| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Sun, 16 Aug 2009 12:30:01 +0300
From: Avi Kivity <avi@...hat.com>
To: kvm@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 41/48] KVM: VMX: Move rmode structure to vmx-specific code
rmode is only used in vmx, so move it to vmx.c
Signed-off-by: Avi Kivity <avi@...hat.com>
---
arch/x86/include/asm/kvm_host.h | 10 -----
arch/x86/kvm/vmx.c | 78 ++++++++++++++++++++++-----------------
2 files changed, 44 insertions(+), 44 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index a1a96a5..c7b0cc2 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -340,16 +340,6 @@ struct kvm_vcpu_arch {
u8 nr;
} interrupt;
- struct {
- int vm86_active;
- u8 save_iopl;
- struct kvm_save_segment {
- u16 selector;
- unsigned long base;
- u32 limit;
- u32 ar;
- } tr, es, ds, fs, gs;
- } rmode;
int halt_request; /* real mode on Intel only */
int cpuid_nent;
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index f0f9773..ae68292 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -88,6 +88,14 @@ struct vcpu_vmx {
int guest_efer_loaded;
} host_state;
struct {
+ int vm86_active;
+ u8 save_iopl;
+ struct kvm_save_segment {
+ u16 selector;
+ unsigned long base;
+ u32 limit;
+ u32 ar;
+ } tr, es, ds, fs, gs;
struct {
bool pending;
u8 vector;
@@ -516,7 +524,7 @@ static void update_exception_bitmap(struct kvm_vcpu *vcpu)
if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
eb |= 1u << BP_VECTOR;
}
- if (vcpu->arch.rmode.vm86_active)
+ if (to_vmx(vcpu)->rmode.vm86_active)
eb = ~0;
if (enable_ept)
eb &= ~(1u << PF_VECTOR); /* bypass_guest_pf = 0 */
@@ -752,7 +760,7 @@ static unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu)
static void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
{
- if (vcpu->arch.rmode.vm86_active)
+ if (to_vmx(vcpu)->rmode.vm86_active)
rflags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
vmcs_writel(GUEST_RFLAGS, rflags);
}
@@ -809,7 +817,7 @@ static void vmx_queue_exception(struct kvm_vcpu *vcpu, unsigned nr,
intr_info |= INTR_INFO_DELIVER_CODE_MASK;
}
- if (vcpu->arch.rmode.vm86_active) {
+ if (vmx->rmode.vm86_active) {
vmx->rmode.irq.pending = true;
vmx->rmode.irq.vector = nr;
vmx->rmode.irq.rip = kvm_rip_read(vcpu);
@@ -1395,15 +1403,15 @@ static void enter_pmode(struct kvm_vcpu *vcpu)
struct vcpu_vmx *vmx = to_vmx(vcpu);
vmx->emulation_required = 1;
- vcpu->arch.rmode.vm86_active = 0;
+ vmx->rmode.vm86_active = 0;
- vmcs_writel(GUEST_TR_BASE, vcpu->arch.rmode.tr.base);
- vmcs_write32(GUEST_TR_LIMIT, vcpu->arch.rmode.tr.limit);
- vmcs_write32(GUEST_TR_AR_BYTES, vcpu->arch.rmode.tr.ar);
+ vmcs_writel(GUEST_TR_BASE, vmx->rmode.tr.base);
+ vmcs_write32(GUEST_TR_LIMIT, vmx->rmode.tr.limit);
+ vmcs_write32(GUEST_TR_AR_BYTES, vmx->rmode.tr.ar);
flags = vmcs_readl(GUEST_RFLAGS);
flags &= ~(X86_EFLAGS_IOPL | X86_EFLAGS_VM);
- flags |= (vcpu->arch.rmode.save_iopl << IOPL_SHIFT);
+ flags |= (vmx->rmode.save_iopl << IOPL_SHIFT);
vmcs_writel(GUEST_RFLAGS, flags);
vmcs_writel(GUEST_CR4, (vmcs_readl(GUEST_CR4) & ~X86_CR4_VME) |
@@ -1414,10 +1422,10 @@ static void enter_pmode(struct kvm_vcpu *vcpu)
if (emulate_invalid_guest_state)
return;
- fix_pmode_dataseg(VCPU_SREG_ES, &vcpu->arch.rmode.es);
- fix_pmode_dataseg(VCPU_SREG_DS, &vcpu->arch.rmode.ds);
- fix_pmode_dataseg(VCPU_SREG_GS, &vcpu->arch.rmode.gs);
- fix_pmode_dataseg(VCPU_SREG_FS, &vcpu->arch.rmode.fs);
+ fix_pmode_dataseg(VCPU_SREG_ES, &vmx->rmode.es);
+ fix_pmode_dataseg(VCPU_SREG_DS, &vmx->rmode.ds);
+ fix_pmode_dataseg(VCPU_SREG_GS, &vmx->rmode.gs);
+ fix_pmode_dataseg(VCPU_SREG_FS, &vmx->rmode.fs);
vmcs_write16(GUEST_SS_SELECTOR, 0);
vmcs_write32(GUEST_SS_AR_BYTES, 0x93);
@@ -1460,19 +1468,19 @@ static void enter_rmode(struct kvm_vcpu *vcpu)
return;
vmx->emulation_required = 1;
- vcpu->arch.rmode.vm86_active = 1;
+ vmx->rmode.vm86_active = 1;
- vcpu->arch.rmode.tr.base = vmcs_readl(GUEST_TR_BASE);
+ vmx->rmode.tr.base = vmcs_readl(GUEST_TR_BASE);
vmcs_writel(GUEST_TR_BASE, rmode_tss_base(vcpu->kvm));
- vcpu->arch.rmode.tr.limit = vmcs_read32(GUEST_TR_LIMIT);
+ vmx->rmode.tr.limit = vmcs_read32(GUEST_TR_LIMIT);
vmcs_write32(GUEST_TR_LIMIT, RMODE_TSS_SIZE - 1);
- vcpu->arch.rmode.tr.ar = vmcs_read32(GUEST_TR_AR_BYTES);
+ vmx->rmode.tr.ar = vmcs_read32(GUEST_TR_AR_BYTES);
vmcs_write32(GUEST_TR_AR_BYTES, 0x008b);
flags = vmcs_readl(GUEST_RFLAGS);
- vcpu->arch.rmode.save_iopl
+ vmx->rmode.save_iopl
= (flags & X86_EFLAGS_IOPL) >> IOPL_SHIFT;
flags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
@@ -1494,10 +1502,10 @@ static void enter_rmode(struct kvm_vcpu *vcpu)
vmcs_writel(GUEST_CS_BASE, 0xf0000);
vmcs_write16(GUEST_CS_SELECTOR, vmcs_readl(GUEST_CS_BASE) >> 4);
- fix_rmode_seg(VCPU_SREG_ES, &vcpu->arch.rmode.es);
- fix_rmode_seg(VCPU_SREG_DS, &vcpu->arch.rmode.ds);
- fix_rmode_seg(VCPU_SREG_GS, &vcpu->arch.rmode.gs);
- fix_rmode_seg(VCPU_SREG_FS, &vcpu->arch.rmode.fs);
+ fix_rmode_seg(VCPU_SREG_ES, &vmx->rmode.es);
+ fix_rmode_seg(VCPU_SREG_DS, &vmx->rmode.ds);
+ fix_rmode_seg(VCPU_SREG_GS, &vmx->rmode.gs);
+ fix_rmode_seg(VCPU_SREG_FS, &vmx->rmode.fs);
continue_rmode:
kvm_mmu_reset_context(vcpu);
@@ -1638,6 +1646,7 @@ static void ept_update_paging_mode_cr4(unsigned long *hw_cr4,
static void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
{
+ struct vcpu_vmx *vmx = to_vmx(vcpu);
unsigned long hw_cr0;
if (enable_unrestricted_guest)
@@ -1648,10 +1657,10 @@ static void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
vmx_fpu_deactivate(vcpu);
- if (vcpu->arch.rmode.vm86_active && (cr0 & X86_CR0_PE))
+ if (vmx->rmode.vm86_active && (cr0 & X86_CR0_PE))
enter_pmode(vcpu);
- if (!vcpu->arch.rmode.vm86_active && !(cr0 & X86_CR0_PE))
+ if (!vmx->rmode.vm86_active && !(cr0 & X86_CR0_PE))
enter_rmode(vcpu);
#ifdef CONFIG_X86_64
@@ -1707,7 +1716,7 @@ static void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
static void vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
{
- unsigned long hw_cr4 = cr4 | (vcpu->arch.rmode.vm86_active ?
