Re: [PATCH 1/2] x86: stop using PER_CPU_VAR(kernel_stack)

From: Borislav Petkov
Date: Mon Mar 23 2015 - 13:16:32 EST


On Mon, Mar 23, 2015 at 06:10:01PM +0100, Denys Vlasenko wrote:
> We want to get rid of kernel_stack, since it is redundant:
> in 64-bits, PER_CPU_VAR(cpu_tss + TSS_sp0) can be used instead,
> in 32-bits, PER_CPU_VAR(cpu_current_top_of_stack) can be used instead.

We probably should have a macro unifying those on both bitness.
Especially 64-bit is really non-telling - I can't really deduce from
"cpu_tss + TSS_sp0" that it is the kernel stack ptr.

Thanks.

--
Regards/Gruss,
Boris.

ECO tip #101: Trim your mails when you reply.
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