[PATCH 010/104] KVM: Trivial: Use standard CR0 flags macros from asm/cpu-features.h

Avi Kivity
2007-09-17T08:35:43Z

From: Rusty Russell <rusty@rustcorp.com.au>

The kernel now has asm/cpu-features.h: use those macros instead of
inventing our own.

Also spell out definition of CR0_RESEVED_BITS (no code change) and fix typo.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---
drivers/kvm/kvm.h | 19 +++++--------------
drivers/kvm/kvm_main.c | 15 +++++++++------
drivers/kvm/mmu.c | 2 +-
drivers/kvm/svm.c | 20 ++++++++++----------
drivers/kvm/vmx.c | 22 +++++++++++-----------
5 files changed, 36 insertions(+), 42 deletions(-)

diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index b629a83..7117c3b 100644
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -19,15 +19,6 @@
#include <linux/kvm.h>
#include <linux/kvm_para.h>

-#define CR0_PE_MASK (1ULL << 0)
-#define CR0_MP_MASK (1ULL << 1)
-#define CR0_TS_MASK (1ULL << 3)
-#define CR0_NE_MASK (1ULL << 5)
-#define CR0_WP_MASK (1ULL << 16)
-#define CR0_NW_MASK (1ULL << 29)
-#define CR0_CD_MASK (1ULL << 30)
-#define CR0_PG_MASK (1ULL << 31)
-
#define CR3_WPT_MASK (1ULL << 3)
#define CR3_PCD_MASK (1ULL << 4)

@@ -42,11 +33,11 @@
#define CR4_VMXE_MASK (1ULL << 13)

#define KVM_GUEST_CR0_MASK \
- (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK \
- | CR0_NW_MASK | CR0_CD_MASK)
+ (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
+ | X86_CR0_NW | X86_CR0_CD)
#define KVM_VM_CR0_ALWAYS_ON \
- (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK | CR0_TS_MASK \
- | CR0_MP_MASK)
+ (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
+ | X86_CR0_MP)
#define KVM_GUEST_CR4_MASK \
(CR4_PSE_MASK | CR4_PAE_MASK | CR4_PGE_MASK | CR4_VMXE_MASK | CR4_VME_MASK)
#define KVM_PMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK)
@@ -667,7 +658,7 @@ static inline int is_pse(struct kvm_vcpu *vcpu)

static inline int is_paging(struct kvm_vcpu *vcpu)
{
- return vcpu->cr0 & CR0_PG_MASK;
+ return vcpu->cr0 & X86_CR0_PG;
}

static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index 326fa79..5d8febe 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -82,7 +82,10 @@ static struct dentry *debugfs_dir;

#define MAX_IO_MSRS 256

-#define CR0_RESEVED_BITS 0xffffffff1ffaffc0ULL
+#define CR0_RESERVED_BITS \
+ (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
+ | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
+ | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
#define LMSW_GUEST_MASK 0x0eULL
#define CR4_RESEVED_BITS (~((1ULL << 11) - 1))
#define CR8_RESEVED_BITS (~0x0fULL)
@@ -466,27 +469,27 @@ out:

void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
{
- if (cr0 & CR0_RESEVED_BITS) {
+ if (cr0 & CR0_RESERVED_BITS) {
printk(KERN_DEBUG "set_cr0: 0x%lx #GP, reserved bits 0x%lx\n",
cr0, vcpu->cr0);
inject_gp(vcpu);
return;
}

- if ((cr0 & CR0_NW_MASK) && !(cr0 & CR0_CD_MASK)) {
+ if ((cr0 & X86_CR0_NW) && !(cr0 & X86_CR0_CD)) {
printk(KERN_DEBUG "set_cr0: #GP, CD == 0 && NW == 1\n");
inject_gp(vcpu);
return;
}

- if ((cr0 & CR0_PG_MASK) && !(cr0 & CR0_PE_MASK)) {
+ if ((cr0 & X86_CR0_PG) && !(cr0 & X86_CR0_PE)) {
printk(KERN_DEBUG "set_cr0: #GP, set PG flag "
"and a clear PE flag\n");
inject_gp(vcpu);
return;
}

