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author | Andy Lutomirski <luto@kernel.org> | 2017-12-04 15:07:17 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2017-12-17 13:59:55 +0100 |
commit | 7fb983b4dd569e08564134a850dfd4eb1c63d9b8 (patch) | |
tree | b517637f76fc61268e1febface4a6ac5c7573496 /arch/x86/include/asm/desc.h | |
parent | 21506525fb8ddb0342f2a2370812d47f6a1f3833 (diff) | |
download | linux-stable-7fb983b4dd569e08564134a850dfd4eb1c63d9b8.tar.gz linux-stable-7fb983b4dd569e08564134a850dfd4eb1c63d9b8.tar.bz2 linux-stable-7fb983b4dd569e08564134a850dfd4eb1c63d9b8.zip |
x86/entry: Fix assumptions that the HW TSS is at the beginning of cpu_tss
A future patch will move SYSENTER_stack to the beginning of cpu_tss
to help detect overflow. Before this can happen, fix several code
paths that hardcode assumptions about the old layout.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bpetkov@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Laight <David.Laight@aculab.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Eduardo Valentin <eduval@amazon.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: aliguori@amazon.com
Cc: daniel.gruss@iaik.tugraz.at
Cc: hughd@google.com
Cc: keescook@google.com
Link: https://lkml.kernel.org/r/20171204150605.722425540@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/desc.h')
-rw-r--r-- | arch/x86/include/asm/desc.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h index f6f428432a68..2ace1f90d138 100644 --- a/arch/x86/include/asm/desc.h +++ b/arch/x86/include/asm/desc.h @@ -178,7 +178,7 @@ static inline void set_tssldt_descriptor(void *d, unsigned long addr, #endif } -static inline void __set_tss_desc(unsigned cpu, unsigned int entry, void *addr) +static inline void __set_tss_desc(unsigned cpu, unsigned int entry, struct x86_hw_tss *addr) { struct desc_struct *d = get_cpu_gdt_rw(cpu); tss_desc tss; |