Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Vincent Chen <> | Subject | [PATCH v2 2/2] riscv: Make __fstate_clean() work correctly. | Date | Wed, 14 Aug 2019 16:23:53 +0800 |
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Make the __fstate_clean() function correctly set the state of sstatus.FS in pt_regs to SR_FS_CLEAN.
Fixes: 7db91e5 ("RISC-V: Task implementation") Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Vincent Chen <vincent.chen@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
--- arch/riscv/include/asm/switch_to.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/include/asm/switch_to.h b/arch/riscv/include/asm/switch_to.h index 0575b8a..0aa5b94 100644 --- a/arch/riscv/include/asm/switch_to.h +++ b/arch/riscv/include/asm/switch_to.h @@ -16,7 +16,7 @@ extern void __fstate_restore(struct task_struct *restore_from); static inline void __fstate_clean(struct pt_regs *regs) { - regs->sstatus |= (regs->sstatus & ~(SR_FS)) | SR_FS_CLEAN; + regs->sstatus = (regs->sstatus & ~SR_FS) | SR_FS_CLEAN; } static inline void fstate_off(struct task_struct *task, -- 2.7.4
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