac =
(struct kvm_s390_fac *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
if (!kvm->arch.model.fac)
- goto out_nofac;
+ goto out_err;
/* Populate the facility mask initially. */
memcpy(kvm->arch.model.fac->mask, S390_lowcore.stfle_fac_list,
@@ -929,7 +1066,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
kvm->arch.model.ibc = sclp_get_ibc() & 0x0fff;
if (kvm_s390_crypto_init(kvm) < 0)
- goto out_crypto;
+ goto out_err;
spin_lock_init(&kvm->arch.float_int.lock);
INIT_LIST_HEAD(&kvm->arch.float_int.list);
@@ -944,28 +1081,23 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
} else {
kvm->arch.gmap = gmap_alloc(current->mm, (1UL << 44) - 1);
if (!kvm->arch.gmap)
- goto out_nogmap;
+ goto out_err;
kvm->arch.gmap->private = kvm;
kvm->arch.gmap->pfault_enabled = 0;
}
kvm->arch.css_support = 0;
kvm->arch.use_irqchip = 0;
- kvm->arch.use_vectors = 0;
kvm->arch.epoch = 0;
spin_lock_init(&kvm->arch.start_stop_lock);
return 0;
-out_nogmap:
+out_err:
kfree(kvm->arch.crypto.crycb);
-out_crypto:
free_page((unsigned long)kvm->arch.model.fac);
-out_nofac:
debug_unregister(kvm->arch.dbf);
-out_nodbf:
free_page((unsigned long)(kvm->arch.sca));
-out_err:
return rc;
}
@@ -1057,12 +1189,12 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
{
save_fp_ctl(&vcpu->arch.host_fpregs.fpc);
- if (vcpu->kvm->arch.use_vectors)
+ if (test_kvm_facility(vcpu->kvm, 129))
save_vx_regs((__vector128 *)&vcpu->arch.host_vregs->vrs);
else
save_fp_regs(vcpu->arch.host_fpregs.fprs);
save_access_regs(vcpu->arch.host_acrs);
- if (vcpu->kvm->arch.use_vectors) {
+ if (test_kvm_facility(vcpu->kvm, 129)) {
restore_fp_ctl(&vcpu->run->s.regs.fpc);
restore_vx_regs((__vector128 *)&vcpu->run->s.regs.vrs);
} else {
@@ -1078,7 +1210,7 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
{
atomic_clear_mask(CPUSTAT_RUNNING, &vcpu->arch.sie_block->cpuflags);
gmap_disable(vcpu->arch.gmap);
- if (vcpu->kvm->arch.use_vectors) {
+ if (test_kvm_facility(vcpu->kvm, 129)) {
save_fp_ctl(&vcpu->run->s.regs.fpc);
save_vx_regs((__vector128 *)&vcpu->run->s.regs.vrs);
} else {
@@ -1087,7 +1219,7 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
}
save_access_regs(vcpu->run->s.regs.acrs);
restore_fp_ctl(&vcpu->arch.host_fpregs.fpc);
- if (vcpu->kvm->arch.use_vectors)
+ if (test_kvm_facility(vcpu->kvm, 129))
restore_vx_regs((__vector128 *)&vcpu->arch.host_vregs->vrs);
else
restore_fp_regs(vcpu->arch.host_fpregs.fprs);
@@ -1187,7 +1319,7 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
vcpu->arch.sie_block->eca |= 1;
if (sclp_has_sigpif())
vcpu->arch.sie_block->eca |= 0x10000000U;
- if (vcpu->kvm->arch.use_vectors) {
+ if (test_kvm_facility(vcpu->kvm, 129)) {
vcpu->arch.sie_block->eca |= 0x00020000;
vcpu->arch.sie_block->ecd |= 0x20000000;
}
@@ -1780,7 +1912,7 @@ static int vcpu_post_run_fault_in_sie(struct kvm_vcpu *vcpu)
* to look up the current opcode to get the length of the instruction
* to be able to forward the PSW.
*/
- rc = read_guest(vcpu, psw->addr, &opcode, 1);
+ rc = read_guest(vcpu, psw->addr, 0, &opcode, 1);
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
psw->addr = __rewind_psw(*psw, -insn_length(opcode));
@@ -2189,6 +2321,65 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
return r;
}
+static long kvm_s390_guest_mem_op(struct kvm_vcpu *vcpu,
+ struct kvm_s390_mem_op *mop)
+{
+ void __user *uaddr = (void __user *)mop->buf;
+ void *tmpbuf = NULL;
+ int r, srcu_idx;
+ const u64 supported_flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION
+ | KVM_S390_MEMOP_F_CHECK_ONLY;
+
+ if (mop->flags & ~supported_flags)
+ return -EINVAL;
+
+ if (mop->size > MEM_OP_MAX_SIZE)
+ return -E2BIG;
+
+ if (!(mop->flags & KVM_S390_MEMOP_F_CHECK_ONLY)) {
+ tmpbuf = vmalloc(mop->size);
+ if (!tmpbuf)
+ return -ENOMEM;
+ }
+
+ srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
+
+ switch (mop->op) {
+ case KVM_S390_MEMOP_LOGICAL_READ:
+ if (mop->flags & KVM_S390_MEMOP_F_CHECK_ONLY) {
+ r = check_gva_range(vcpu, mop->gaddr, mop->ar, mop->size, false);
+ break;
+ }
+ r = read_guest(vcpu, mop->gaddr, mop->ar, tmpbuf, mop->size);
+ if (r == 0) {
+ if (copy_to_user(uaddr, tmpbuf, mop->size))
+ r = -EFAULT;
+ }
+ break;
+ case KVM_S390_MEMOP_LOGICAL_WRITE:
+ if (mop->flags & KVM_S390_MEMOP_F_CHECK_ONLY) {
+ r = check_gva_range(vcpu, mop->gaddr, mop->ar, mop->size, true);
+ break;
+ }
+ if (copy_from_user(tmpbuf, uaddr, mop->size)) {
+ r = -EFAULT;
+ break;
+ }
+ r = write_guest(vcpu, mop->gaddr, mop->ar, tmpbuf, mop->size);
+ break;
+ default:
+ r = -EINVAL;
+ }
+
+ srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
+
+ if (r > 0 && (mop->flags & KVM_S390_MEMOP_F_INJECT_EXCEPTION) != 0)
+ kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm);
+
+ vfree(tmpbuf);
+ return r;
+}
+
long kvm_arch_vcpu_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg)
{
@@ -2288,6 +2479,15 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
break;
}
+ case KVM_S390_MEM_OP: {
+ struct kvm_s390_mem_op mem_op;
+
+ if (copy_from_user(&mem_op, argp, sizeof(mem_op)) == 0)
+ r = kvm_s390_guest_mem_op(vcpu, &mem_op);
+ else
+ r = -EFAULT;
+ break;
+ }
default:
r = -ENOTTY;
}
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index fda3f3146eb6..c5aefef158e5 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -70,16 +70,22 @@ static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
}
-static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu)
+typedef u8 __bitwise ar_t;
+
+static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, ar_t *ar)
{
u32 base2 = vcpu->arch.sie_block->ipb >> 28;
u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
+ if (ar)
+ *ar = base2;
+
return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
}
static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
- u64 *address1, u64 *address2)
+ u64 *address1, u64 *address2,
+ ar_t *ar_b1, ar_t *ar_b2)
{
u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
@@ -88,6 +94,11 @@ static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
*address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
*address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
+
+ if (ar_b1)
+ *ar_b1 = base1;
+ if (ar_b2)
+ *ar_b2 = base2;
}
static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
@@ -98,7 +109,7 @@ static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2
*r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
}
-static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)
+static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu, ar_t *ar)
{
u32 base2 = vcpu->arch.sie_block->ipb >> 28;
u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
@@ -107,14 +118,20 @@ static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)
if (disp2 & 0x80000)
disp2+=0xfff00000;
+ if (ar)
+ *ar = base2;
+
return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
}
-static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu)
+static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu, ar_t *ar)
{
u32 base2 = vcpu->arch.sie_block->ipb >> 28;
u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
