Messages in this thread Patch in this message | | | From | Vincent Chen <> | Subject | [PATCH 2/2] riscv: Make __fstate_clean() can work correctly. | Date | Thu, 8 Aug 2019 15:58:41 +0800 |
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Make the __fstate_clean() function can correctly set the state of sstatus.FS in pt_regs to SR_FS_CLEAN.
Tested on both QEMU and HiFive Unleashed using BBL + Linux.
Signed-off-by: Vincent Chen <vincent.chen@sifive.com> --- 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 d5fe573..544f99a 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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