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authorAndy Lutomirski <luto@kernel.org>2019-11-20 22:12:38 -0800
committerIngo Molnar <mingo@kernel.org>2019-11-26 21:53:34 +0100
commit93efbde2c331004d8053f04b4bf0ca3e630b474a (patch)
treeda94642f314fb062e92a555eca60d8d072e98ae7 /arch/x86/Kconfig.debug
parentb09511c253e5c739a60952b97c071a93e92b2e88 (diff)
downloadlinux-93efbde2c331004d8053f04b4bf0ca3e630b474a.tar.bz2
x86/traps: Disentangle the 32-bit and 64-bit doublefault code
The 64-bit doublefault handler is much nicer than the 32-bit one. As a first step toward unifying them, make the 64-bit handler self-contained. This should have no effect no functional effect except in the odd case of x86_64 with CONFIG_DOUBLEFAULT=n in which case it will change the logging a bit. This also gets rid of CONFIG_DOUBLEFAULT configurability on 64-bit kernels. It didn't do anything useful -- CONFIG_DOUBLEFAULT=n didn't actually disable doublefault handling on x86_64. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/Kconfig.debug')
-rw-r--r--arch/x86/Kconfig.debug2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 409c00f74e60..c4eab8ed33a3 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -117,7 +117,7 @@ config DEBUG_WX
config DOUBLEFAULT
default y
- bool "Enable doublefault exception handler" if EXPERT
+ bool "Enable doublefault exception handler" if EXPERT && X86_32
---help---
This option allows trapping of rare doublefault exceptions that
would otherwise cause a system to silently reboot. Disabling this