lkml.org 
[lkml]   [2021]   [Jun]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
Subject[PATCH 5/7] KVM: VMX: Refactor 32-bit PSE PT creation to avoid using MMU macro
From
Compute the number of PTEs to be filled for the 32-bit PSE page tables
using the page size and the size of each entry. While using the MMU's
PT32_ENT_PER_PAGE macro is arguably better in isolation, removing VMX's
usage will allow a future namespacing cleanup to move the guest page
table macros into paging_tmpl.h, out of the reach of code that isn't
directly related to shadow paging.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/x86/kvm/vmx/vmx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index ab6f682645d7..f6fa922ca6e3 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -3584,7 +3584,7 @@ static int init_rmode_identity_map(struct kvm *kvm)
}

/* Set up identity-mapping pagetable for EPT in real mode */
- for (i = 0; i < PT32_ENT_PER_PAGE; i++) {
+ for (i = 0; i < (PAGE_SIZE / sizeof(tmp)); i++) {
tmp = (i << 22) + (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |
_PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_PSE);
if (__copy_to_user(uaddr + i * sizeof(tmp), &tmp, sizeof(tmp))) {
--
2.32.0.288.g62a8d224e6-goog
\
 
 \ /
  Last update: 2021-06-24 01:07    [W:0.089 / U:1.040 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site