blackbird-obmc-linux - Blackbird™ Linux sources for OpenBMC

	Commit message (Collapse)	Author	Age	Files	Lines
*	x86, smap: Add STAC and CLAC instructions to control user space access	H. Peter Anvin	2012-09-21	1	-1/+7
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	When Supervisor Mode Access Prevention (SMAP) is enabled, access to userspace from the kernel is controlled by the AC flag. To make the performance of manipulating that flag acceptable, there are two new instructions, STAC and CLAC, to set and clear it. This patch adds those instructions, via alternative(), when the SMAP feature is enabled. It also adds X86_EFLAGS_AC unconditionally to the SYSCALL entry mask; there is simply no reason to make that one conditional. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1348256595-29119-9-git-send-email-hpa@linux.intel.com
*	x86, extable: Remove open-coded exception table entries in ↵	H. Peter Anvin	2012-04-20	1	-7/+5
\| \| \| \| \| \| \| \| \| \| \| \|	arch/x86/lib/putuser.S Remove open-coded exception table entries in arch/x86/lib/putuser.S, and replace them with _ASM_EXTABLE() macros; this will allow us to change the format and type of the exception table entries. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: David Daney <david.daney@cavium.com> Link: http://lkml.kernel.org/r/CA%2B55aFyijf43qSu3N9nWHEBwaGbb7T2Oq9A=9EyR=Jtyqfq_cQ@mail.gmail.com
*	x86: merge putuser asm functions.	Glauber Costa	2008-07-09	1	-0/+97
	putuser_32.S and putuser_64.S are merged into putuser.S. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>