Re: [PATCH 4/4] x86/asm/entry/32: Use PUSH instructions to build pt_regs on stack

From: Ingo Molnar
Date: Fri Mar 27 2015 - 08:17:32 EST



* Denys Vlasenko <dvlasenk@xxxxxxxxxx> wrote:

> On 03/27/2015 12:32 PM, Ingo Molnar wrote:
> >
> > * Denys Vlasenko <dvlasenk@xxxxxxxxxx> wrote:
> >
> >> This mimics the recent similar 64-bit change.
> >> Saves ~110 bytes of code.
> >
> > Would be nice to know whether you tested all the affected system entry
> > variants, on both AMD and Intel CPUs?
>
> Yes, I did. I also looked at the diff of entry_64.o disassembly, to have
> a different view of the changes.

That kind of information needs to be in the changelog.

> I know how fragile this stuff is.

yeah ...

Thanks,

Ingo
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