x86/traps: Annotate {l,c}star_enter() as nocall

[PATCH] x86/traps: Annotate {l,c}star_enter() as nocall

Andrew Cooper posted 1 patch 2 months, 3 weeks ago

Download mbox

Patches applied successfully (tree, apply log)
git fetch https://gitlab.com/xen-project/patchew/xen tags/patchew/20240130150839.4130909-1-andrew.cooper3@citrix.com

xen/arch/x86/x86_64/traps.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

Expand all Fold all

[PATCH] x86/traps: Annotate {l,c}star_enter() as nocall

Posted by Andrew Cooper 2 months, 3 weeks ago

... as with other declarations which aren't legal to call from C.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: Jan Beulich <JBeulich@suse.com>
CC: Roger Pau Monné <roger.pau@citrix.com>
CC: Wei Liu <wl@xen.org>
---
 xen/arch/x86/x86_64/traps.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/x86_64/traps.c b/xen/arch/x86/x86_64/traps.c
index 668605e5bc67..02fdb3637d09 100644
--- a/xen/arch/x86/x86_64/traps.c
+++ b/xen/arch/x86/x86_64/traps.c
@@ -333,8 +333,8 @@ static unsigned int write_stub_trampoline(
 
 DEFINE_PER_CPU(struct stubs, stubs);
 
-void lstar_enter(void);
-void cstar_enter(void);
+void nocall lstar_enter(void);
+void nocall cstar_enter(void);
 
 void subarch_percpu_traps_init(void)
 {

base-commit: 4a7e71aa085170f1a13976507c8e248f8715f116
prerequisite-patch-id: 897f8a9f53b9c95c7961be1793b2685c11dc6e50
-- 
2.30.2

Re: [PATCH] x86/traps: Annotate {l,c}star_enter() as nocall

Posted by Jan Beulich 2 months, 3 weeks ago

On 30.01.2024 16:08, Andrew Cooper wrote:
> ... as with other declarations which aren't legal to call from C.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>

Acked-by: Jan Beulich <jbeulich@suse.com>