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KVM: report 1GB page support to userspace

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If userspace knows that the kernel part supports 1GB pages it can enable
the corresponding cpuid bit so that guests actually use GB pages.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel
2009-07-27 16:30:48 +02:00
committed by Avi Kivity
parent 04326caacf
commit 344f414fa0
4 changed files with 16 additions and 1 deletions
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6
arch/x86/kvm/svm.c
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@@ -2754,6 +2754,11 @@ static const struct trace_print_flags svm_exit_reasons_str[] = {
{ -1, NULL }
};
static bool svm_gb_page_enable(void)
{
return true;
}
static struct kvm_x86_ops svm_x86_ops = {
.cpu_has_kvm_support = has_svm,
.disabled_by_bios = is_disabled,
@@ -2817,6 +2822,7 @@ 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,
};
static int __init svm_init(void)