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-rw-r--r--arch/x86/kvm/Kconfig1
-rw-r--r--arch/x86/kvm/irq.c2
-rw-r--r--arch/x86/kvm/lapic.c52
-rw-r--r--arch/x86/kvm/vmx.c4
-rw-r--r--arch/x86/kvm/x86.c2
-rw-r--r--arch/x86/xen/enlighten.c13
-rw-r--r--arch/x86/xen/grant-table.c60
-rw-r--r--arch/x86/xen/p2m.c5
8 files changed, 64 insertions, 75 deletions
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 287e4c85fff9..f9d16ff56c6b 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -27,6 +27,7 @@ config KVM
select MMU_NOTIFIER
select ANON_INODES
select HAVE_KVM_IRQCHIP
+ select HAVE_KVM_IRQFD
select HAVE_KVM_IRQ_ROUTING
select HAVE_KVM_EVENTFD
select KVM_APIC_ARCHITECTURE
diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c
index bd0da433e6d7..a1ec6a50a05a 100644
--- a/arch/x86/kvm/irq.c
+++ b/arch/x86/kvm/irq.c
@@ -108,7 +108,7 @@ int kvm_cpu_get_interrupt(struct kvm_vcpu *v)
vector = kvm_cpu_get_extint(v);
- if (kvm_apic_vid_enabled(v->kvm) || vector != -1)
+ if (vector != -1)
return vector; /* PIC */
return kvm_get_apic_interrupt(v); /* APIC */
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 3855103f71fd..08e8a899e005 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -352,25 +352,46 @@ static inline int apic_find_highest_irr(struct kvm_lapic *apic)
static inline void apic_clear_irr(int vec, struct kvm_lapic *apic)
{
- apic->irr_pending = false;
+ struct kvm_vcpu *vcpu;
+
+ vcpu = apic->vcpu;
+
apic_clear_vector(vec, apic->regs + APIC_IRR);
- if (apic_search_irr(apic) != -1)
- apic->irr_pending = true;
+ if (unlikely(kvm_apic_vid_enabled(vcpu->kvm)))
+ /* try to update RVI */
+ kvm_make_request(KVM_REQ_EVENT, vcpu);
+ else {
+ vec = apic_search_irr(apic);
+ apic->irr_pending = (vec != -1);
+ }
}
static inline void apic_set_isr(int vec, struct kvm_lapic *apic)
{
- /* Note that we never get here with APIC virtualization enabled. */
+ struct kvm_vcpu *vcpu;
+
+ if (__apic_test_and_set_vector(vec, apic->regs + APIC_ISR))
+ return;
+
+ vcpu = apic->vcpu;
- if (!__apic_test_and_set_vector(vec, apic->regs + APIC_ISR))
- ++apic->isr_count;
- BUG_ON(apic->isr_count > MAX_APIC_VECTOR);
/*
- * ISR (in service register) bit is set when injecting an interrupt.
- * The highest vector is injected. Thus the latest bit set matches
- * the highest bit in ISR.
+ * With APIC virtualization enabled, all caching is disabled
+ * because the processor can modify ISR under the hood. Instead
+ * just set SVI.
*/
- apic->highest_isr_cache = vec;
+ if (unlikely(kvm_apic_vid_enabled(vcpu->kvm)))
+ kvm_x86_ops->hwapic_isr_update(vcpu->kvm, vec);
+ else {
+ ++apic->isr_count;
+ BUG_ON(apic->isr_count > MAX_APIC_VECTOR);
+ /*
+ * ISR (in service register) bit is set when injecting an interrupt.
+ * The highest vector is injected. Thus the latest bit set matches
+ * the highest bit in ISR.
+ */
+ apic->highest_isr_cache = vec;
+ }
}
static inline int apic_find_highest_isr(struct kvm_lapic *apic)
@@ -1627,11 +1648,16 @@ int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu)
int vector = kvm_apic_has_interrupt(vcpu);
struct kvm_lapic *apic = vcpu->arch.apic;
- /* Note that we never get here with APIC virtualization enabled. */
-
if (vector == -1)
return -1;
+ /*
+ * We get here even with APIC virtualization enabled, if doing
+ * nested virtualization and L1 runs with the "acknowledge interrupt
+ * on exit" mode. Then we cannot inject the interrupt via RVI,
+ * because the process would deliver it through the IDT.
