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67f590e8d4
linux/arch/x86/entry
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Andy Lutomirski 67f590e8d4 x86/entry/32: Filter NT and speed up AC filtering in SYSENTER 
This makes the 32-bit code work just like the 64-bit code.  It should
speed up syscalls on 32-bit kernels on Skylake by something like 20
cycles (by analogy to the 64-bit compat case).

It also cleans up NT just like we do for the 64-bit case.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/07daef3d44bd1ed62a2c866e143e8df64edb40ee.1457578375.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-03-10 09:48:12 +01:00
..
syscalls x86/syscalls/64: Mark sys_iopl() as using ptregs 2016-02-01 08:53:25 +01:00
vdso x86/vdso: Use static_cpu_has() 2016-01-30 11:22:23 +01:00
vsyscall x86/vdso: Disallow vvar access to vclock IO for never-used vclocks 2016-01-12 11:59:35 +01:00
calling.h x86/asm/entry: Remove unused SAVE_ALL/RESTORE_ALL macros for !CONFIG_x86_64 2016-01-19 08:24:03 +01:00
common.c x86/entry/compat: Keep TS_COMPAT set during signal delivery 2016-02-17 09:51:06 +01:00
entry_32.S x86/entry/32: Filter NT and speed up AC filtering in SYSENTER 2016-03-10 09:48:12 +01:00
entry_64_compat.S x86/entry/compat: In SYSENTER, sink AC clearing below the existing FLAGS test 2016-03-10 09:48:12 +01:00
entry_64.S x86/entry/64: Fix fast-path syscall return register state 2016-02-01 08:53:25 +01:00
Makefile x86/entry: Move C entry and exit code to arch/x86/entry/common.c 2015-07-07 10:59:05 +02:00
syscall_32.c x86/syscalls: Add syscall entry qualifiers 2016-01-29 09:46:38 +01:00
syscall_64.c x86/entry/64: Always run ptregs-using syscalls on the slow path 2016-01-29 09:46:38 +01:00
thunk_32.S
thunk_64.S