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Constantine Gavrilov b7fd1edd2c [PATCH] x86: fix sigaddset() inline asm memory constraint 
Due to incomplete memory constraints, gcc would miscompile code with
sigaddset on i386 if sig arg was const.

A quote form Jakub to make the issue clear:

 "You need either
	__asm__("btsl %1,%0" : "+m"(*set) : "Ir"(_sig-1) : "cc");
  or
	__asm__("btsl %1,%0" : "=m"(*set) : "Ir"(_sig-1), "m"(*set) : "cc");
  because the btsl instruction doesn't just set the memory to some
  value, but needs to read its previous content as well.  If you don't
  tell that fact to GCC, GCC is of course free to optimize as if the asm
  was just setting the value and not depended on the previous value."

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2005-11-17 08:42:26 -08:00
..
acpi
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asm-alpha [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-arm Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-11-13 18:17:54 -08:00
asm-arm26 [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-cris [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-frv [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-generic Merge x86-64 update from Andi 2005-11-14 19:56:02 -08:00
asm-h8300 [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-i386 [PATCH] x86: fix sigaddset() inline asm memory constraint 2005-11-17 08:42:26 -08:00
asm-ia64 [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-m32r [PATCH] consolidate sys_ptrace() 2005-11-07 07:53:42 -08:00
asm-m68k [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-m68knommu [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-mips [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-parisc [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-powerpc [PATCH] powerpc: Make the vDSO functions set error code (#2) 2005-11-16 14:05:11 +11:00
asm-ppc [PATCH] powerpc: replace page_to_virt() with lowmem_page_address() for Book-E 2005-11-16 13:52:12 +11:00
asm-ppc64 [PATCH] powerpc: pci_64 fixes & cleanups 2005-11-16 13:29:46 +11:00
asm-s390 [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-sh [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-sh64 [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-sparc [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-sparc64 [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-um [PATCH] uml: maintain own LDT entries 2005-11-07 07:53:31 -08:00
asm-v850 [PATCH] v850: use generic hardirq code 2005-11-15 08:59:20 -08:00
asm-x86_64 Merge x86-64 update from Andi 2005-11-14 19:56:02 -08:00
asm-xtensa [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
keys [PATCH] Keys: Export user-defined keyring operations 2005-10-30 17:37:22 -08:00
linux [DVB]: Add compat ioctl handling. 2005-11-16 00:52:57 -08:00
math-emu
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media [PATCH] v4l: (945) adds a new include for internal v4l2 ioctls and api 2005-11-13 18:14:19 -08:00
mtd [MTD] user-abi: Clean up trailing white spaces 2005-11-07 14:43:11 +01:00
net [TCP]: More spelling fixes. 2005-11-15 15:17:10 -08:00
pcmcia [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00
rdma [IB] uverbs: have kernel return QP capabilities 2005-11-10 10:22:50 -08:00
rxrpc [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
scsi [SCSI] use a completion in scsi_send_eh_cmnd 2005-11-06 12:49:36 -06:00
sound [ALSA] version 1.0.10rc3 2005-11-07 14:35:14 +01:00
video
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