linux/arch/x86/entry
Andy Lutomirski 7d8d8cfdee x86/doublefault/32: Rewrite the x86_32 #DF handler and unify with 64-bit
The old x86_32 doublefault_fn() was old and crufty, and it did not
even try to recover.  do_double_fault() is much nicer.  Rewrite the
32-bit double fault code to sanitize CPU state and call
do_double_fault().  This is mostly an exercise i386 archaeology.

With this patch applied, 32-bit double faults get a real stack trace,
just like 64-bit double faults.

[ mingo: merged the patch to a later kernel base. ]

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>
2019-11-26 22:00:04 +01:00
..
syscalls syscalls/x86: Use the correct function type for sys_ni_syscall 2019-10-11 12:49:18 +02:00
vdso Merge branch 'x86/build' into x86/asm, to pick up completed topic branch 2019-11-25 09:05:09 +01:00
vsyscall Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2019-07-08 21:48:15 -07:00
calling.h Merge branch master from git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2019-07-28 22:22:40 +02:00
common.c x86/ioperm: Move TSS bitmap update to exit to user work 2019-11-16 11:24:03 +01:00
entry_32.S x86/doublefault/32: Rewrite the x86_32 #DF handler and unify with 64-bit 2019-11-26 22:00:04 +01:00
entry_64_compat.S x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_* 2019-10-18 11:58:33 +02:00
entry_64.S x86/entry/64: Remove pointless jump in paranoid_exit 2019-11-16 12:55:55 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
syscall_32.c syscalls/x86: Use the correct function type for sys_ni_syscall 2019-10-11 12:49:18 +02:00
syscall_64.c syscalls/x86: Use the correct function type for sys_ni_syscall 2019-10-11 12:49:18 +02:00
thunk_32.S x86/asm/entry: Annotate THUNKs 2019-10-18 09:58:59 +02:00
thunk_64.S x86/asm/entry: Annotate THUNKs 2019-10-18 09:58:59 +02:00