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* s390: nested virt fixes (new 4.8 feature)

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* x86: fixes for 4.8 regressions
 * ARM: two small bugfixes
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 - s390: nested virt fixes (new 4.8 feature)
 - x86: fixes for 4.8 regressions
 - ARM: two small bugfixes

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm-arm: Unmap shadow pagetables properly
  x86, clock: Fix kvm guest tsc initialization
  arm: KVM: Fix idmap overlap detection when the kernel is idmap'ed
  KVM: lapic: adjust preemption timer correctly when goes TSC backward
  KVM: s390: vsie: fix riccbd
  KVM: s390: don't use current->thread.fpu.* when accessing registers
This commit is contained in:
Linus Torvalds 2016-09-12 14:30:14 -07:00
commit ac059c4fa7
6 changed files with 15 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/kvm/arm.c
View File

@ -158,8 +158,6 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
{
int i;
kvm_free_stage2_pgd(kvm);
for (i = 0; i < KVM_MAX_VCPUS; ++i) {
if (kvm->vcpus[i]) {
kvm_arch_vcpu_free(kvm->vcpus[i]);

4
arch/arm/kvm/mmu.c
View File

@ -1714,7 +1714,8 @@ int kvm_mmu_init(void)
kern_hyp_va(PAGE_OFFSET), kern_hyp_va(~0UL));
if (hyp_idmap_start >= kern_hyp_va(PAGE_OFFSET) &&
hyp_idmap_start < kern_hyp_va(~0UL)) {
hyp_idmap_start < kern_hyp_va(~0UL) &&
hyp_idmap_start != (unsigned long)__hyp_idmap_text_start) {
/*
* The idmap page is intersecting with the VA space,
* it is not safe to continue further.
@ -1893,6 +1894,7 @@ void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots)
void kvm_arch_flush_shadow_all(struct kvm *kvm)
{
kvm_free_stage2_pgd(kvm);
}
void kvm_arch_flush_shadow_memslot(struct kvm *kvm,

10
arch/s390/kvm/kvm-s390.c
View File

@ -2231,9 +2231,10 @@ int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
return -EINVAL;
current->thread.fpu.fpc = fpu->fpc;
if (MACHINE_HAS_VX)
convert_fp_to_vx(current->thread.fpu.vxrs, (freg_t *)fpu->fprs);
convert_fp_to_vx((__vector128 *) vcpu->run->s.regs.vrs,
(freg_t *) fpu->fprs);
else
memcpy(current->thread.fpu.fprs, &fpu->fprs, sizeof(fpu->fprs));
memcpy(vcpu->run->s.regs.fprs, &fpu->fprs, sizeof(fpu->fprs));
return 0;
}
@ -2242,9 +2243,10 @@ int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
/* make sure we have the latest values */
save_fpu_regs();
if (MACHINE_HAS_VX)
convert_vx_to_fp((freg_t *)fpu->fprs, current->thread.fpu.vxrs);
convert_vx_to_fp((freg_t *) fpu->fprs,
(__vector128 *) vcpu->run->s.regs.vrs);
else
memcpy(fpu->fprs, current->thread.fpu.fprs, sizeof(fpu->fprs));
memcpy(fpu->fprs, vcpu->run->s.regs.fprs, sizeof(fpu->fprs));
fpu->fpc = current->thread.fpu.fpc;
return 0;
}

2
arch/s390/kvm/vsie.c
View File

@ -584,7 +584,7 @@ static int pin_blocks(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
/* Validity 0x0044 will be checked by SIE */
if (rc)
goto unpin;
scb_s->gvrd = hpa;
scb_s->riccbd = hpa;
}
return 0;
unpin:

1
arch/x86/kernel/kvmclock.c
View File

@ -289,6 +289,7 @@ void __init kvmclock_init(void)
put_cpu();
x86_platform.calibrate_tsc = kvm_get_tsc_khz;
x86_platform.calibrate_cpu = kvm_get_tsc_khz;
x86_platform.get_wallclock = kvm_get_wallclock;
x86_platform.set_wallclock = kvm_set_wallclock;
#ifdef CONFIG_X86_LOCAL_APIC

8
arch/x86/kvm/x86.c
View File

@ -2743,16 +2743,16 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
if (tsc_delta < 0)
mark_tsc_unstable("KVM discovered backwards TSC");
if (kvm_lapic_hv_timer_in_use(vcpu) &&
kvm_x86_ops->set_hv_timer(vcpu,
kvm_get_lapic_tscdeadline_msr(vcpu)))
kvm_lapic_switch_to_sw_timer(vcpu);
if (check_tsc_unstable()) {
u64 offset = kvm_compute_tsc_offset(vcpu,
vcpu->arch.last_guest_tsc);
kvm_x86_ops->write_tsc_offset(vcpu, offset);
vcpu->arch.tsc_catchup = 1;
}
if (kvm_lapic_hv_timer_in_use(vcpu) &&
kvm_x86_ops->set_hv_timer(vcpu,
kvm_get_lapic_tscdeadline_msr(vcpu)))
kvm_lapic_switch_to_sw_timer(vcpu);
/*
* On a host with synchronized TSC, there is no need to update
* kvmclock on vcpu->cpu migration