Frederic Weisbecker a2cd11f7d5 x86: Tell about irq stack coverage ... x86-64 runs irq_exit() under the irq stack. So it can afford to run softirqs in hardirq exit without the need to switch the stacks. The hardirq stack is good enough for that. Now x86-64 runs softirqs in the hardirq stack anyway, so what we mostly skip is some needless per cpu refcounting updates there. x86-32 is not concerned because it only runs the irq handler on the irq stack. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@au1.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Mackerras <paulus@au1.ibm.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: James E.J. Bottomley <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: David S. Miller <davem@davemloft.net> Cc: Andrew Morton <akpm@linux-foundation.org>		2013-10-01 12:53:28 +02:00
..
boot	Merge branch 'x86-kaslr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-09-04 09:38:10 -07:00
configs	x86, platform, kvm, kconfig: Turn existing .config's into KVM-capable configs	2013-05-28 12:11:32 +02:00
crypto	Reinstate "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"	2013-09-07 12:56:26 +10:00
ia32	Merge branch 'x86-smap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-09-04 11:08:32 -07:00
include	Bug-fixes:	2013-09-25 15:50:53 -07:00
kernel	irq: Consolidate do_softirq() arch overriden implementations	2013-10-01 12:53:25 +02:00
kvm	KVM: VMX: set "blocked by NMI" flag if EPT violation happens during IRET from NMI	2013-09-17 19:09:47 +03:00
lguest	lguest: fix GPF in guest when using gdb.	2013-09-06 08:09:28 +09:30
lib	Merge branch 'x86-smap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-09-04 11:08:32 -07:00
math-emu
mm	x86: finish user fault error path with fatal signal	2013-09-12 15:38:01 -07:00
net	x86: bpf_jit_comp: secure bpf jit against spraying attacks	2013-05-19 23:55:41 -07:00
oprofile	oprofilefs_create_...() do not need superblock argument	2013-09-03 22:52:48 -04:00
pci	PCI changes for the v3.12 merge window:	2013-09-03 16:24:35 -07:00
platform	x86, efi: Don't map Boot Services on i386	2013-09-18 14:42:33 +01:00
power	x86, asmlinkage, power: Make various symbols used by the suspend asm code visible	2013-08-06 14:21:03 -07:00
realmode	x86, relocs: Refactor the relocs tool to merge 32- and 64-bit ELF	2013-04-16 16:02:58 -07:00
syscalls	unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE	2013-05-09 13:46:38 -04:00
tools	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-09-04 08:39:38 -07:00
um	um: prctl: Do not include linux/ptrace.h	2013-09-07 10:57:11 +02:00
vdso	remove sched notifier for cross-cpu migrations	2013-07-18 12:29:30 +02:00
video
xen	Bug-fixes:	2013-09-25 15:50:53 -07:00
.gitignore
Kbuild
Kconfig	x86: Tell about irq stack coverage	2013-10-01 12:53:28 +02:00
Kconfig.cpu	x86, 386 removal: Document Nx586 as a 386 and thus unsupported	2012-11-29 13:28:39 -08:00
Kconfig.debug	Merge branch 'kconfig-diet' from Dave Hansen	2013-07-04 11:25:51 -07:00
Makefile	x86, relocs: Move ELF relocation handling to C	2013-08-07 21:00:04 -07:00
Makefile_32.cpu	x86, 386 removal: Remove CONFIG_M386 from Kconfig	2012-11-29 13:23:01 -08:00
Makefile.um