Commit-ID: 47c2f292cc8669f70644a949cadd5fa5ee0e0e07 Gitweb: http://git.kernel.org/tip/47c2f292cc8669f70644a949cadd5fa5ee0e0e07 Author: Fenghua Yu <fenghua...@intel.com> AuthorDate: Thu, 29 May 2014 11:12:42 -0700 Committer: H. Peter Anvin <h...@linux.intel.com> 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...@intel.com> Link: http://lkml.kernel.org/r/1401387164-43416-15-git-send-email-fenghua...@intel.com Signed-off-by: H. Peter Anvin <h...@linux.intel.com> --- 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-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
