From 940185910f9821226c673d3ee5535afab31b9865 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 28 Jul 2020 12:56:26 +0300 Subject: [PATCH] x86: call32: Append appropriate suffixes 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 Reviewed-by: Bin Meng --- 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 e185b9a42b..e641e781c0 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