Commit-ID: 47c2f292cc8669f70644a949cadd5fa5ee0e0e07
Gitweb: http://git.kernel.org/tip/47c2f292cc8669f70644a949cadd5fa5ee0e0e07
Author: Fenghua Yu <fenghua.yu@xxxxxxxxx>
AuthorDate: Thu, 29 May 2014 11:12:42 -0700
Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Thu, 29 May 2014 14:33:06 -0700
x86/xsaves: Call booting time xsaves and xrstors in setup_init_fpu_buf
setup_init_fpu_buf() calls booting time xsaves and xrstors to save and restore
xstate in xsave area.
Signed-off-by: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1401387164-43416-15-git-send-email-fenghua.yu@xxxxxxxxx
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
---
arch/x86/kernel/xsave.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
index a4b451c..8fa7c7d 100644
--- a/arch/x86/kernel/xsave.c
+++ b/arch/x86/kernel/xsave.c
@@ -496,15 +496,21 @@ static void __init setup_init_fpu_buf(void)
setup_xstate_features();
+ if (cpu_has_xsaves) {
+ init_xstate_buf->xsave_hdr.xcomp_bv =
+ (u64)1 << 63 | pcntxt_mask;
+ init_xstate_buf->xsave_hdr.xstate_bv = pcntxt_mask;
+ }
+
/*
* Init all the features state with header_bv being 0x0
*/
- xrstor_state(init_xstate_buf, -1);
+ xrstor_state_booting(init_xstate_buf, -1);
/*
* Dump the init state again. This is to identify the init state
* of any feature which is not represented by all zero's.
*/
- xsave_state(init_xstate_buf, -1);
+ xsave_state_booting(init_xstate_buf, -1);
}
static enum { AUTO, ENABLE, DISABLE } eagerfpu = AUTO;
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|