* [PATCH] x86/emul: Remove ops->{read,write}_segment checks for swapgs
@ 2026-04-08 8:34 Teddy Astie
2026-04-08 8:39 ` Andrew Cooper
0 siblings, 1 reply; 2+ messages in thread
From: Teddy Astie @ 2026-04-08 8:34 UTC (permalink / raw)
To: xen-devel; +Cc: Teddy Astie, Jan Beulich, Andrew Cooper, Roger Pau Monné
Remove these checks now that we don't use these 2 ops anymore.
Amends: 4bedbe47eef4f ("x86/emul: Remove fallback path from SWAPGS")
Signed-off-by: Teddy Astie <teddy.astie@vates.tech>
---
xen/arch/x86/x86_emulate/0f01.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/xen/arch/x86/x86_emulate/0f01.c b/xen/arch/x86/x86_emulate/0f01.c
index 54bd6faf0f..4d36c7d289 100644
--- a/xen/arch/x86/x86_emulate/0f01.c
+++ b/xen/arch/x86/x86_emulate/0f01.c
@@ -187,8 +187,7 @@ int x86emul_0f01(struct x86_emulate_state *s,
case 0xf8: /* swapgs */
generate_exception_if(!mode_64bit(), X86_EXC_UD);
generate_exception_if(!mode_ring0(), X86_EXC_GP, 0);
- fail_if(!ops->read_segment || !ops->read_msr ||
- !ops->write_segment || !ops->write_msr);
+ fail_if(!ops->read_msr || !ops->write_msr);
if ( (rc = ops->read_msr(MSR_GS_BASE, &sreg.base,
ctxt)) != X86EMUL_OKAY ||
(rc = ops->read_msr(MSR_SHADOW_GS_BASE, &msr_val,
--
2.53.0
--
Teddy Astie | Vates XCP-ng Developer
XCP-ng & Xen Orchestra - Vates solutions
web: https://vates.tech
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2026-04-08 8:34 [PATCH] x86/emul: Remove ops->{read,write}_segment checks for swapgs Teddy Astie
2026-04-08 8:39 ` Andrew Cooper
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