+ */
+
apic_set_isr(vector, apic);
apic_update_ppr(apic);
apic_clear_irr(vector, apic);
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index e618f34bde2d..bfe11cf124a1 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -8754,6 +8754,8 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
prepare_vmcs12(vcpu, vmcs12, exit_reason, exit_intr_info,
exit_qualification);
+ vmx_load_vmcs01(vcpu);
+
if ((exit_reason == EXIT_REASON_EXTERNAL_INTERRUPT)
&& nested_exit_intr_ack_set(vcpu)) {
int irq = kvm_cpu_get_interrupt(vcpu);
@@ -8769,8 +8771,6 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
vmcs12->vm_exit_intr_error_code,
KVM_ISA_VMX);
- vmx_load_vmcs01(vcpu);
-
vm_entry_controls_init(vmx, vmcs_read32(VM_ENTRY_CONTROLS));
vm_exit_controls_init(vmx, vmcs_read32(VM_EXIT_CONTROLS));
vmx_segment_cache_clear(vmx);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index ca3d760dd581..8f1e22d3b286 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2636,7 +2636,7 @@ out:
return r;
}
-int kvm_dev_ioctl_check_extension(long ext)
+int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
{
int r;
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 94813515fdd6..c0cb11fb5008 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1828,8 +1828,19 @@ static void __init xen_hvm_guest_init(void)
xen_hvm_init_mmu_ops();
}
+static bool xen_nopv = false;
+static __init int xen_parse_nopv(char *arg)
+{
+ xen_nopv = true;
+ return 0;
+}
+early_param("xen_nopv", xen_parse_nopv);
+
static uint32_t __init xen_hvm_platform(void)
{
+ if (xen_nopv)
+ return 0;
+
if (xen_pv_domain())
return 0;
@@ -1838,6 +1849,8 @@ static uint32_t __init xen_hvm_platform(void)
bool xen_hvm_need_lapic(void)
{
+ if (xen_nopv)
+ return false;
if (xen_pv_domain())
return false;
if (!xen_hvm_domain())
diff --git a/arch/x86/xen/grant-table.c b/arch/x86/xen/grant-table.c
index ebfa9b2c871d..c0413046483a 100644
--- a/arch/x86/xen/grant-table.c
+++ b/arch/x86/xen/grant-table.c
@@ -49,7 +49,7 @@
static struct gnttab_vm_area {
struct vm_struct *area;
pte_t **ptes;
-} gnttab_shared_vm_area, gnttab_status_vm_area;
+} gnttab_shared_vm_area;
int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
unsigned long max_nr_gframes,
@@ -73,43 +73,16 @@ int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
return 0;
}
-int arch_gnttab_map_status(uint64_t *frames, unsigned long nr_gframes,
- unsigned long max_nr_gframes,
- grant_status_t **__shared)
-{
- grant_status_t *shared = *__shared;
- unsigned long addr;
- unsigned long i;
-
- if (shared == NULL)
- *__shared = shared = gnttab_status_vm_area.area->addr;
-
- addr = (unsigned long)shared;
-
- for (i = 0; i < nr_gframes; i++) {
- set_pte_at(&init_mm, addr, gnttab_status_vm_area.ptes[i],
- mfn_pte(frames[i], PAGE_KERNEL));
- addr += PAGE_SIZE;
- }
-
- return 0;
-}
-
void arch_gnttab_unmap(void *shared, unsigned long nr_gframes)
{
- pte_t **ptes;
unsigned long addr;
unsigned long i;
- if (shared == gnttab_status_vm_area.area->addr)
- ptes = gnttab_status_vm_area.ptes;
- else
- ptes = gnttab_shared_vm_area.ptes;
-
addr = (unsigned long)shared;
for (i = 0; i < nr_gframes; i++) {
- set_pte_at(&init_mm, addr, ptes[i], __pte(0));
+ set_pte_at(&init_mm, addr, gnttab_shared_vm_area.ptes[i],
+ __pte(0));
addr += PAGE_SIZE;
}
}
@@ -129,35 +102,12 @@ static int arch_gnttab_valloc(struct gnttab_vm_area *area, unsigned nr_frames)
return 0;
}
-static void arch_gnttab_vfree(struct gnttab_vm_area *area)
+int arch_gnttab_init(unsigned long nr_shared)
{
- free_vm_area(area->area);
- kfree(area->ptes);
-}
-
-int arch_gnttab_init(unsigned long nr_shared, unsigned long nr_status)
-{
- int ret;
-
if (!xen_pv_domain())
return 0;
- ret = arch_gnttab_valloc(&gnttab_shared_vm_area, nr_shared);
- if (ret < 0)
- return ret;
-
- /*
- * Always allocate the space for the status frames in case
- * we're migrated to a host with V2 support.
- */
- ret = arch_gnttab_valloc(&gnttab_status_vm_area, nr_status);
- if (ret < 0)
- goto err;
-
- return 0;
- err:
- arch_gnttab_vfree(&gnttab_shared_vm_area);
- return -ENOMEM;
+ return arch_gnttab_valloc(&gnttab_shared_vm_area, nr_shared);
}
#ifdef CONFIG_XEN_PVH
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 9bb3d82ffec8..3172692381ae 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -841,10 +841,9 @@ unsigned long __init set_phys_range_identity(unsigned long pfn_s,
pfn = ALIGN(pfn, P2M_PER_PAGE);
}
- if (!WARN((pfn - pfn_s) != (pfn_e - pfn_s),
+ WARN((pfn - pfn_s) != (pfn_e - pfn_s),
"Identity mapping failed. We are %ld short of 1-1 mappings!\n",
- (pfn_e - pfn_s) - (pfn - pfn_s)))
- printk(KERN_DEBUG "1-1 mapping on %lx->%lx\n", pfn_s, pfn);
+ (pfn_e - pfn_s) - (pfn - pfn_s));
return pfn - pfn_s;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-21 01:24:58 +0000