+ if (ar)
+ *ar = base2;
+
return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
}
@@ -125,13 +142,24 @@ static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
vcpu->arch.sie_block->gpsw.mask |= cc << 44;
}
-/* test availability of facility in a kvm intance */
+/* test availability of facility in a kvm instance */
static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr)
{
return __test_facility(nr, kvm->arch.model.fac->mask) &&
__test_facility(nr, kvm->arch.model.fac->list);
}
+static inline int set_kvm_facility(u64 *fac_list, unsigned long nr)
+{
+ unsigned char *ptr;
+
+ if (nr >= MAX_FACILITY_BIT)
+ return -EINVAL;
+ ptr = (unsigned char *) fac_list + (nr >> 3);
+ *ptr |= (0x80UL >> (nr & 7));
+ return 0;
+}
+
/* are cpu states controlled by user space */
static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm)
{
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index b982fbca34df..5e4658d20c77 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -36,15 +36,16 @@ static int handle_set_clock(struct kvm_vcpu *vcpu)
struct kvm_vcpu *cpup;
s64 hostclk, val;
int i, rc;
+ ar_t ar;
u64 op2;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- op2 = kvm_s390_get_base_disp_s(vcpu);
+ op2 = kvm_s390_get_base_disp_s(vcpu, &ar);
if (op2 & 7) /* Operand must be on a doubleword boundary */
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- rc = read_guest(vcpu, op2, &val, sizeof(val));
+ rc = read_guest(vcpu, op2, ar, &val, sizeof(val));
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
@@ -68,20 +69,21 @@ static int handle_set_prefix(struct kvm_vcpu *vcpu)
u64 operand2;
u32 address;
int rc;
+ ar_t ar;
vcpu->stat.instruction_spx++;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- operand2 = kvm_s390_get_base_disp_s(vcpu);
+ operand2 = kvm_s390_get_base_disp_s(vcpu, &ar);
/* must be word boundary */
if (operand2 & 3)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
/* get the value */
- rc = read_guest(vcpu, operand2, &address, sizeof(address));
+ rc = read_guest(vcpu, operand2, ar, &address, sizeof(address));
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
@@ -107,13 +109,14 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu)
u64 operand2;
u32 address;
int rc;
+ ar_t ar;
vcpu->stat.instruction_stpx++;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- operand2 = kvm_s390_get_base_disp_s(vcpu);
+ operand2 = kvm_s390_get_base_disp_s(vcpu, &ar);
/* must be word boundary */
if (operand2 & 3)
@@ -122,7 +125,7 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu)
address = kvm_s390_get_prefix(vcpu);
/* get the value */
- rc = write_guest(vcpu, operand2, &address, sizeof(address));
+ rc = write_guest(vcpu, operand2, ar, &address, sizeof(address));
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
@@ -136,18 +139,19 @@ static int handle_store_cpu_address(struct kvm_vcpu *vcpu)
u16 vcpu_id = vcpu->vcpu_id;
u64 ga;
int rc;
+ ar_t ar;
vcpu->stat.instruction_stap++;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- ga = kvm_s390_get_base_disp_s(vcpu);
+ ga = kvm_s390_get_base_disp_s(vcpu, &ar);
if (ga & 1)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- rc = write_guest(vcpu, ga, &vcpu_id, sizeof(vcpu_id));
+ rc = write_guest(vcpu, ga, ar, &vcpu_id, sizeof(vcpu_id));
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
@@ -207,7 +211,7 @@ static int handle_test_block(struct kvm_vcpu *vcpu)
kvm_s390_get_regs_rre(vcpu, NULL, &reg2);
addr = vcpu->run->s.regs.gprs[reg2] & PAGE_MASK;
addr = kvm_s390_logical_to_effective(vcpu, addr);
- if (kvm_s390_check_low_addr_protection(vcpu, addr))
+ if (kvm_s390_check_low_addr_prot_real(vcpu, addr))
return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm);
addr = kvm_s390_real_to_abs(vcpu, addr);
@@ -231,8 +235,9 @@ static int handle_tpi(struct kvm_vcpu *vcpu)
u32 tpi_data[3];
int rc;
u64 addr;
+ ar_t ar;
- addr = kvm_s390_get_base_disp_s(vcpu);
+ addr = kvm_s390_get_base_disp_s(vcpu, &ar);
if (addr & 3)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@@ -251,7 +256,7 @@ static int handle_tpi(struct kvm_vcpu *vcpu)
* provided area.
