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    x86/entry: Stop using PER_CPU_VAR(kernel_stack) · 63332a84
    Denys Vlasenko 提交于
    PER_CPU_VAR(kernel_stack) is redundant:
    
      - On the 64-bit build, we can use PER_CPU_VAR(cpu_tss + TSS_sp0).
      - On the 32-bit build, we can use PER_CPU_VAR(cpu_current_top_of_stack).
    
    PER_CPU_VAR(kernel_stack) will be deleted by a separate change.
    Signed-off-by: NDenys Vlasenko <dvlasenk@redhat.com>
    Cc: Alexei Starovoitov <ast@plumgrid.com>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Andy Lutomirski <luto@amacapital.net>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    Cc: H. Peter Anvin <hpa@zytor.com>
    Cc: Kees Cook <keescook@chromium.org>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Oleg Nesterov <oleg@redhat.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Will Drewry <wad@chromium.org>
    Link: http://lkml.kernel.org/r/1429889495-27850-1-git-send-email-dvlasenk@redhat.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
    63332a84
xen-asm_64.S 3.1 KB