From: Avi Kivity <avi@qumranet.com>
To: kvm-devel@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org, akpm@osdl.org
Subject: [PATCH 9/38] KVM: Cache guest cr4 in vcpu structure
Date: Mon, 27 Nov 2006 12:19:37 -0000 [thread overview]
Message-ID: <20061127121937.601CC25015E@cleopatra.q> (raw)
In-Reply-To: <456AD5C6.1090406@qumranet.com>
This eliminates needing to have an arch operation to get cr4.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Index: linux-2.6/drivers/kvm/kvm.h
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm.h
+++ linux-2.6/drivers/kvm/kvm.h
@@ -168,6 +168,7 @@ struct kvm_vcpu {
unsigned long cr2;
unsigned long cr3;
+ unsigned long cr4;
unsigned long cr8;
u64 shadow_efer;
u64 apic_base;
@@ -335,20 +336,14 @@ static inline int is_long_mode(void)
return vmcs_read32(VM_ENTRY_CONTROLS) & VM_ENTRY_CONTROLS_IA32E_MASK;
}
-static inline unsigned long guest_cr4(void)
+static inline int is_pae(struct kvm_vcpu *vcpu)
{
- return (vmcs_readl(CR4_READ_SHADOW) & KVM_GUEST_CR4_MASK) |
- (vmcs_readl(GUEST_CR4) & ~KVM_GUEST_CR4_MASK);
+ return vcpu->cr4 & CR4_PAE_MASK;
}
-static inline int is_pae(void)
+static inline int is_pse(struct kvm_vcpu *vcpu)
{
- return guest_cr4() & CR4_PAE_MASK;
-}
-
-static inline int is_pse(void)
-{
- return guest_cr4() & CR4_PSE_MASK;
+ return vcpu->cr4 & CR4_PSE_MASK;
}
static inline unsigned long guest_cr0(void)
Index: linux-2.6/drivers/kvm/kvm_main.c
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm_main.c
+++ linux-2.6/drivers/kvm/kvm_main.c
@@ -940,7 +940,7 @@ static void set_cr0(struct kvm_vcpu *vcp
#ifdef __x86_64__
if ((vcpu->shadow_efer & EFER_LME)) {
u32 guest_cs_ar;
- if (!is_pae()) {
+ if (!is_pae(vcpu)) {
printk(KERN_DEBUG "set_cr0: #GP, start paging "
"in long mode while PAE is disabled\n");
inject_gp(vcpu);
@@ -956,7 +956,7 @@ static void set_cr0(struct kvm_vcpu *vcp
}
} else
#endif
- if (is_pae() &&
+ if (is_pae(vcpu) &&
pdptrs_have_reserved_bits_set(vcpu, vcpu->cr3)) {
printk(KERN_DEBUG "set_cr0: #GP, pdptrs "
"reserved bits\n");
@@ -993,6 +993,7 @@ static void __set_cr4(struct kvm_vcpu *v
vmcs_writel(CR4_READ_SHADOW, cr4);
vmcs_writel(GUEST_CR4, cr4 | (vcpu->rmode.active ?
KVM_RMODE_VM_CR4_ALWAYS_ON : KVM_PMODE_VM_CR4_ALWAYS_ON));
+ vcpu->cr4 = cr4;
}
static void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
@@ -1010,7 +1011,7 @@ static void set_cr4(struct kvm_vcpu *vcp
inject_gp(vcpu);
return;
}
- } else if (is_paging() && !is_pae() && (cr4 & CR4_PAE_MASK)
+ } else if (is_paging() && !is_pae(vcpu) && (cr4 & CR4_PAE_MASK)
&& pdptrs_have_reserved_bits_set(vcpu, vcpu->cr3)) {
printk(KERN_DEBUG "set_cr4: #GP, pdptrs reserved bits\n");
inject_gp(vcpu);
@@ -1041,7 +1042,7 @@ static void set_cr3(struct kvm_vcpu *vcp
inject_gp(vcpu);
return;
}
- if (is_paging() && is_pae() &&
+ if (is_paging() && is_pae(vcpu) &&
pdptrs_have_reserved_bits_set(vcpu, cr3)) {
printk(KERN_DEBUG "set_cr3: #GP, pdptrs "
"reserved bits\n");
@@ -1902,7 +1903,7 @@ unsigned long realmode_get_cr(struct kvm
case 3:
return vcpu->cr3;
case 4:
- return guest_cr4();
+ return vcpu->cr4;
default:
vcpu_printf(vcpu, "%s: unexpected cr %u\n", __FUNCTION__, cr);
return 0;
@@ -1924,7 +1925,7 @@ void realmode_set_cr(struct kvm_vcpu *vc
set_cr3(vcpu, val);
break;
case 4:
- set_cr4(vcpu, mk_cr_64(guest_cr4(), val));
+ set_cr4(vcpu, mk_cr_64(vcpu->cr4, val));
break;
default:
vcpu_printf(vcpu, "%s: unexpected cr %u\n", __FUNCTION__, cr);
@@ -2844,7 +2845,7 @@ static int kvm_dev_ioctl_get_sregs(struc
sregs->cr0 = guest_cr0();