+ unsigned long hw_cr4 = cr4 | (to_vmx(vcpu)->rmode.vm86_active ?
KVM_RMODE_VM_CR4_ALWAYS_ON : KVM_PMODE_VM_CR4_ALWAYS_ON);
vcpu->arch.cr4 = cr4;
@@ -1787,20 +1796,21 @@ static u32 vmx_segment_access_rights(struct kvm_segment *var)
static void vmx_set_segment(struct kvm_vcpu *vcpu,
struct kvm_segment *var, int seg)
{
+ struct vcpu_vmx *vmx = to_vmx(vcpu);
struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
u32 ar;
- if (vcpu->arch.rmode.vm86_active && seg == VCPU_SREG_TR) {
- vcpu->arch.rmode.tr.selector = var->selector;
- vcpu->arch.rmode.tr.base = var->base;
- vcpu->arch.rmode.tr.limit = var->limit;
- vcpu->arch.rmode.tr.ar = vmx_segment_access_rights(var);
+ if (vmx->rmode.vm86_active && seg == VCPU_SREG_TR) {
+ vmx->rmode.tr.selector = var->selector;
+ vmx->rmode.tr.base = var->base;
+ vmx->rmode.tr.limit = var->limit;
+ vmx->rmode.tr.ar = vmx_segment_access_rights(var);
return;
}
vmcs_writel(sf->base, var->base);
vmcs_write32(sf->limit, var->limit);
vmcs_write16(sf->selector, var->selector);
- if (vcpu->arch.rmode.vm86_active && var->s) {
+ if (vmx->rmode.vm86_active && var->s) {
/*
* Hack real-mode segments into vm86 compatibility.
*/
@@ -2394,7 +2404,7 @@ static int vmx_vcpu_reset(struct kvm_vcpu *vcpu)
goto out;
}
- vmx->vcpu.arch.rmode.vm86_active = 0;
+ vmx->rmode.vm86_active = 0;
vmx->soft_vnmi_blocked = 0;
@@ -2532,7 +2542,7 @@ static void vmx_inject_irq(struct kvm_vcpu *vcpu)
KVMTRACE_1D(INJ_VIRQ, vcpu, (u32)irq, handler);
++vcpu->stat.irq_injections;
- if (vcpu->arch.rmode.vm86_active) {
+ if (vmx->rmode.vm86_active) {
vmx->rmode.irq.pending = true;
vmx->rmode.irq.vector = irq;
vmx->rmode.irq.rip = kvm_rip_read(vcpu);
@@ -2573,7 +2583,7 @@ static void vmx_inject_nmi(struct kvm_vcpu *vcpu)
}
++vcpu->stat.nmi_injections;
- if (vcpu->arch.rmode.vm86_active) {
+ if (vmx->rmode.vm86_active) {
vmx->rmode.irq.pending = true;
vmx->rmode.irq.vector = NMI_VECTOR;
vmx->rmode.irq.rip = kvm_rip_read(vcpu);
@@ -2737,7 +2747,7 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
return kvm_mmu_page_fault(vcpu, cr2, error_code);
}
- if (vcpu->arch.rmode.vm86_active &&
+ if (vmx->rmode.vm86_active &&
handle_rmode_exception(vcpu, intr_info & INTR_INFO_VECTOR_MASK,
error_code)) {
if (vcpu->arch.halt_request) {
--
1.6.3.3
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists