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| author | Andy Lutomirski <luto@kernel.org> | 2016-12-09 10:24:05 -0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-12-19 11:54:20 +0100 |
| commit | 1c52d859cb2d417e7216d3e56bb7fea88444cec9 (patch) | |
| tree | f67d4ee216a13d8666ea81e0f0a527a3cc16746a /arch/x86 | |
| parent | 3df8d9208569ef0b2313e516566222d745f3b94b (diff) | |
| download | linux-0-day-1c52d859cb2d417e7216d3e56bb7fea88444cec9.tar.gz linux-0-day-1c52d859cb2d417e7216d3e56bb7fea88444cec9.tar.xz | |
x86/asm/32: Make sync_core() handle missing CPUID on all 32-bit kernels
We support various non-Intel CPUs that don't have the CPUID
instruction, so the M486 test was wrong. For now, fix it with a big
hammer: handle missing CPUID on all 32-bit CPUs.
Reported-by: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Juergen Gross <jgross@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Matthew Whitehead <tedheadster@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: xen-devel <Xen-devel@lists.xen.org>
Link: http://lkml.kernel.org/r/685bd083a7c036f7769510b6846315b17d6ba71f.1481307769.git.luto@kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 6aa741fbe1df0..b934871ae2269 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -607,7 +607,7 @@ static inline void sync_core(void) { int tmp; -#ifdef CONFIG_M486 +#ifdef CONFIG_X86_32 /* * Do a CPUID if available, otherwise do a jump. The jump * can conveniently enough be the jump around CPUID. |