Re: [PATCH v4 09/18] x86/static_call: Add out-of-line static call implementation

[Peter Zijlstra]

On Fri, May 01, 2020 at 10:28:58PM +0200, Peter Zijlstra wrote:

> +#define ARCH_DEFINE_STATIC_CALL_TRAMP(name, func)                    \
> +     asm(".pushsection .text, \"ax\"                         \n"     \
> +         ".align 4                                           \n"     \
> +         ".globl " STATIC_CALL_TRAMP_STR(name) "             \n"     \
> +         STATIC_CALL_TRAMP_STR(name) ":                      \n"     \
> +         "   jmp.d32 " #func "                               \n"     \

I remembered Nick asked this to be .byte 0xe9; .long #func - (.+4); last
time, now done.

> +         ".type " STATIC_CALL_TRAMP_STR(name) ", @function   \n"     \
> +         ".size " STATIC_CALL_TRAMP_STR(name) ", . - " 
> STATIC_CALL_TRAMP_STR(name) " \n" \
> +         ".popsection                                        \n")