Re: [PATCH v1 1/8] x86/entry/clearregs: Remove partial stack frame in fast system call

[Josh Poimboeuf]

On Tue, Jan 09, 2018 at 05:03:21PM -0800, Andi Kleen wrote:
> From: Andi Kleen <ak@xxxxxxxxxxxxxxx>
> 
> Remove the partial stack frame in the 64bit syscall fast path.
> In the next patch we want to clear the extra registers, which requires
> to always save all registers. So remove the partial stack frame
> in the syscall fast path and always save everything.
> 
> This actually simplifies the code because the ptregs stubs
> are not needed anymore.
> 
> arch/x86/entry/entry_64.S   | 57 ++++-----------------------------------------------------
> arch/x86/entry/syscall_64.c |  2 +-

This diffstat doesn't need to be in the changelog.

-- 
Josh