From: Suresh Siddha <suresh.b.siddha@intel.com>
To: mingo@elte.hu, hpa@zytor.com, tglx@linutronix.de,
torvalds@linux-foundation.org, akpm@linux-foundation.org,
arjan@linux.intel.com, roland@redhat.com, drepper@redhat.com,
mikpe@it.uu.se, chrisw@sous-sol.org, andi@firstfloor.org
Cc: linux-kernel@vger.kernel.org, suresh.b.siddha@intel.com
Subject: [patch 0/9] x86, xsave: xsave/xrstor support
Date: Tue, 29 Jul 2008 10:29:17 -0700 [thread overview]
Message-ID: <20080729172917.185593000@linux-os.sc.intel.com> (raw)
This patchset adds the support for xsave/xrstor infrastructure for x86.
xsave/xrstor manages the existing and future processor extended states in x86
architecutre.
More info on xsave/xrstor can be found in the Intel SDM's located at
http://www.intel.com/products/processor/manuals/index.htm
The layout of the xsave/xrstor area extends from the 512-byte FXSAVE/FXRSTOR
layout. xsave/xrstor area layout consists of:
- fxsave/fxrstor area (512 bytes)
- xsave header area (64 bytes)
- set of save areas, each corresponding to a processor extended state
The number of save areas, the offset and the size of each save area is
enumerated by CPUID leaf function 0xd.
This patch includes the basic xsave/xrstor infrastructure(supporting FP/SSE),
which includes:
- context switch support, extending traditional lazy restore mechanism
- signal handling support, extending(using the software reserved bytes
464..511 in the current 512byte layout of fxsave frame) the memory
layout pointed out by the fpstate pointer in the sigcontext
More details in the patches to follow.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
---
next reply other threads:[~2008-07-29 17:40 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-29 17:29 Suresh Siddha [this message]
2008-07-29 17:29 ` [patch 1/9] x86, xsave: xsave cpuid feature bits Suresh Siddha
2008-07-29 17:29 ` [patch 2/9] x86, xsave: enable xsave/xrstor on cpus with xsave support Suresh Siddha
2008-07-29 17:29 ` [patch 3/9] x86, xsave: context switch support using xsave/xrstor Suresh Siddha
2008-07-29 17:29 ` [patch 4/9] x86, xsave: dynamically allocate sigframes fpstate instead of static allocation Suresh Siddha
2008-07-29 17:29 ` [patch 5/9] x86, xsave: reorganization of signal save/restore fpstate code layout Suresh Siddha
2008-07-29 17:29 ` [patch 6/9] x86, xsave: xsave/xrstor specific routines Suresh Siddha
2008-07-29 17:29 ` [patch 7/9] x86, xsave: struct _fpstate extensions to include extended state information Suresh Siddha
2008-07-29 17:29 ` [patch 8/9] x86, xsave: save/restore the extended state context in sigframe Suresh Siddha
2008-07-29 17:29 ` [patch 9/9] x86, xsave: update xsave header bits during ptrace fpregs set Suresh Siddha
2008-07-29 23:09 ` [patch 0/9] x86, xsave: xsave/xrstor support H. Peter Anvin
2008-07-29 23:29 ` Suresh Siddha
2008-07-29 23:43 ` H. Peter Anvin
2008-07-30 10:03 ` Ingo Molnar
2008-07-30 16:31 ` H. Peter Anvin
2008-07-30 17:08 ` Suresh Siddha
2008-07-30 17:14 ` H. Peter Anvin
2008-07-30 18:25 ` Ingo Molnar
2008-07-30 21:46 ` Suresh Siddha
2008-07-30 23:41 ` Suresh Siddha
2008-07-31 21:29 ` Ingo Molnar
2008-07-31 21:58 ` Suresh Siddha
2008-07-31 22:14 ` Andi Kleen
2008-07-31 22:19 ` Suresh Siddha
2008-07-31 22:36 ` Andi Kleen
2008-07-31 22:38 ` Linus Torvalds
2008-07-31 22:50 ` Ingo Molnar
2008-08-01 2:06 ` Rene Herman
2008-08-01 9:51 ` Ingo Molnar
2008-08-01 14:27 ` Rene Herman
2008-08-01 14:49 ` Andi Kleen
2008-08-01 15:19 ` Rene Herman
2008-08-01 15:44 ` Andi Kleen
2008-08-01 16:03 ` Rene Herman
2008-07-31 22:48 ` Alan Cox
2008-07-31 22:17 ` Ingo Molnar
2008-08-13 11:00 ` Ingo Molnar
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