*/
len = sizeof(tpi_data) - 4;
- rc = write_guest(vcpu, addr, &tpi_data, len);
+ rc = write_guest(vcpu, addr, ar, &tpi_data, len);
if (rc) {
rc = kvm_s390_inject_prog_cond(vcpu, rc);
goto reinject_interrupt;
@@ -395,15 +400,16 @@ int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu)
psw_compat_t new_psw;
u64 addr;
int rc;
+ ar_t ar;
if (gpsw->mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- addr = kvm_s390_get_base_disp_s(vcpu);
+ addr = kvm_s390_get_base_disp_s(vcpu, &ar);
if (addr & 7)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- rc = read_guest(vcpu, addr, &new_psw, sizeof(new_psw));
+ rc = read_guest(vcpu, addr, ar, &new_psw, sizeof(new_psw));
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
if (!(new_psw.mask & PSW32_MASK_BASE))
@@ -421,14 +427,15 @@ static int handle_lpswe(struct kvm_vcpu *vcpu)
psw_t new_psw;
u64 addr;
int rc;
+ ar_t ar;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- addr = kvm_s390_get_base_disp_s(vcpu);
+ addr = kvm_s390_get_base_disp_s(vcpu, &ar);
if (addr & 7)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- rc = read_guest(vcpu, addr, &new_psw, sizeof(new_psw));
+ rc = read_guest(vcpu, addr, ar, &new_psw, sizeof(new_psw));
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
vcpu->arch.sie_block->gpsw = new_psw;
@@ -442,18 +449,19 @@ static int handle_stidp(struct kvm_vcpu *vcpu)
u64 stidp_data = vcpu->arch.stidp_data;
u64 operand2;
int rc;
+ ar_t ar;
vcpu->stat.instruction_stidp++;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- operand2 = kvm_s390_get_base_disp_s(vcpu);
+ operand2 = kvm_s390_get_base_disp_s(vcpu, &ar);
if (operand2 & 7)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- rc = write_guest(vcpu, operand2, &stidp_data, sizeof(stidp_data));
+ rc = write_guest(vcpu, operand2, ar, &stidp_data, sizeof(stidp_data));
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
@@ -488,6 +496,17 @@ static void handle_stsi_3_2_2(struct kvm_vcpu *vcpu, struct sysinfo_3_2_2 *mem)
ASCEBC(mem->vm[0].cpi, 16);
}
+static void insert_stsi_usr_data(struct kvm_vcpu *vcpu, u64 addr, ar_t ar,
+ u8 fc, u8 sel1, u16 sel2)
+{
+ vcpu->run->exit_reason = KVM_EXIT_S390_STSI;
+ vcpu->run->s390_stsi.addr = addr;
+ vcpu->run->s390_stsi.ar = ar;
+ vcpu->run->s390_stsi.fc = fc;
+ vcpu->run->s390_stsi.sel1 = sel1;
+ vcpu->run->s390_stsi.sel2 = sel2;
+}
+
static int handle_stsi(struct kvm_vcpu *vcpu)
{
int fc = (vcpu->run->s.regs.gprs[0] & 0xf0000000) >> 28;
@@ -496,6 +515,7 @@ static int handle_stsi(struct kvm_vcpu *vcpu)
unsigned long mem = 0;
u64 operand2;
int rc = 0;
+ ar_t ar;
vcpu->stat.instruction_stsi++;
VCPU_EVENT(vcpu, 4, "stsi: fc: %x sel1: %x sel2: %x", fc, sel1, sel2);
@@ -518,7 +538,7 @@ static int handle_stsi(struct kvm_vcpu *vcpu)
return 0;
}
