diff options
| -rw-r--r-- | Documentation/virtual/kvm/api.txt | 4 | ||||
| -rw-r--r-- | arch/mips/include/asm/kvm_host.h | 8 | ||||
| -rw-r--r-- | arch/mips/kvm/vz.c | 80 |
3 files changed, 92 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 45194363a160..b108238dc9dc 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -2081,7 +2081,11 @@ registers, find a list below: MIPS | KVM_REG_MIPS_CP0_SEGCTL0 | 64 MIPS | KVM_REG_MIPS_CP0_SEGCTL1 | 64 MIPS | KVM_REG_MIPS_CP0_SEGCTL2 | 64 + MIPS | KVM_REG_MIPS_CP0_PWBASE | 64 + MIPS | KVM_REG_MIPS_CP0_PWFIELD | 64 + MIPS | KVM_REG_MIPS_CP0_PWSIZE | 64 MIPS | KVM_REG_MIPS_CP0_WIRED | 32 + MIPS | KVM_REG_MIPS_CP0_PWCTL | 32 MIPS | KVM_REG_MIPS_CP0_HWRENA | 32 MIPS | KVM_REG_MIPS_CP0_BADVADDR | 64 MIPS | KVM_REG_MIPS_CP0_BADINSTR | 32 diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h index b2129c031df7..8d016ab3a8b9 100644 --- a/arch/mips/include/asm/kvm_host.h +++ b/arch/mips/include/asm/kvm_host.h @@ -42,7 +42,11 @@ #define KVM_REG_MIPS_CP0_SEGCTL0 MIPS_CP0_64(5, 2) #define KVM_REG_MIPS_CP0_SEGCTL1 MIPS_CP0_64(5, 3) #define KVM_REG_MIPS_CP0_SEGCTL2 MIPS_CP0_64(5, 4) +#define KVM_REG_MIPS_CP0_PWBASE MIPS_CP0_64(5, 5) +#define KVM_REG_MIPS_CP0_PWFIELD MIPS_CP0_64(5, 6) +#define KVM_REG_MIPS_CP0_PWSIZE MIPS_CP0_64(5, 7) #define KVM_REG_MIPS_CP0_WIRED MIPS_CP0_32(6, 0) +#define KVM_REG_MIPS_CP0_PWCTL MIPS_CP0_32(6, 6) #define KVM_REG_MIPS_CP0_HWRENA MIPS_CP0_32(7, 0) #define KVM_REG_MIPS_CP0_BADVADDR MIPS_CP0_64(8, 0) #define KVM_REG_MIPS_CP0_BADINSTR MIPS_CP0_32(8, 1) @@ -678,7 +682,11 @@ __BUILD_KVM_RW_HW(pagegrain, 32, MIPS_CP0_TLB_PG_MASK, 1) __BUILD_KVM_RW_HW(segctl0, l, MIPS_CP0_TLB_PG_MASK, 2) __BUILD_KVM_RW_HW(segctl1, l, MIPS_CP0_TLB_PG_MASK, 3) __BUILD_KVM_RW_HW(segctl2, l, MIPS_CP0_TLB_PG_MASK, 4) +__BUILD_KVM_RW_HW(pwbase, l, MIPS_CP0_TLB_PG_MASK, 5) +__BUILD_KVM_RW_HW(pwfield, l, MIPS_CP0_TLB_PG_MASK, 6) +__BUILD_KVM_RW_HW(pwsize, l, MIPS_CP0_TLB_PG_MASK, 7) __BUILD_KVM_RW_HW(wired, 32, MIPS_CP0_TLB_WIRED, 0) +__BUILD_KVM_RW_HW(pwctl, 32, MIPS_CP0_TLB_WIRED, 6) __BUILD_KVM_RW_HW(hwrena, 32, MIPS_CP0_HWRENA, 0) __BUILD_KVM_RW_HW(badvaddr, l, MIPS_CP0_BAD_VADDR, 0) __BUILD_KVM_RW_HW(badinstr, 32, MIPS_CP0_BAD_VADDR, 1) diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c index f32c1ab3f724..fb12c5b4a75c 100644 --- a/arch/mips/kvm/vz.c +++ b/arch/mips/kvm/vz.c @@ -1392,6 +1392,13 @@ static u64 kvm_vz_get_one_regs_segments[] = { KVM_REG_MIPS_CP0_SEGCTL2, }; +static u64 kvm_vz_get_one_regs_htw[] = { + KVM_REG_MIPS_CP0_PWBASE, + KVM_REG_MIPS_CP0_PWFIELD, + KVM_REG_MIPS_CP0_PWSIZE, + KVM_REG_MIPS_CP0_PWCTL, +}; + static u64 kvm_vz_get_one_regs_kscratch[] = { KVM_REG_MIPS_CP0_KSCRATCH1, KVM_REG_MIPS_CP0_KSCRATCH2, @@ -1416,6 +1423,8 @@ static unsigned long kvm_vz_num_regs(struct kvm_vcpu *vcpu) ret += ARRAY_SIZE(kvm_vz_get_one_regs_contextconfig); if (cpu_guest_has_segments) ret += ARRAY_SIZE(kvm_vz_get_one_regs_segments); + if (cpu_guest_has_htw) + ret += ARRAY_SIZE(kvm_vz_get_one_regs_htw); ret += __arch_hweight8(cpu_data[0].guest.kscratch_mask); return ret; @@ -1461,6 +1470,12 @@ static int