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[XEN][PATCH v2 2/3] x86/hvm: vmx: account for SHADOW_PAGING when use hvm_shadow_handle_cd()
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Grygorii Strashko <grygorii_strashko@xxxxxxxx>
- Date: Fri, 7 Nov 2025 15:05:00 +0000
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- Cc: Grygorii Strashko <grygorii_strashko@xxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Jason Andryuk <jason.andryuk@xxxxxxx>, Teddy Astie <teddy.astie@xxxxxxxxxx>
- Delivery-date: Fri, 07 Nov 2025 15:05:06 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHcT/fjhmbe8yBr3kSMWLJqeXgjQQ==
- Thread-topic: [XEN][PATCH v2 2/3] x86/hvm: vmx: account for SHADOW_PAGING when use hvm_shadow_handle_cd()
From: Grygorii Strashko <grygorii_strashko@xxxxxxxx>
The hvm_shadow_handle_cd() can be used only with SHADOW_PAGING=y, so guard
hvm_shadow_handle_cd() call with paging_mode_shadow() which accounts for
SHADOW_PAGING state.
bloat-o-meter
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-290 (-290)
Suggested-by: Jan Beulich <jbeulich@xxxxxxxx>
Signed-off-by: Grygorii Strashko <grygorii_strashko@xxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
changes in v2:
- s/!paging_mode_hap()/paging_mode_shadow()
xen/arch/x86/hvm/vmx/vmx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c
index d7efd0a73add..67861bc8bccf 100644
--- a/xen/arch/x86/hvm/vmx/vmx.c
+++ b/xen/arch/x86/hvm/vmx/vmx.c
@@ -1514,7 +1514,7 @@ static void hvm_shadow_handle_cd(struct vcpu *v, unsigned
long value)
static void cf_check vmx_handle_cd(struct vcpu *v, unsigned long value)
{
- if ( !paging_mode_hap(v->domain) )
+ if ( paging_mode_shadow(v->domain) )
{
/*
* For shadow, 'load IA32_PAT' VM-entry control is 0, so it cannot
--
2.34.1
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