Re: [PATCH] x86: use invd instead of wbinvd in real mode start code

On Wed, Jan 8, 2020 at 7:09 PM Masahiro Yamada masahiroy@kernel.org wrote:

I do not know why the boot code immediately after the system reset should write-back the cache content. I think the cache invalidation should be enough.

I tested this commit with qemu-x86_defconfig, and it worked for me.

Signed-off-by: Masahiro Yamada masahiroy@kernel.org

arch/x86/cpu/start.S | 2 +- arch/x86/cpu/start16.S | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Bin Meng bmeng.cn@gmail.com Tested-by: Bin Meng bmeng.cn@gmail.com