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x86/fpu/xstate: Rename 'xstate_size' to 'fpu_kernel_xstate_size', to distinguish it from 'fpu_user_xstate_size'

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User space uses standard format xsave area. fpstate in signal frame
should have standard format size.

To explicitly distinguish between xstate size in kernel space and the
one in user space, we rename 'xstate_size' to 'fpu_kernel_xstate_size'.

Cleanup only, no change in functionality.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
[ Rebased the patch and cleaned up the naming. ]
Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Ravi V. Shankar <ravi.v.shankar@intel.com>
Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/2ecbae347a5152d94be52adf7d0f3b7305d90d99.1463760376.git.yu-cheng.yu@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Fenghua Yu
2016-05-20 10:47:06 -07:00
committed by Ingo Molnar
parent a1141e0b5c
commit bf15a8cf8d
5 changed files with 21 additions and 18 deletions
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8
arch/x86/kernel/fpu/xstate.c
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@@ -537,7 +537,7 @@ static void do_extra_xstate_size_checks(void)
*/
paranoid_xstate_size += xfeature_size(i);
}
XSTATE_WARN_ON(paranoid_xstate_size != xstate_size);
XSTATE_WARN_ON(paranoid_xstate_size != fpu_kernel_xstate_size);
}
@@ -616,7 +616,7 @@ static int init_xstate_size(void)
* The size is OK, we are definitely going to use xsave,
* make it known to the world that we need more space.
*/
xstate_size = possible_xstate_size;
fpu_kernel_xstate_size = possible_xstate_size;
do_extra_xstate_size_checks();
/*
@@ -679,14 +679,14 @@ void __init fpu__init_system_xstate(void)
return;
}
update_regset_xstate_info(xstate_size, xfeatures_mask);
update_regset_xstate_info(fpu_kernel_xstate_size, xfeatures_mask);
fpu__init_prepare_fx_sw_frame();
setup_init_fpu_buf();
setup_xstate_comp();
pr_info("x86/fpu: Enabled xstate features 0x%llx, context size is %d bytes, using '%s' format.\n",
xfeatures_mask,
xstate_size,
fpu_kernel_xstate_size,
boot_cpu_has(X86_FEATURE_XSAVES) ? "compacted" : "standard");
}