sregs->cr2 = vcpu->cr2;
sregs->cr3 = vcpu->cr3;
- sregs->cr4 = guest_cr4();
+ sregs->cr4 = vcpu->cr4;
sregs->cr8 = vcpu->cr8;
sregs->efer = vcpu->shadow_efer;
sregs->apic_base = vcpu->apic_base;
@@ -2912,7 +2913,7 @@ static int kvm_dev_ioctl_set_sregs(struc
vmcs_writel(GUEST_CR0,
(sregs->cr0 & ~KVM_GUEST_CR0_MASK) | KVM_VM_CR0_ALWAYS_ON);
- mmu_reset_needed |= guest_cr4() != sregs->cr4;
+ mmu_reset_needed |= vcpu->cr4 != sregs->cr4;
__set_cr4(vcpu, sregs->cr4);
if (mmu_reset_needed)
Index: linux-2.6/drivers/kvm/mmu.c
===================================================================
--- linux-2.6.orig/drivers/kvm/mmu.c
+++ linux-2.6/drivers/kvm/mmu.c
@@ -564,7 +564,7 @@ static int paging64_init_context(struct
{
struct kvm_mmu *context = &vcpu->mmu;
- ASSERT(is_pae());
+ ASSERT(is_pae(vcpu));
context->new_cr3 = paging_new_cr3;
context->page_fault = paging64_page_fault;
context->inval_page = paging_inval_page;
@@ -618,7 +618,7 @@ static int init_kvm_mmu(struct kvm_vcpu
return nonpaging_init_context(vcpu);
else if (is_long_mode())
return paging64_init_context(vcpu);
- else if (is_pae())
+ else if (is_pae(vcpu))
return paging32E_init_context(vcpu);
else
return paging32_init_context(vcpu);
Index: linux-2.6/drivers/kvm/paging_tmpl.h
===================================================================
--- linux-2.6.orig/drivers/kvm/paging_tmpl.h
+++ linux-2.6/drivers/kvm/paging_tmpl.h
@@ -70,7 +70,7 @@ static void FNAME(init_walker)(struct gu
hpa = safe_gpa_to_hpa(vcpu, vcpu->cr3 & PT64_BASE_ADDR_MASK);
walker->table = kmap_atomic(pfn_to_page(hpa >> PAGE_SHIFT), KM_USER0);
- ASSERT((!is_long_mode() && is_pae()) ||
+ ASSERT((!is_long_mode() && is_pae(vcpu)) ||
(vcpu->cr3 & ~(PAGE_MASK | CR3_FLAGS_MASK)) == 0);
walker->table = (pt_element_t *)( (unsigned long)walker->table |
@@ -133,7 +133,7 @@ static pt_element_t *FNAME(fetch_guest)(
!is_present_pte(walker->table[index]) ||
(walker->level == PT_DIRECTORY_LEVEL &&
(walker->table[index] & PT_PAGE_SIZE_MASK) &&
- (PTTYPE == 64 || is_pse())))
+ (PTTYPE == 64 || is_pse(vcpu))))
return &walker->table[index];
if (walker->level != 3 || is_long_mode())
walker->inherited_ar &= walker->table[index];
@@ -369,7 +369,7 @@ static gpa_t FNAME(gva_to_gpa)(struct kv
if (walker.level == PT_DIRECTORY_LEVEL) {
ASSERT((guest_pte & PT_PAGE_SIZE_MASK));
- ASSERT(PTTYPE == 64 || is_pse());
+ ASSERT(PTTYPE == 64 || is_pse(vcpu));
gpa = (guest_pte & PT_DIR_BASE_ADDR_MASK) | (vaddr &
(PT_LEVEL_MASK(PT_PAGE_TABLE_LEVEL) | ~PAGE_MASK));
Index: linux-2.6/drivers/kvm/kvm_vmx.h
===================================================================
--- /dev/null
+++ linux-2.6/drivers/kvm/kvm_vmx.h
@@ -0,0 +1,20 @@
+#ifndef __KVM_VMX_H
+#define __KVM_VMX_H
+
+static inline void vmcs_write16(unsigned long field, u16 value)
+{
+ vmcs_writel(field, value);
+}
+
+static inline void vmcs_write64(unsigned long field, u64 value)
+{
+#ifdef __x86_64__
+ vmcs_writel(field, value);
+#else
+ vmcs_writel(field, value);
+ asm volatile ("");
+ vmcs_writel(field+1, value >> 32);
+#endif
+}
+
+#endif
next prev parent reply other threads:[~2006-11-27 12:19 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-27 12:10 [PATCH 0/38] KVM: Decouple Intel VT implementation from base kvm Avi Kivity
2006-11-27 12:11 ` [PATCH 1/38] KVM: Create kvm-intel.ko module Avi Kivity
2006-11-27 12:36 ` Ingo Molnar
2006-11-30 14:24 ` Christoph Hellwig
2006-11-30 15:44 ` Ingo Molnar
2006-11-30 19:59 ` Andrew Morton
2006-11-30 20:19 ` Ingo Molnar
2006-11-30 20:24 ` Christoph Hellwig
2006-11-30 20:31 ` Ingo Molnar
2006-11-27 12:12 ` [PATCH 2/38] KVM: Make /dev/registration happen when the arch specific module is loaded Avi Kivity
2006-11-27 12:13 ` [PATCH 0/38] KVM: Decouple Intel VT implementation from base kvm Avi Kivity
2006-11-27 12:13 ` [PATCH 3/38] KV: Make hardware detection an arch operation Avi Kivity
2006-11-27 12:14 ` [PATCH 4/38] KVM: Make the per-cpu enable/disable functions arch operations Avi Kivity
2006-11-27 12:15 ` [PATCH 5/38] KVM: Make the hardware setup operations (non-percpu) " Avi Kivity
2006-11-27 12:16 ` [PATCH 6/38] KVM: Make the guest debugger an arch operation Avi Kivity
2006-11-27 12:17 ` [PATCH 7/38] KVM: Make msr accessors arch operations Avi Kivity
2006-11-27 12:18 ` [PATCH 8/38] KVM: Make the segment " Avi Kivity
2006-11-27 12:19 ` Avi Kivity [this message]
2006-11-27 12:20 ` [PATCH 10/38] KVM: Cache guest cr0 in vcpu structure Avi Kivity
2006-11-27 12:21 ` [PATCH 11/38] KVM: Add get_segment_base() arch accessor Avi Kivity
2006-11-27 12:22 ` [PATCH 12/38] KVM: Add idt and gdt descriptor accessors Avi Kivity
2006-11-27 12:23 ` [PATCH 13/38] KVM: Make syncing the register file to the vcpu structure an arch operation Avi Kivity
2006-11-27 12:24 ` [PATCH 14/38] KVM: Make the vcpu execution loop " Avi Kivity
2006-11-27 12:25 ` [PATCH 15/38] KVM: Move the vmx exit handlers to vmx.c Avi Kivity
2006-11-27 12:26 ` [PATCH 16/38] KVM: Make vcpu_setup() an arch operation Avi Kivity
2006-11-27 12:27 ` [PATCH 17/38] KVM: Make __set_cr0() (and dependencies) arch operations Avi Kivity
2006-11-27 12:28 ` [PATCH 18/38] KVM: Make __set_cr4() an arch operation Avi Kivity
2006-11-27 12:29 ` [PATCH 19/38] KVM: Make __set_efer() " Avi Kivity
2006-11-27 13:39 ` Christoph Hellwig
2006-11-27 13:46 ` Avi Kivity
2006-11-27 12:30 ` [PATCH 20/38] KVM: Make set_cr3() and tlb flushing arch operations Avi Kivity
2006-11-27 12:31 ` [PATCH 21/38] KVM: Make inject_page_fault() an arch operation Avi Kivity
2006-11-27 12:32 ` [PATCH 22/38] KVM: Make inject_gp() " Avi Kivity
2006-11-27 12:33 ` [PATCH 23/38] KVM: Use the idt and gdt accessors in realmode emulation Avi Kivity
2006-11-27 12:34 ` [PATCH 24/38] KVM: Use the general purpose register accessors rather than direct access Avi Kivity
2006-11-27 12:35 ` [PATCH 25/38] KVM: Move the vmx tsc accessors to vmx.c Avi Kivity
2006-11-27 12:36 ` [PATCH 26/38] KVM: Access rflags through an arch operation Avi Kivity
2006-11-27 12:37 ` [PATCH 27/38] KVM: Move the vmx segment field definitions to vmx.c Avi Kivity
2006-11-27 12:38 ` [PATCH 28/38] KVM: Add an arch accessor for cs d/b and l bits Avi Kivity
2006-11-27 12:39 ` [PATCH 29/38] KVM: Add a set_cr0_no_modeswitch() arch accessor Avi Kivity
2006-11-27 12:40 ` [PATCH 30/38] KVM: Make vcpu_load() and vcpu_put() arch operations Avi Kivity
2006-11-27 12:41 ` [PATCH 31/38] KVM: Make vcpu creation and destruction " Avi Kivity
2006-11-27 12:42 ` [PATCH 32/38] KVM: Move vmcs static variables to vmx.c Avi Kivity
2006-11-27 12:43 ` [PATCH 33/38] KVM: Make is_long_mode() an arch operation Avi Kivity
2006-11-27 12:44 ` [PATCH 34/38] KVM: Use the tlb flush arch operation instead of an inline Avi Kivity
2006-11-27 12:45 ` [PATCH 35/38] KVM: Remove guest_cpl() Avi Kivity
2006-11-27 12:46 ` [PATCH 36/38] KVM: Move vmcs accessors to vmx.c Avi Kivity
2006-11-27 12:47 ` [PATCH 37/38] KVM: Move vmx helper inlines " Avi Kivity
2006-11-27 12:48 ` [PATCH 38/38] KVM: Remove vmx includes from arch independent code Avi Kivity
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