[PATCH v1 2/2] x86: call32: Append appropriate suffixes
Andy Shevchenko
andriy.shevchenko at linux.intel.com
Tue Jul 28 11:56:26 CEST 2020
Assembler is not happy:
arch/x86/cpu/call32.S: Assembler messages:
arch/x86/cpu/call32.S:36: Warning: no instruction mnemonic suffix given and no register operands; using default for `retf'
Fix this by adding appropriate suffixes to the assembler commands.
Fixes: 6f92ed8f1abf ("x86: Add a way to call 32-bit code from 64-bit mode")
Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
---
arch/x86/cpu/call32.S | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/x86/cpu/call32.S b/arch/x86/cpu/call32.S
index e185b9a42b03..e641e781c04c 100644
--- a/arch/x86/cpu/call32.S
+++ b/arch/x86/cpu/call32.S
@@ -32,8 +32,7 @@ cpu_call32:
push %rdi /* 32-bit code segment */
lea compat(%rip), %rax
push %rax
- .byte 0x48 /* REX prefix to force 64-bit far return */
- retf
+ retfq
.code32
compat:
/*
@@ -60,4 +59,4 @@ compat:
/* Jump to the required target */
pushl %edi /* 32-bit code segment */
pushl %esi /* 32-bit target address */
- retf
+ retfl
--
2.27.0
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