Commit 36a49803 authored by Paul Burton's avatar Paul Burton

MIPS: Avoid FCSR sanitization when CONFIG_MIPS_FP_SUPPORT=n

When CONFIG_MIPS_FP_SUPPORT=n we don't support floating point, so we
don't need to worry about floating point exceptions pending in the
Floating point Control & Status Register (FCSR) during switch_to(). Stub
out the __sanitize_fcr31() macro in this case.
Signed-off-by: default avatarPaul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/21010/
Cc: linux-mips@linux-mips.org
parent ea6a3737
......@@ -84,7 +84,8 @@ do { \
* Check FCSR for any unmasked exceptions pending set with `ptrace',
* clear them and send a signal.
*/
#define __sanitize_fcr31(next) \
#ifdef CONFIG_MIPS_FP_SUPPORT
# define __sanitize_fcr31(next) \
do { \
unsigned long fcr31 = mask_fcr31_x(next->thread.fpu.fcr31); \
void __user *pc; \
......@@ -95,6 +96,9 @@ do { \
force_fcr31_sig(fcr31, pc, next); \
} \
} while (0)
#else
# define __sanitize_fcr31(next)
#endif
/*
* For newly created kernel threads switch_to() will return to
......
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