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| author | Heiko Carstens <hca@linux.ibm.com> | 2024-02-03 11:45:09 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-02-16 14:30:15 +0100 |
| commit | 419abc4d3828813b58d047da146f519eedaa395b (patch) | |
| tree | b358423efb377ffd2c050aab1ab2e41740ba44ab /arch/s390/include/asm/processor.h | |
| parent | 918c7cad66509c2170e38a088550fb4a525e0878 (diff) | |
| download | linux-419abc4d3828813b58d047da146f519eedaa395b.tar.gz linux-419abc4d3828813b58d047da146f519eedaa395b.tar.bz2 linux-419abc4d3828813b58d047da146f519eedaa395b.zip | |
s390/fpu: convert FPU CIF flag to regular TIF flag
The FPU state, as represented by the CIF_FPU flag reflects the FPU state of
a task, not the CPU it is running on. Therefore convert the flag to a
regular TIF flag.
This removes the magic in switch_to() where a save_fpu_regs() call for the
currently (previous) running task sets the per-cpu CIF_FPU flag, which is
required to restore FPU register contents of the next task, when it returns
to user space.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/processor.h')
| -rw-r--r-- | arch/s390/include/asm/processor.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index a422a2cf9d05..f25617cbc49e 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -15,13 +15,11 @@ #include <linux/bits.h> #define CIF_NOHZ_DELAY 2 /* delay HZ disable for a tick */ -#define CIF_FPU 3 /* restore FPU registers */ #define CIF_ENABLED_WAIT 5 /* in enabled wait state */ #define CIF_MCCK_GUEST 6 /* machine check happening in guest */ #define CIF_DEDICATED_CPU 7 /* this CPU is dedicated */ #define _CIF_NOHZ_DELAY BIT(CIF_NOHZ_DELAY) -#define _CIF_FPU BIT(CIF_FPU) #define _CIF_ENABLED_WAIT BIT(CIF_ENABLED_WAIT) #define _CIF_MCCK_GUEST BIT(CIF_MCCK_GUEST) #define _CIF_DEDICATED_CPU BIT(CIF_DEDICATED_CPU) |