Messages in this thread | | | Date | Mon, 23 Mar 2015 10:18:15 -0400 | From | Steven Rostedt <> | Subject | Re: [PATCH 1/2] x86: stop using PER_CPU_VAR(kernel_stack) |
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On Sat, 21 Mar 2015 21:44:37 +0100 Denys Vlasenko <dvlasenk@redhat.com> wrote:
> Instead of PER_CPU_VAR(kernel_stack), 64-bit code > can use PER_CPU_VAR(cpu_tss + TSS_sp0).
The change log here is lacking an answer to "why". It only states what it does. What's wrong with using kernel_stack? The change log should explicitly state that. I have no idea why this patch is needed.
-- Steve
> > 32-bit code switches to PER_CPU_VAR(cpu_current_top_of_stack), > which has the same value. >
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