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KVM: x86: Rename gb_page_enable() to get_lpage_level() in kvm_x86_ops

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Then the callback can provide the maximum supported large page level, which
is more flexible.

Also move the gb page support into x86_64 specific.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Sheng Yang 2010-01-05 19:02:27 +08:00 committed by Marcelo Tosatti
parent c9c5417455
commit 17cc393596
4 changed files with 10 additions and 8 deletions
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2
arch/x86/include/asm/kvm_host.h
View file

@ -528,7 +528,7 @@ struct kvm_x86_ops {
int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
int (*get_tdp_level)(void);
u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
bool (*gb_page_enable)(void);
int (*get_lpage_level)(void);
bool (*rdtscp_supported)(void);
const struct trace_print_flags *exit_reasons_str;

6
arch/x86/kvm/svm.c
View file

@ -2911,9 +2911,9 @@ static const struct trace_print_flags svm_exit_reasons_str[] = {
{ -1, NULL }
};
static bool svm_gb_page_enable(void)
static int svm_get_lpage_level(void)
{
return true;
return PT_PDPE_LEVEL;
}
static bool svm_rdtscp_supported(void)
@ -2986,7 +2986,7 @@ static struct kvm_x86_ops svm_x86_ops = {
.get_mt_mask = svm_get_mt_mask,
.exit_reasons_str = svm_exit_reasons_str,
.gb_page_enable = svm_gb_page_enable,
.get_lpage_level = svm_get_lpage_level,
.cpuid_update = svm_cpuid_update,

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

@ -4036,9 +4036,9 @@ static const struct trace_print_flags vmx_exit_reasons_str[] = {
#undef _ER
static bool vmx_gb_page_enable(void)
static int vmx_get_lpage_level(void)
{
return false;
return PT_DIRECTORY_LEVEL;
}
static inline u32 bit(int bitno)
@ -4131,7 +4131,7 @@ static struct kvm_x86_ops vmx_x86_ops = {
.get_mt_mask = vmx_get_mt_mask,
.exit_reasons_str = vmx_exit_reasons_str,
.gb_page_enable = vmx_gb_page_enable,
.get_lpage_level = vmx_get_lpage_level,
.cpuid_update = vmx_cpuid_update,

4
arch/x86/kvm/x86.c
View file

@ -1641,10 +1641,12 @@ static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
u32 index, int *nent, int maxnent)
{
unsigned f_nx = is_efer_nx() ? F(NX) : 0;
unsigned f_gbpages = kvm_x86_ops->gb_page_enable() ? F(GBPAGES) : 0;
#ifdef CONFIG_X86_64
unsigned f_gbpages = (kvm_x86_ops->get_lpage_level() == PT_PDPE_LEVEL)
? F(GBPAGES) : 0;
unsigned f_lm = F(LM);
#else
unsigned f_gbpages = 0;
unsigned f_lm = 0;
#endif
unsigned f_rdtscp = kvm_x86_ops->rdtscp_supported() ? F(RDTSCP) : 0;