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[PATCH 3/3] xen/arm: gic-v3: Use vsize instead of csize for virtual CPU interface
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Michal Orzel <michal.orzel@xxxxxxx>
- Date: Thu, 9 Apr 2026 13:39:34 +0200
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- Cc: Michal Orzel <michal.orzel@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Thu, 09 Apr 2026 11:39:55 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
gicv3_iomem_deny_access() incorrectly uses csize (physical CPU
interface size) instead of vsize (virtual CPU interface size) when
calculating the number of pages to deny for the virtual CPU interface
region at vbase.
Fixes: 8300b3377e ("arm/gic: Add a new callback to deny Dom0 access to GIC
regions")
Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>
---
xen/arch/arm/gic-v3.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c
index b3e104ea4ad0..5641ee870f23 100644
--- a/xen/arch/arm/gic-v3.c
+++ b/xen/arch/arm/gic-v3.c
@@ -1631,7 +1631,7 @@ static int gicv3_iomem_deny_access(struct domain *d)
if ( vbase != INVALID_PADDR )
{
mfn = vbase >> PAGE_SHIFT;
- nr = PFN_UP(csize);
+ nr = PFN_UP(vsize);
return iomem_deny_access(d, mfn, mfn + nr - 1);
}
--
2.43.0
|
