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Merge branch 'x86/hyperv' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Topic branch for stable KVM clockource under Hyper-V.

Thanks to Christoffer Dall for resolving the ARM conflict.
This commit is contained in:
Radim Krčmář
2018-02-01 15:04:17 +01:00
parent 87cedc6be5 5fa4ec9cb2
commit 7bf14c28ee
2721 changed files with 90777 additions and 47548 deletions
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32
arch/x86/kvm/svm.c
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@@ -49,6 +49,7 @@
#include <asm/debugreg.h>
#include <asm/kvm_para.h>
#include <asm/irq_remapping.h>
#include <asm/nospec-branch.h>
#include <asm/virtext.h>
#include "trace.h"
@@ -404,7 +405,6 @@ static void recalc_intercepts(struct vcpu_svm *svm)
{
struct vmcb_control_area *c, *h;
struct nested_state *g;
u32 h_intercept_exceptions;
mark_dirty(svm->vmcb, VMCB_INTERCEPTS);
@@ -415,14 +415,9 @@ static void recalc_intercepts(struct vcpu_svm *svm)
h = &svm->nested.hsave->control;
g = &svm->nested;
/* No need to intercept #UD if L1 doesn't intercept it */
h_intercept_exceptions =
h->intercept_exceptions & ~(1U << UD_VECTOR);
c->intercept_cr = h->intercept_cr | g->intercept_cr;
c->intercept_dr = h->intercept_dr | g->intercept_dr;
c->intercept_exceptions =
h_intercept_exceptions | g->intercept_exceptions;
c->intercept_exceptions = h->intercept_exceptions | g->intercept_exceptions;
c->intercept = h->intercept | g->intercept;
}
@@ -2500,7 +2495,6 @@ static int ud_interception(struct vcpu_svm *svm)
{
int er;
WARN_ON_ONCE(is_guest_mode(&svm->vcpu));
er = emulate_instruction(&svm->vcpu, EMULTYPE_TRAP_UD);
if (er == EMULATE_USER_EXIT)
return 0;
@@ -5311,6 +5305,25 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
"mov %%r13, %c[r13](%[svm]) \n\t"
"mov %%r14, %c[r14](%[svm]) \n\t"
"mov %%r15, %c[r15](%[svm]) \n\t"
#endif
/*
* Clear host registers marked as clobbered to prevent
* speculative use.
*/
"xor %%" _ASM_BX ", %%" _ASM_BX " \n\t"
"xor %%" _ASM_CX ", %%" _ASM_CX " \n\t"
"xor %%" _ASM_DX ", %%" _ASM_DX " \n\t"
"xor %%" _ASM_SI ", %%" _ASM_SI " \n\t"
"xor %%" _ASM_DI ", %%" _ASM_DI " \n\t"
#ifdef CONFIG_X86_64
"xor %%r8, %%r8 \n\t"
"xor %%r9, %%r9 \n\t"
"xor %%r10, %%r10 \n\t"
"xor %%r11, %%r11 \n\t"
"xor %%r12, %%r12 \n\t"
"xor %%r13, %%r13 \n\t"
"xor %%r14, %%r14 \n\t"
"xor %%r15, %%r15 \n\t"
#endif
"pop %%" _ASM_BP
:
@@ -5341,6 +5354,9 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
#endif
);
/* Eliminate branch target predictions from guest mode */
vmexit_fill_RSB();
#ifdef CONFIG_X86_64
wrmsrl(MSR_GS_BASE, svm->host.gs_base);
#else