path: root/Documentation
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authorLinus Torvalds <torvalds@linux-foundation.org>2014-12-14 11:51:50 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-12-14 11:51:50 -0800
commit536e89ee53e9cbdec00e49ae1888bffa262043d8 (patch)
tree79f842cdd5217986204faf8d4c0aa707b64356bf /Documentation
parentMerge branch 'for-3.19/drivers' of git://git.kernel.dk/linux-block (diff)
parentx86/tls: Disallow unusual TLS segments (diff)
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')
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: