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KVM: VMX: Remove vmcs_config.order

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The maximum size of a VMCS (or VMXON region) is 4096. By definition,
these are order 0 allocations.

Signed-off-by: Jim Mattson <jmattson@google.com>
Message-Id: <20220125004359.147600-1-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jim Mattson 2022-01-24 16:43:59 -08:00 committed by Paolo Bonzini
parent d081a343dd
commit 519669cc58
2 changed files with 2 additions and 4 deletions
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1
arch/x86/kvm/vmx/capabilities.h
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@ -54,7 +54,6 @@ struct nested_vmx_msrs {
struct vmcs_config {
int size;
int order;
u32 basic_cap;
u32 revision_id;
u32 pin_based_exec_ctrl;

5
arch/x86/kvm/vmx/vmx.c
View File

@ -2603,7 +2603,6 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
return -EIO;
vmcs_conf->size = vmx_msr_high & 0x1fff;
vmcs_conf->order = get_order(vmcs_conf->size);
vmcs_conf->basic_cap = vmx_msr_high & ~0x1fff;
vmcs_conf->revision_id = vmx_msr_low;
@ -2628,7 +2627,7 @@ struct vmcs *alloc_vmcs_cpu(bool shadow, int cpu, gfp_t flags)
struct page *pages;
struct vmcs *vmcs;
pages = __alloc_pages_node(node, flags, vmcs_config.order);
pages = __alloc_pages_node(node, flags, 0);
if (!pages)
return NULL;
vmcs = page_address(pages);
@ -2647,7 +2646,7 @@ struct vmcs *alloc_vmcs_cpu(bool shadow, int cpu, gfp_t flags)
void free_vmcs(struct vmcs *vmcs)
{
free_pages((unsigned long)vmcs, vmcs_config.order);
free_page((unsigned long)vmcs);
}
/*