kvm_vz_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices) return -EFAULT; indices += ARRAY_SIZE(kvm_vz_get_one_regs_segments); } + if (cpu_guest_has_htw) { + if (copy_to_user(indices, kvm_vz_get_one_regs_htw, + sizeof(kvm_vz_get_one_regs_htw))) + return -EFAULT; + indices += ARRAY_SIZE(kvm_vz_get_one_regs_htw); + } for (i = 0; i < 6; ++i) { if (!cpu_guest_has_kscr(i + 2)) continue; @@ -1564,9 +1579,29 @@ static int kvm_vz_get_one_reg(struct kvm_vcpu *vcpu, return -EINVAL; *v = read_gc0_segctl2(); break; + case KVM_REG_MIPS_CP0_PWBASE: + if (!cpu_guest_has_htw) + return -EINVAL; + *v = read_gc0_pwbase(); + break; + case KVM_REG_MIPS_CP0_PWFIELD: + if (!cpu_guest_has_htw) + return -EINVAL; + *v = read_gc0_pwfield(); + break; + case KVM_REG_MIPS_CP0_PWSIZE: + if (!cpu_guest_has_htw) + return -EINVAL; + *v = read_gc0_pwsize(); + break; case KVM_REG_MIPS_CP0_WIRED: *v = (long)read_gc0_wired(); break; + case KVM_REG_MIPS_CP0_PWCTL: + if (!cpu_guest_has_htw) + return -EINVAL; + *v = read_gc0_pwctl(); + break; case KVM_REG_MIPS_CP0_HWRENA: *v = (long)read_gc0_hwrena(); break; @@ -1746,9 +1781,29 @@ static int kvm_vz_set_one_reg(struct kvm_vcpu *vcpu, return -EINVAL; write_gc0_segctl2(v); break; + case KVM_REG_MIPS_CP0_PWBASE: + if (!cpu_guest_has_htw) + return -EINVAL; + write_gc0_pwbase(v); + break; + case KVM_REG_MIPS_CP0_PWFIELD: + if (!cpu_guest_has_htw) + return -EINVAL; + write_gc0_pwfield(v); + break; + case KVM_REG_MIPS_CP0_PWSIZE: + if (!cpu_guest_has_htw) + return -EINVAL; + write_gc0_pwsize(v); + break; case KVM_REG_MIPS_CP0_WIRED: change_gc0_wired(MIPSR6_WIRED_WIRED, v); break; + case KVM_REG_MIPS_CP0_PWCTL: + if (!cpu_guest_has_htw) + return -EINVAL; + write_gc0_pwctl(v); + break; case KVM_REG_MIPS_CP0_HWRENA: write_gc0_hwrena(v); break; @@ -2179,6 +2234,14 @@ static int kvm_vz_vcpu_load(struct kvm_vcpu *vcpu, int cpu) kvm_restore_gc0_segctl2(cop0); } + /* restore HTW registers */ + if (cpu_guest_has_htw) { + kvm_restore_gc0_pwbase(cop0); + kvm_restore_gc0_pwfield(cop0); + kvm_restore_gc0_pwsize(cop0); + kvm_restore_gc0_pwctl(cop0); + } + /* restore Root.GuestCtl2 from unused Guest guestctl2 register */ if (cpu_has_guestctl2) write_c0_guestctl2( @@ -2268,6 +2331,15 @@ static int kvm_vz_vcpu_put(struct kvm_vcpu *vcpu, int cpu) kvm_save_gc0_segctl2(cop0); } + /* save HTW registers if enabled in guest */ + if (cpu_guest_has_htw && + kvm_read_sw_gc0_config3(cop0) & MIPS_CONF3_PW) { + kvm_save_gc0_pwbase(cop0); + kvm_save_gc0_pwfield(cop0); + kvm_save_gc0_pwsize(cop0); + kvm_save_gc0_pwctl(cop0); + } + kvm_vz_save_timer(vcpu); /* save Root.GuestCtl2 in unused Guest guestctl2 register */ @@ -2596,6 +2668,14 @@ static int kvm_vz_vcpu_setup(struct kvm_vcpu *vcpu) kvm_write_sw_gc0_segctl2(cop0, 0x00380438); } + /* reset HTW registers */ + if (cpu_guest_has_htw && cpu_has_mips_r6) { + /* PWField */ + kvm_write_sw_gc0_pwfield(cop0, 0x0c30c302); + /* PWSize */ + kvm_write_sw_gc0_pwsize(cop0, 1 << MIPS_PWSIZE_PTW_SHIFT); + } + /* start with no pending virtual guest interrupts */ if (cpu_has_guestctl2) cop0->reg[MIPS_CP0_GUESTCTL2][MIPS_CP0_GUESTCTL2_SEL] = 0; |