- operand2 = kvm_s390_get_base_disp_s(vcpu);
+ operand2 = kvm_s390_get_base_disp_s(vcpu, &ar);
if (operand2 & 0xfff)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@@ -542,16 +562,20 @@ static int handle_stsi(struct kvm_vcpu *vcpu)
break;
}
- rc = write_guest(vcpu, operand2, (void *)mem, PAGE_SIZE);
+ rc = write_guest(vcpu, operand2, ar, (void *)mem, PAGE_SIZE);
if (rc) {
rc = kvm_s390_inject_prog_cond(vcpu, rc);
goto out;
}
+ if (vcpu->kvm->arch.user_stsi) {
+ insert_stsi_usr_data(vcpu, operand2, ar, fc, sel1, sel2);
+ rc = -EREMOTE;
+ }
trace_kvm_s390_handle_stsi(vcpu, fc, sel1, sel2, operand2);
free_page(mem);
kvm_s390_set_psw_cc(vcpu, 0);
vcpu->run->s.regs.gprs[0] = 0;
- return 0;
+ return rc;
out_no_data:
kvm_s390_set_psw_cc(vcpu, 3);
out:
@@ -680,7 +704,7 @@ static int handle_pfmf(struct kvm_vcpu *vcpu)
}
if (vcpu->run->s.regs.gprs[reg1] & PFMF_CF) {
- if (kvm_s390_check_low_addr_protection(vcpu, start))
+ if (kvm_s390_check_low_addr_prot_real(vcpu, start))
return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm);
}
@@ -786,13 +810,14 @@ int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu)
int reg, rc, nr_regs;
u32 ctl_array[16];
u64 ga;
+ ar_t ar;
vcpu->stat.instruction_lctl++;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- ga = kvm_s390_get_base_disp_rs(vcpu);
+ ga = kvm_s390_get_base_disp_rs(vcpu, &ar);
if (ga & 3)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@@ -801,7 +826,7 @@ int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu)
trace_kvm_s390_handle_lctl(vcpu, 0, reg1, reg3, ga);
nr_regs = ((reg3 - reg1) & 0xf) + 1;
- rc = read_guest(vcpu, ga, ctl_array, nr_regs * sizeof(u32));
+ rc = read_guest(vcpu, ga, ar, ctl_array, nr_regs * sizeof(u32));
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
reg = reg1;
@@ -824,13 +849,14 @@ int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu)
int reg, rc, nr_regs;
u32 ctl_array[16];
u64 ga;
+ ar_t ar;
vcpu->stat.instruction_stctl++;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- ga = kvm_s390_get_base_disp_rs(vcpu);
+ ga = kvm_s390_get_base_disp_rs(vcpu, &ar);
if (ga & 3)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@@ -846,7 +872,7 @@ int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu)
break;
reg = (reg + 1) % 16;
} while (1);
- rc = write_guest(vcpu, ga, ctl_array, nr_regs * sizeof(u32));
+ rc = write_guest(vcpu, ga, ar, ctl_array, nr_regs * sizeof(u32));
return rc ? kvm_s390_inject_prog_cond(vcpu, rc) : 0;
}
@@ -857,13 +883,14 @@ static int handle_lctlg(struct kvm_vcpu *vcpu)
int reg, rc, nr_regs;
u64 ctl_array[16];
u64 ga;
+ ar_t ar;
vcpu->stat.instruction_lctlg++;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- ga = kvm_s390_get_base_disp_rsy(vcpu);
+ ga = kvm_s390_get_base_disp_rsy(vcpu, &ar);
