On 28 April 2015 at 23:19, Bin Meng <bmeng...@gmail.com> wrote: > On Wed, Apr 29, 2015 at 10:25 AM, Simon Glass <s...@chromium.org> wrote: >> Provide access to this x86 instruction from C code. >> >> Signed-off-by: Simon Glass <s...@chromium.org> >> --- >> >> Changes in v2: >> - Remove unnecessary \t\n after mfence assembler instruction >> >> arch/x86/include/asm/cpu.h | 5 +++++ >> 1 file changed, 5 insertions(+) >> >> diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h >> index c839291..08284ee 100644 >> --- a/arch/x86/include/asm/cpu.h >> +++ b/arch/x86/include/asm/cpu.h >> @@ -151,6 +151,11 @@ static inline int flag_is_changeable_p(uint32_t flag) >> return ((f1^f2) & flag) != 0; >> } >> >> +static inline void mfence(void) >> +{ >> + __asm__ __volatile__("mfence" : : : "memory"); >> +} >> + >> /** >> * cpu_enable_paging_pae() - Enable PAE-paging >> * >> -- > > Reviewed-by: Bin Meng <bmeng...@gmail.com>
Applied to u-boot-x86. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot