Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-30 16:11:38 +00:00
Code Issues Packages Projects Releases Wiki Activity

KVM: x86/mmu: Avoid pointer arithmetic when iterating over SPTEs

Browse Source 
Replace the pointer arithmetic used to iterate over SPTEs in
is_empty_shadow_page() with more standard interger-based iteration.

No functional change intended.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Link: https://lore.kernel.org/r/20230729004722.1056172-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2023-07-28 17:47:14 -07:00 committed by Paolo Bonzini
parent c4f92cfe02
commit 242a6dd8da
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -1692,15 +1692,15 @@ bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
#ifdef MMU_DEBUG
static int is_empty_shadow_page(u64 *spt)
{
u64 *pos;
u64 *end;
int i;
for (pos = spt, end = pos + SPTE_ENT_PER_PAGE; pos != end; pos++)
if (is_shadow_present_pte(*pos)) {
for (i = 0; i < SPTE_ENT_PER_PAGE; i++) {
if (is_shadow_present_pte(spt[i])) {
printk(KERN_ERR "%s: %p %llx\n", __func__,
pos, *pos);
&spt[i], spt[i]);
return 0;
}
}
return 1;
}
#endif