From: Teddy Astie <teddy.astie@vates.tech>
Date: Thu, 17 Apr 2025 14:24:44 +0000 (+0000)
Subject: vmx: Don't open-code vmresume/vmlaunch instructions
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=64cf7a80a17a017a6b88ea17c7f490e42baefcca;p=people%2Fandrewcoop%2Fxen.git

vmx: Don't open-code vmresume/vmlaunch instructions

binutils 2.25 has support for assembling vmresume/vmlaunch
instructions, so we don't need to open-code the byte sequences
for these opcodes anymore.

Signed-off-by: Teddy Astie <teddy.astie@vates.tech>
Acked-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
---

diff --git a/xen/arch/x86/hvm/vmx/entry.S b/xen/arch/x86/hvm/vmx/entry.S
index 6aaeb28a5b..2bfee715b3 100644
--- a/xen/arch/x86/hvm/vmx/entry.S
+++ b/xen/arch/x86/hvm/vmx/entry.S
@@ -21,9 +21,6 @@
 #include <asm/asm_defns.h>
 #include <asm/page.h>
 
-#define VMRESUME     .byte 0x0f,0x01,0xc3
-#define VMLAUNCH     .byte 0x0f,0x01,0xc2
-
 FUNC(vmx_asm_vmexit_handler)
         SAVE_ALL
 
@@ -166,11 +163,11 @@ UNLIKELY_END(realmode)
         jns  .Lvmx_launch
 
 /*.Lvmx_resume:*/
-        VMRESUME
+        vmresume
         jmp  .Lvmx_vmentry_fail
 
 .Lvmx_launch:
-        VMLAUNCH
+        vmlaunch
 
 .Lvmx_vmentry_fail:
         sti