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| author | Thomas Gleixner <tglx@linutronix.de> | 2021-09-08 15:29:21 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2021-09-13 18:11:09 +0200 |
| commit | c1c97d175493ab32325df81133611ce8e4e05088 (patch) | |
| tree | 2ff7f5dcad65747acf109718e08955b9d7405728 /arch/x86/lib | |
| parent | x86/extable: Provide EX_TYPE_DEFAULT_MCE_SAFE and EX_TYPE_FAULT_MCE_SAFE (diff) | |
| download | linux-c1c97d175493ab32325df81133611ce8e4e05088.tar.xz linux-c1c97d175493ab32325df81133611ce8e4e05088.zip | |
x86/copy_mc: Use EX_TYPE_DEFAULT_MCE_SAFE for exception fixups
Nothing in that code uses the trap number which was stored by the exception
fixup which is instantiated via _ASM_EXTABLE_FAULT().
Use _ASM_EXTABLE(... EX_TYPE_DEFAULT_MCE_SAFE) instead which just handles
the IP fixup and the type indicates to the #MC handler that the call site
can handle the abort caused by #MC correctly.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210908132525.328706042@linutronix.de
Diffstat (limited to 'arch/x86/lib')
| -rw-r--r-- | arch/x86/lib/copy_mc_64.S | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/lib/copy_mc_64.S b/arch/x86/lib/copy_mc_64.S index e5f77e293034..7334055157ba 100644 --- a/arch/x86/lib/copy_mc_64.S +++ b/arch/x86/lib/copy_mc_64.S @@ -107,9 +107,9 @@ SYM_FUNC_END(copy_mc_fragile) .previous - _ASM_EXTABLE_FAULT(.L_read_leading_bytes, .E_leading_bytes) - _ASM_EXTABLE_FAULT(.L_read_words, .E_read_words) - _ASM_EXTABLE_FAULT(.L_read_trailing_bytes, .E_trailing_bytes) + _ASM_EXTABLE_TYPE(.L_read_leading_bytes, .E_leading_bytes, EX_TYPE_DEFAULT_MCE_SAFE) + _ASM_EXTABLE_TYPE(.L_read_words, .E_read_words, EX_TYPE_DEFAULT_MCE_SAFE) + _ASM_EXTABLE_TYPE(.L_read_trailing_bytes, .E_trailing_bytes, EX_TYPE_DEFAULT_MCE_SAFE) _ASM_EXTABLE(.L_write_leading_bytes, .E_leading_bytes) _ASM_EXTABLE(.L_write_words, .E_write_words) _ASM_EXTABLE(.L_write_trailing_bytes, .E_trailing_bytes) @@ -149,5 +149,5 @@ SYM_FUNC_END(copy_mc_enhanced_fast_string) .previous - _ASM_EXTABLE_FAULT(.L_copy, .E_copy) + _ASM_EXTABLE_TYPE(.L_copy, .E_copy, EX_TYPE_DEFAULT_MCE_SAFE) #endif /* !CONFIG_UML */ |