9bbafce2ee
Presently with preempt enabled there's the possibility to be preempted after the TIF_USEDFPU test and the register save, leading to bogus state post-__switch_to(). Use an explicit preempt_disable()/enable() pair around unlazy_fpu()/clear_fpu() to avoid this. Follows the x86 change. Reported-by: Takuo Koguchi <takuo.koguchi.sw@hitachi.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
#ifndef __ASM_SH_PROCESSOR_H
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#define __ASM_SH_PROCESSOR_H
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#include <asm/cpu-features.h>
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#ifndef __ASSEMBLY__
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/*
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* CPU type and hardware bug flags. Kept separately for each CPU.
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*
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* Each one of these also needs a CONFIG_CPU_SUBTYPE_xxx entry
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* in arch/sh/mm/Kconfig, as well as an entry in arch/sh/kernel/setup.c
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* for parsing the subtype in get_cpu_subtype().
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*/
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enum cpu_type {
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/* SH-2 types */
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CPU_SH7619,
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/* SH-2A types */
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CPU_SH7203, CPU_SH7206, CPU_SH7263,
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/* SH-3 types */
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CPU_SH7705, CPU_SH7706, CPU_SH7707,
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CPU_SH7708, CPU_SH7708S, CPU_SH7708R,
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CPU_SH7709, CPU_SH7709A, CPU_SH7710, CPU_SH7712,
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CPU_SH7720, CPU_SH7721, CPU_SH7729,
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/* SH-4 types */
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CPU_SH7750, CPU_SH7750S, CPU_SH7750R, CPU_SH7751, CPU_SH7751R,
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CPU_SH7760, CPU_SH4_202, CPU_SH4_501,
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/* SH-4A types */
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CPU_SH7763, CPU_SH7770, CPU_SH7780, CPU_SH7781, CPU_SH7785, CPU_SHX3,
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/* SH4AL-DSP types */
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CPU_SH7343, CPU_SH7722, CPU_SH7366,
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/* SH-5 types */
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CPU_SH5_101, CPU_SH5_103,
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/* Unknown subtype */
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CPU_SH_NONE
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};
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/* Forward decl */
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struct sh_cpuinfo;
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/* arch/sh/kernel/setup.c */
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const char *get_cpu_subtype(struct sh_cpuinfo *c);
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#ifdef CONFIG_VSYSCALL
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int vsyscall_init(void);
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#else
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#define vsyscall_init() do { } while (0)
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#endif
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#endif /* __ASSEMBLY__ */
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#ifdef CONFIG_SUPERH32
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# include "processor_32.h"
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#else
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# include "processor_64.h"
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#endif
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#endif /* __ASM_SH_PROCESSOR_H */
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