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From: Jan Beulich <jbeulich@suse.com>
Subject: x86/shadow: correct an inverted conditional in dirty VRAM tracking
This originally was "mfn_x(mfn) == INVALID_MFN". Make it like this
again, taking the opportunity to also drop the unnecessary nearby
braces.
This is XSA-319.
Fixes: 246a5a3377c2 ("xen: Use a typesafe to define INVALID_MFN")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
--- a/xen/arch/x86/mm/shadow/common.c
+++ b/xen/arch/x86/mm/shadow/common.c
@@ -3252,10 +3252,8 @@ int shadow_track_dirty_vram(struct domai
int dirty = 0;
paddr_t sl1ma = dirty_vram->sl1ma[i];
- if ( !mfn_eq(mfn, INVALID_MFN) )
- {
+ if ( mfn_eq(mfn, INVALID_MFN) )
dirty = 1;
- }
else
{
page = mfn_to_page(mfn);
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