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| author | Chang S. Bae <chang.seok.bae@intel.com> | 2018-09-18 16:08:55 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-10-08 10:41:09 +0200 |
| commit | 824eea38d239fb2a6027e65e18a5daef23019b00 (patch) | |
| tree | c099332f7e1f12de73d2ef68a59535b18e80d76f /arch | |
| parent | e696c231bebf5f17fe0c5e465c01511320668054 (diff) | |
| download | linux-stable-824eea38d239fb2a6027e65e18a5daef23019b00.tar.gz linux-stable-824eea38d239fb2a6027e65e18a5daef23019b00.tar.bz2 linux-stable-824eea38d239fb2a6027e65e18a5daef23019b00.zip | |
x86/fsgsbase/64: Convert the ELF core dump code to the new FSGSBASE helpers
Replace open-coded rdmsr()'s with their <asm/fsgsbase.h> API
counterparts.
No change in functionality intended.
[ mingo: Wrote new changelog. ]
Based-on-code-from: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Markus T Metzger <markus.t.metzger@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Shankar <ravi.v.shankar@intel.com>
Cc: Rik van Riel <riel@surriel.com>
Link: http://lkml.kernel.org/r/1537312139-5580-5-git-send-email-chang.seok.bae@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/elf.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h index 0d157d2a1e2a..1527ec351036 100644 --- a/arch/x86/include/asm/elf.h +++ b/arch/x86/include/asm/elf.h @@ -10,6 +10,7 @@ #include <asm/ptrace.h> #include <asm/user.h> #include <asm/auxvec.h> +#include <asm/fsgsbase.h> typedef unsigned long elf_greg_t; @@ -205,7 +206,6 @@ void set_personality_ia32(bool); #define ELF_CORE_COPY_REGS(pr_reg, regs) \ do { \ - unsigned long base; \ unsigned v; \ (pr_reg)[0] = (regs)->r15; \ (pr_reg)[1] = (regs)->r14; \ @@ -228,8 +228,8 @@ do { \ (pr_reg)[18] = (regs)->flags; \ (pr_reg)[19] = (regs)->sp; \ (pr_reg)[20] = (regs)->ss; \ - rdmsrl(MSR_FS_BASE, base); (pr_reg)[21] = base; \ - rdmsrl(MSR_KERNEL_GS_BASE, base); (pr_reg)[22] = base; \ + (pr_reg)[21] = x86_fsbase_read_cpu(); \ + (pr_reg)[22] = x86_gsbase_read_cpu_inactive(); \ asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v; \ asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v; \ asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v; \ |