lkml.org 
[lkml]   [2019]   [Aug]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.19 25/85] riscv: Make __fstate_clean() work correctly.
Date
From: Vincent Chen <vincent.chen@sifive.com>

commit 69703eb9a8ae28a46cd5bce7d69ceeef6273a104 upstream.

Make the __fstate_clean() function correctly set the
state of sstatus.FS in pt_regs to SR_FS_CLEAN.

Fixes: 7db91e57a0acd ("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>
[paul.walmsley@sifive.com: expanded "Fixes" commit ID]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
arch/riscv/include/asm/switch_to.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/riscv/include/asm/switch_to.h
+++ b/arch/riscv/include/asm/switch_to.h
@@ -23,7 +23,7 @@ extern void __fstate_restore(struct task

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_save(struct task_struct *task,

\
 
 \ /
  Last update: 2019-08-22 19:56    [W:0.279 / U:0.124 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site