Re: [PATCH 0/4 v2] x86: entry_64.S: steps towards simpler iret frame handling

From: Ingo Molnar <mingo@kernel.org>
To: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
	Oleg Nesterov <oleg@redhat.com>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Alexei Starovoitov <ast@plumgrid.com>,
	Will Drewry <wad@chromium.org>, Kees Cook <keescook@chromium.org>,
	x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/4 v2] x86: entry_64.S: steps towards simpler iret frame handling
Date: Tue, 10 Mar 2015 07:00:13 +0100	[thread overview]
Message-ID: <20150310060013.GA13704@gmail.com> (raw)
In-Reply-To: <1425926364-9526-1-git-send-email-dvlasenk@redhat.com>

* Denys Vlasenko <dvlasenk@redhat.com> wrote:

> These changes make SYSENTER64 code path save flags and user's
> stack pointer in pt_regs->flags and pt_regs->sp, where they belong.
> 
> As a result, we can drop stub_iopl() and thread_struct::usersp.
> 
> Usage of PER_CPU(old_rsp) is reduced to bare minimum.
> 
> FIXUP/RESTORE_TOP_OF_STACK macros are on diet too.
> 
> Changes since v1: on Ingo's request, split into 4 patches intead of 2.

Unfortunately I got only 1/4 and 3/4, the other two patches are 
missing. They are not in my lkml and spam folders either.

Note that the missing mails:

> Denys Vlasenko (4):
>   x86: save r11 into pt_regs->flags on SYSCALL64 fastpath
>   Remove stub_iopl
>   x86: save user %rsp in pt_regs->sp on SYSCALL64 fastpath
>   Remove unused stuff

2/4 and 4/4 Have rather short titles, so maybe some spam trap ate 
them? Prefix them with 'x86: '?

Weird.

Thanks,

	Ingo