if (ga & 7)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@@ -872,7 +899,7 @@ static int handle_lctlg(struct kvm_vcpu *vcpu)
trace_kvm_s390_handle_lctl(vcpu, 1, reg1, reg3, ga);
nr_regs = ((reg3 - reg1) & 0xf) + 1;
- rc = read_guest(vcpu, ga, ctl_array, nr_regs * sizeof(u64));
+ rc = read_guest(vcpu, ga, ar, ctl_array, nr_regs * sizeof(u64));
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
reg = reg1;
@@ -894,13 +921,14 @@ static int handle_stctg(struct kvm_vcpu *vcpu)
int reg, rc, nr_regs;
u64 ctl_array[16];
u64 ga;
+ ar_t ar;
vcpu->stat.instruction_stctg++;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- ga = kvm_s390_get_base_disp_rsy(vcpu);
+ ga = kvm_s390_get_base_disp_rsy(vcpu, &ar);
if (ga & 7)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@@ -916,7 +944,7 @@ static int handle_stctg(struct kvm_vcpu *vcpu)
break;
reg = (reg + 1) % 16;
} while (1);
- rc = write_guest(vcpu, ga, ctl_array, nr_regs * sizeof(u64));
+ rc = write_guest(vcpu, ga, ar, ctl_array, nr_regs * sizeof(u64));
return rc ? kvm_s390_inject_prog_cond(vcpu, rc) : 0;
}
@@ -941,13 +969,14 @@ static int handle_tprot(struct kvm_vcpu *vcpu)
unsigned long hva, gpa;
int ret = 0, cc = 0;
bool writable;
+ ar_t ar;
vcpu->stat.instruction_tprot++;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- kvm_s390_get_base_disp_sse(vcpu, &address1, &address2);
+ kvm_s390_get_base_disp_sse(vcpu, &address1, &address2, &ar, NULL);
/* we only handle the Linux memory detection case:
* access key == 0
@@ -956,11 +985,11 @@ static int handle_tprot(struct kvm_vcpu *vcpu)
return -EOPNOTSUPP;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_DAT)
ipte_lock(vcpu);
- ret = guest_translate_address(vcpu, address1, &gpa, 1);
+ ret = guest_translate_address(vcpu, address1, ar, &gpa, 1);
if (ret == PGM_PROTECTION) {
/* Write protected? Try again with read-only... */
cc = 1;
- ret = guest_translate_address(vcpu, address1, &gpa, 0);
+ ret = guest_translate_address(vcpu, address1, ar, &gpa, 0);
}
if (ret) {
if (ret == PGM_ADDRESSING || ret == PGM_TRANSLATION_SPEC) {
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index 755a7330d361..72e58bd2bee7 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -434,7 +434,7 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
- order_code = kvm_s390_get_base_disp_rs(vcpu);
+ order_code = kvm_s390_get_base_disp_rs(vcpu, NULL);
if (handle_sigp_order_in_user_space(vcpu, order_code))
return -EOPNOTSUPP;
@@ -476,7 +476,7 @@ int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu)
int r3 = vcpu->arch.sie_block->ipa & 0x000f;
u16 cpu_addr = vcpu->run->s.regs.gprs[r3];
struct kvm_vcpu *dest_vcpu;
- u8 order_code = kvm_s390_get_base_disp_rs(vcpu);
+ u8 order_code = kvm_s390_get_base_disp_rs(vcpu, NULL);
trace_kvm_s390_handle_sigp_pei(vcpu, order_code, cpu_addr);
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 82634a492fe0..1162ef7a3fa1 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -147,6 +147,16 @@ struct kvm_pit_config {
#define KVM_PIT_SPEAKER_DUMMY 1
+struct kvm_s390_skeys {
+ __u64 start_gfn;
+ __u64 count;
+ __u64 skeydata_addr;
+ __u32 flags;
+ __u32 reserved[9];
+};
+#define KVM_S390_GET_SKEYS_NONE 1
+#define KVM_S390_SKEYS_MAX 1048576
+
#define KVM_EXIT_UNKNOWN 0
#define KVM_EXIT_EXCEPTION 1
#define KVM_EXIT_IO 2
@@ -172,6 +182,7 @@ struct kvm_pit_config {
#define KVM_EXIT_S390_TSCH 22
#define KVM_EXIT_EPR 23
#define KVM_EXIT_SYSTEM_EVENT 24
+#define KVM_EXIT_S390_STSI 25
/* For KVM_EXIT_INTERNAL_ERROR */
/* Emulate instruction failed. */
@@ -309,6 +320,15 @@ struct kvm_run {
__u32 type;
__u64 flags;
} system_event;
+ /* KVM_EXIT_S390_STSI */
+ struct {
+ __u64 addr;
+ __u8 ar;
+ __u8 reserved;
+ __u8 fc;
+ __u8 sel1;
+ __u16 sel2;
+ } s390_stsi;
/* Fix the size of the union. */
char padding[256];
};
@@ -365,6 +385,24 @@ struct kvm_translation {
__u8 pad[5];
};
+/* for KVM_S390_MEM_OP */
+struct kvm_s390_mem_op {
+ /* in */
+ __u64 gaddr; /* the guest address */
+ __u64 flags; /* flags */
+ __u32 size; /* amount of bytes */
+ __u32 op; /* type of operation */
+ __u64 buf; /* buffer in userspace */
+ __u8 ar; /* the access register number */
+ __u8 reserved[31]; /* should be set to 0 */
+};
+/* types for kvm_s390_mem_op->op */
+#define KVM_S390_MEMOP_LOGICAL_READ 0
+#define KVM_S390_MEMOP_LOGICAL_WRITE 1
+/* flags for kvm_s390_mem_op->flags */
+#define KVM_S390_MEMOP_F_CHECK_ONLY (1ULL << 0)
+#define KVM_S390_MEMOP_F_INJECT_EXCEPTION (1ULL << 1)
+
/* for KVM_INTERRUPT */
struct kvm_interrupt {
/* in */
@@ -761,6 +799,9 @@ struct kvm_ppc_smmu_info {
#define KVM_CAP_CHECK_EXTENSION_VM 105
#define KVM_CAP_S390_USER_SIGP 106
#define KVM_CAP_S390_VECTOR_REGISTERS 107
+#define KVM_CAP_S390_MEM_OP 108
+#define KVM_CAP_S390_USER_STSI 109
+#define KVM_CAP_S390_SKEYS 110
#ifdef KVM_CAP_IRQ_ROUTING
@@ -1136,6 +1177,11 @@ struct kvm_s390_ucas_mapping {
#define KVM_ARM_VCPU_INIT _IOW(KVMIO, 0xae, struct kvm_vcpu_init)
#define KVM_ARM_PREFERRED_TARGET _IOR(KVMIO, 0xaf, struct kvm_vcpu_init)
#define KVM_GET_REG_LIST _IOWR(KVMIO, 0xb0, struct kvm_reg_list)
+/* Available with KVM_CAP_S390_MEM_OP */
+#define KVM_S390_MEM_OP _IOW(KVMIO, 0xb1, struct kvm_s390_mem_op)
+/* Available with KVM_CAP_S390_SKEYS */
+#define KVM_S390_GET_SKEYS _IOW(KVMIO, 0xb2, struct kvm_s390_skeys)
+#define KVM_S390_SET_SKEYS _IOW(KVMIO, 0xb3, struct kvm_s390_skeys)
#define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0)
#define KVM_DEV_ASSIGN_PCI_2_3 (1 << 1)
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-20 21:44:56 +0000