diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2019-04-14 18:59:45 +0300 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2019-04-17 13:48:00 +0300 |
| commit | 8f34c5b5afce91d171bb0802631197484cb69b8b (patch) | |
| tree | b79c16c0f7f572ce200b221230d377971b85a4ae /arch/x86/kernel/dumpstack_64.c | |
| parent | 30842211506e376b76394a9cb4e6d0c9d258b8d4 (diff) | |
| download | linux-8f34c5b5afce91d171bb0802631197484cb69b8b.tar.xz | |
x86/exceptions: Make IST index zero based
The defines for the exception stack (IST) array in the TSS are using the
SDM convention IST1 - IST7. That causes all sorts of code to subtract 1 for
array indices related to IST. That's confusing at best and does not provide
any value.
Make the indices zero based and fixup the usage sites. The only code which
needs to adjust the 0 based index is the interrupt descriptor setup which
needs to add 1 now.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: linux-doc@vger.kernel.org
Cc: Nicolai Stange <nstange@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Qian Cai <cai@lca.pw>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190414160144.331772825@linutronix.de
Diffstat (limited to 'arch/x86/kernel/dumpstack_64.c')
| -rw-r--r-- | arch/x86/kernel/dumpstack_64.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c index 90f0fa88cbb3..455b47ef9250 100644 --- a/arch/x86/kernel/dumpstack_64.c +++ b/arch/x86/kernel/dumpstack_64.c @@ -18,16 +18,16 @@ #include <asm/stacktrace.h> -static char *exception_stack_names[N_EXCEPTION_STACKS] = { - [ DOUBLEFAULT_STACK-1 ] = "#DF", - [ NMI_STACK-1 ] = "NMI", - [ DEBUG_STACK-1 ] = "#DB", - [ MCE_STACK-1 ] = "#MC", +static const char *exception_stack_names[N_EXCEPTION_STACKS] = { + [ ESTACK_DF ] = "#DF", + [ ESTACK_NMI ] = "NMI", + [ ESTACK_DB ] = "#DB", + [ ESTACK_MCE ] = "#MC", }; -static unsigned long exception_stack_sizes[N_EXCEPTION_STACKS] = { +static const unsigned long exception_stack_sizes[N_EXCEPTION_STACKS] = { [0 ... N_EXCEPTION_STACKS - 1] = EXCEPTION_STKSZ, - [DEBUG_STACK - 1] = DEBUG_STKSZ + [ESTACK_DB] = DEBUG_STKSZ }; const char *stack_type_name(enum stack_type type) |