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x86/fpu/xstate: Rename validate_xstate_header() to validate_user_xstate_header()

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The function validate_xstate_header() validates an xstate header coming
from userspace (PTRACE or sigreturn). To make it clear, rename it to
validate_user_xstate_header().

Suggested-by: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200512145444.15483-2-yu-cheng.yu@intel.com
This commit is contained in:
Fenghua Yu
2020-05-12 07:54:35 -07:00
committed by Borislav Petkov
parent 2ef96a5bb1
commit 5274e6c172
4 changed files with 6 additions and 6 deletions
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6
arch/x86/kernel/fpu/xstate.c
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@@ -472,7 +472,7 @@ int using_compacted_format(void)
}
/* Validate an xstate header supplied by userspace (ptrace or sigreturn) */
int validate_xstate_header(const struct xstate_header *hdr)
int validate_user_xstate_header(const struct xstate_header *hdr)
{
/* No unknown or supervisor features may be set */
if (hdr->xfeatures & (~xfeatures_mask | XFEATURE_MASK_SUPERVISOR))
@@ -1147,7 +1147,7 @@ int copy_kernel_to_xstate(struct xregs_state *xsave, const void *kbuf)
memcpy(&hdr, kbuf + offset, size);
if (validate_xstate_header(&hdr))
if (validate_user_xstate_header(&hdr))
return -EINVAL;
for (i = 0; i < XFEATURE_MAX; i++) {
@@ -1201,7 +1201,7 @@ int copy_user_to_xstate(struct xregs_state *xsave, const void __user *ubuf)
if (__copy_from_user(&hdr, ubuf + offset, size))
return -EFAULT;
if (validate_xstate_header(&hdr))
if (validate_user_xstate_header(&hdr))
return -EINVAL;
for (i = 0; i < XFEATURE_MAX; i++) {