Re: [PATCH 0/4 v2] x86: entry_64.S: steps towards simpler iret frame handling
From: Ingo Molnar
Date: Tue Mar 10 2015 - 02:00:24 EST
* Denys Vlasenko <dvlasenk@xxxxxxxxxx> 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: '?
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