- if (!is_paging(vcpu) && (cr0 & CR0_PG_MASK)) {
+ if (!is_paging(vcpu) && (cr0 & X86_CR0_PG)) {
#ifdef CONFIG_X86_64
if ((vcpu->shadow_efer & EFER_LME)) {
int cs_db, cs_l;
@@ -1158,7 +1161,7 @@ int emulate_clts(struct kvm_vcpu *vcpu)
{
unsigned long cr0;

- cr0 = vcpu->cr0 & ~CR0_TS_MASK;
+ cr0 = vcpu->cr0 & ~X86_CR0_TS;
kvm_arch_ops->set_cr0(vcpu, cr0);
return X86EMUL_CONTINUE;
}
diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index 23965aa..75faef4 100644
--- a/drivers/kvm/mmu.c
+++ b/drivers/kvm/mmu.c
@@ -158,7 +158,7 @@ static struct kmem_cache *mmu_page_header_cache;

static int is_write_protection(struct kvm_vcpu *vcpu)
{
- return vcpu->cr0 & CR0_WP_MASK;
+ return vcpu->cr0 & X86_CR0_WP;
}

static int is_cpuid_PSE36(void)
diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
index 52a11cc..e920c22 100644
--- a/drivers/kvm/svm.c
+++ b/drivers/kvm/svm.c
@@ -99,7 +99,7 @@ static unsigned get_addr_size(struct kvm_vcpu *vcpu)
struct vmcb_save_area *sa = &vcpu->svm->vmcb->save;
u16 cs_attrib;

- if (!(sa->cr0 & CR0_PE_MASK) || (sa->rflags & X86_EFLAGS_VM))
+ if (!(sa->cr0 & X86_CR0_PE) || (sa->rflags & X86_EFLAGS_VM))
return 2;

cs_attrib = sa->cs.attrib;
@@ -563,7 +563,7 @@ static void init_vmcb(struct vmcb *vmcb)
* cr0 val on cpu init should be 0x60000010, we enable cpu
* cache by default. the orderly way is to enable cache in bios.
*/
- save->cr0 = 0x00000010 | CR0_PG_MASK | CR0_WP_MASK;
+ save->cr0 = 0x00000010 | X86_CR0_PG | X86_CR0_WP;
save->cr4 = CR4_PAE_MASK;
/* rdx = ?? */
}
@@ -756,25 +756,25 @@ static void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
{
#ifdef CONFIG_X86_64
if (vcpu->shadow_efer & KVM_EFER_LME) {
- if (!is_paging(vcpu) && (cr0 & CR0_PG_MASK)) {
+ if (!is_paging(vcpu) && (cr0 & X86_CR0_PG)) {
vcpu->shadow_efer |= KVM_EFER_LMA;
vcpu->svm->vmcb->save.efer |= KVM_EFER_LMA | KVM_EFER_LME;
}

- if (is_paging(vcpu) && !(cr0 & CR0_PG_MASK) ) {
+ if (is_paging(vcpu) && !(cr0 & X86_CR0_PG) ) {
vcpu->shadow_efer &= ~KVM_EFER_LMA;
vcpu->svm->vmcb->save.efer &= ~(KVM_EFER_LMA | KVM_EFER_LME);
}
}
#endif
- if ((vcpu->cr0 & CR0_TS_MASK) && !(cr0 & CR0_TS_MASK)) {
+ if ((vcpu->cr0 & X86_CR0_TS) && !(cr0 & X86_CR0_TS)) {
vcpu->svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR);
vcpu->fpu_active = 1;
}

vcpu->cr0 = cr0;
- cr0 |= CR0_PG_MASK | CR0_WP_MASK;
- cr0 &= ~(CR0_CD_MASK | CR0_NW_MASK);
+ cr0 |= X86_CR0_PG | X86_CR0_WP;
+ cr0 &= ~(X86_CR0_CD | X86_CR0_NW);
vcpu->svm->vmcb->save.cr0 = cr0;
}

