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KVM: Add kvm_x86_ops get_tdp_level() 

The function get_tdp_level() provided the number of tdp level for EPT and
NPT rather than the NPT specific macro.

Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Sheng Yang 2008-04-25 10:20:22 +08:00 committed by Avi Kivity
parent 8c6d6adc6b
commit 67253af52e
6 changed files with 20 additions and 8 deletions
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4
arch/x86/kvm/mmu.c
View File

@ -1343,7 +1343,7 @@ static int tdp_page_fault(struct kvm_vcpu *vcpu, gva_t gpa,
spin_lock(&vcpu->kvm->mmu_lock);
kvm_mmu_free_some_pages(vcpu);
r = __direct_map(vcpu, gpa, error_code & PFERR_WRITE_MASK,
largepage, gfn, pfn, TDP_ROOT_LEVEL);
largepage, gfn, pfn, kvm_x86_ops->get_tdp_level());
spin_unlock(&vcpu->kvm->mmu_lock);
return r;
@ -1450,7 +1450,7 @@ static int init_kvm_tdp_mmu(struct kvm_vcpu *vcpu)
context->page_fault = tdp_page_fault;
context->free = nonpaging_free;
context->prefetch_page = nonpaging_prefetch_page;
context->shadow_root_level = TDP_ROOT_LEVEL;
context->shadow_root_level = kvm_x86_ops->get_tdp_level();
context->root_hpa = INVALID_PAGE;
if (!is_paging(vcpu)) {

6
arch/x86/kvm/mmu.h
View File

@ -3,12 +3,6 @@
#include <linux/kvm_host.h>
#ifdef CONFIG_X86_64
#define TDP_ROOT_LEVEL PT64_ROOT_LEVEL
#else
#define TDP_ROOT_LEVEL PT32E_ROOT_LEVEL
#endif
#define PT64_PT_BITS 9
#define PT64_ENT_PER_PAGE (1 << PT64_PT_BITS)
#define PT32_PT_BITS 10

10
arch/x86/kvm/svm.c
View File

@ -1863,6 +1863,15 @@ static bool svm_cpu_has_accelerated_tpr(void)
return false;
}
static int get_npt_level(void)
{
#ifdef CONFIG_X86_64
return PT64_ROOT_LEVEL;
#else
return PT32E_ROOT_LEVEL;
#endif
}
static struct kvm_x86_ops svm_x86_ops = {
.cpu_has_kvm_support = has_svm,
.disabled_by_bios = is_disabled,
@ -1920,6 +1929,7 @@ static struct kvm_x86_ops svm_x86_ops = {
.inject_pending_vectors = do_interrupt_requests,
.set_tss_addr = svm_set_tss_addr,
.get_tdp_level = get_npt_level,
};
static int __init svm_init(void)

6
arch/x86/kvm/vmx.c
View File

@ -2788,6 +2788,11 @@ static void __init vmx_check_processor_compat(void *rtn)
}
}
static int get_ept_level(void)
{
return VMX_EPT_DEFAULT_GAW + 1;
}
static struct kvm_x86_ops vmx_x86_ops = {
.cpu_has_kvm_support = cpu_has_kvm_support,
.disabled_by_bios = vmx_disabled_by_bios,
@ -2844,6 +2849,7 @@ static struct kvm_x86_ops vmx_x86_ops = {
.inject_pending_vectors = do_interrupt_requests,
.set_tss_addr = vmx_set_tss_addr,
.get_tdp_level = get_ept_level,
};
static int __init vmx_init(void)

1
arch/x86/kvm/vmx.h
View File

@ -351,5 +351,6 @@ enum vmcs_field {
#define VMX_EPT_EXTENT_INDIVIDUAL_BIT (1ull << 24)
#define VMX_EPT_EXTENT_CONTEXT_BIT (1ull << 25)
#define VMX_EPT_EXTENT_GLOBAL_BIT (1ull << 26)
#define VMX_EPT_DEFAULT_GAW 3
#endif

1
include/asm-x86/kvm_host.h
View File

@ -422,6 +422,7 @@ struct kvm_x86_ops {
struct kvm_run *run);
int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
int (*get_tdp_level)(void);
};
extern struct kvm_x86_ops *kvm_x86_ops;