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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-14 20:51:50 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-14 20:51:50 +0100 |
| commit | 536e89ee53e9cbdec00e49ae1888bffa262043d8 (patch) | |
| tree | 79f842cdd5217986204faf8d4c0aa707b64356bf /Documentation/x86 | |
| parent | Merge branch 'for-3.19/drivers' of git://git.kernel.dk/linux-block (diff) | |
| parent | x86/tls: Disallow unusual TLS segments (diff) | |
| download | linux-536e89ee53e9cbdec00e49ae1888bffa262043d8.tar.xz linux-536e89ee53e9cbdec00e49ae1888bffa262043d8.zip | |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes (mainly Andy's TLS fixes), plus a cleanup"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tls: Disallow unusual TLS segments
x86/tls: Validate TLS entries to protect espfix
MAINTAINERS: Add me as x86 VDSO submaintainer
x86/asm: Unify segment selector defines
x86/asm: Guard against building the 32/64-bit versions of the asm-offsets*.c file directly
x86_64, switch_to(): Load TLS descriptors before switching DS and ES
x86/mm: Use min() instead of min_t() in the e820 printout code
x86/mm: Fix zone ranges boot printout
x86/doc: Update documentation after file shuffling
Diffstat (limited to 'Documentation/x86')
| -rw-r--r-- | Documentation/x86/entry_64.txt | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/Documentation/x86/entry_64.txt b/Documentation/x86/entry_64.txt index bc7226ef5055..4a1c5c2dc5a9 100644 --- a/Documentation/x86/entry_64.txt +++ b/Documentation/x86/entry_64.txt @@ -7,9 +7,12 @@ http://lkml.kernel.org/r/<20110529191055.GC9835%40elte.hu> The x86 architecture has quite a few different ways to jump into kernel code. Most of these entry points are registered in arch/x86/kernel/traps.c and implemented in arch/x86/kernel/entry_64.S -and arch/x86/ia32/ia32entry.S. +for 64-bit, arch/x86/kernel/entry_32.S for 32-bit and finally +arch/x86/ia32/ia32entry.S which implements the 32-bit compatibility +syscall entry points and thus provides for 32-bit processes the +ability to execute syscalls when running on 64-bit kernels. -The IDT vector assignments are listed in arch/x86/include/irq_vectors.h. +The IDT vector assignments are listed in arch/x86/include/asm/irq_vectors.h. Some of these entries are: |