@@ -945,8 +945,8 @@ static int pf_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
static int nm_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
vcpu->svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR);
- if (!(vcpu->cr0 & CR0_TS_MASK))
- vcpu->svm->vmcb->save.cr0 &= ~CR0_TS_MASK;
+ if (!(vcpu->cr0 & X86_CR0_TS))
+ vcpu->svm->vmcb->save.cr0 &= ~X86_CR0_TS;
vcpu->fpu_active = 1;

return 1;
@@ -1702,7 +1702,7 @@ static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root)

if (vcpu->fpu_active) {
vcpu->svm->vmcb->control.intercept_exceptions |= (1 << NM_VECTOR);
- vcpu->svm->vmcb->save.cr0 |= CR0_TS_MASK;
+ vcpu->svm->vmcb->save.cr0 |= X86_CR0_TS;
vcpu->fpu_active = 0;
}
}
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index 7fa62c7..ebd93b4 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -436,9 +436,9 @@ static void vmx_fpu_activate(struct kvm_vcpu *vcpu)
if (vcpu->fpu_active)
return;
vcpu->fpu_active = 1;
- vmcs_clear_bits(GUEST_CR0, CR0_TS_MASK);
- if (vcpu->cr0 & CR0_TS_MASK)
- vmcs_set_bits(GUEST_CR0, CR0_TS_MASK);
+ vmcs_clear_bits(GUEST_CR0, X86_CR0_TS);
+ if (vcpu->cr0 & X86_CR0_TS)
+ vmcs_set_bits(GUEST_CR0, X86_CR0_TS);
update_exception_bitmap(vcpu);
}

@@ -447,7 +447,7 @@ static void vmx_fpu_deactivate(struct kvm_vcpu *vcpu)
if (!vcpu->fpu_active)
return;
vcpu->fpu_active = 0;
- vmcs_set_bits(GUEST_CR0, CR0_TS_MASK);
+ vmcs_set_bits(GUEST_CR0, X86_CR0_TS);
update_exception_bitmap(vcpu);
}

@@ -1002,17 +1002,17 @@ static void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
{
vmx_fpu_deactivate(vcpu);

- if (vcpu->rmode.active && (cr0 & CR0_PE_MASK))
+ if (vcpu->rmode.active && (cr0 & X86_CR0_PE))
enter_pmode(vcpu);

- if (!vcpu->rmode.active && !(cr0 & CR0_PE_MASK))
+ if (!vcpu->rmode.active && !(cr0 & X86_CR0_PE))
enter_rmode(vcpu);

#ifdef CONFIG_X86_64
if (vcpu->shadow_efer & EFER_LME) {
- if (!is_paging(vcpu) && (cr0 & CR0_PG_MASK))
+ if (!is_paging(vcpu) && (cr0 & X86_CR0_PG))
enter_lmode(vcpu);
- if (is_paging(vcpu) && !(cr0 & CR0_PG_MASK))
+ if (is_paging(vcpu) && !(cr0 & X86_CR0_PG))
exit_lmode(vcpu);
}
#endif
@@ -1022,14 +1022,14 @@ static void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
(cr0 & ~KVM_GUEST_CR0_MASK) | KVM_VM_CR0_ALWAYS_ON);
vcpu->cr0 = cr0;

- if (!(cr0 & CR0_TS_MASK) || !(cr0 & CR0_PE_MASK))
+ if (!(cr0 & X86_CR0_TS) || !(cr0 & X86_CR0_PE))
vmx_fpu_activate(vcpu);
}

static void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
{
vmcs_writel(GUEST_CR3, cr3);
- if (vcpu->cr0 & CR0_PE_MASK)
+ if (vcpu->cr0 & X86_CR0_PE)
vmx_fpu_deactivate(vcpu);
}

@@ -1778,7 +1778,7 @@ static int handle_cr(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
case 2: /* clts */
vcpu_load_rsp_rip(vcpu);
vmx_fpu_deactivate(vcpu);
- vcpu->cr0 &= ~CR0_TS_MASK;
+ vcpu->cr0 &= ~X86_CR0_TS;
vmcs_writel(CR0_READ_SHADOW, vcpu->cr0);
vmx_fpu_activate(vcpu);
skip_emulated_instruction(vcpu);
--
1.5.3