Re: [PATCH for 4.4.y] x86/vdso: Fix lsl operand order

[Greg KH <greg@kroah.com>]

On Wed, Apr 08, 2020 at 05:24:30PM +0900, Nobuhiro Iwamatsu wrote:
> From: Samuel Neves <sneves@dei.uc.pt>
> 
> commit e78e5a91456fcecaa2efbb3706572fe043766f4d upstream.
> 
> In the __getcpu function, lsl is using the wrong target and destination
> registers. Luckily, the compiler tends to choose %eax for both variables,
> so it has been working so far.
> 
> Fixes: a582c540ac1b ("x86/vdso: Use RDPID in preference to LSL when available")
> Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> Acked-by: Andy Lutomirski <luto@kernel.org>
> Cc: stable@vger.kernel.org
> Link: https://lkml.kernel.org/r/20180901201452.27828-1-sneves@dei.uc.pt
> Signed-off-by: Nobuhiro Iwamatsu (CIP) <nobuhiro1.iwamatsu@toshiba.co.jp>
> ---
>  arch/x86/include/asm/vgtod.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

What about 4.9?  I can't take a patch for 4.4 without also it being in
newer kernels.

ANd always cc: all the people involved in a patch, let them have a say
if this is ok or not.

Please fix up and resend for both trees.

thanks,

greg k-h