From: "Fenghua Yu" <fenghua.yu@intel.com>
To: "H. Peter Anvin" <hpa@linux.intel.com>,
"Ingo Molnar" <mingo@elte.hu>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Asit K Mallick" <asit.k.mallick@intel.com>
Cc: "linux-kernel" <linux-kernel@vger.kernel.org>,
"x86" <x86@kernel.org>, "Fenghua Yu" <fenghua.yu@intel.com>
Subject: [PATCH 05/15] x86/xsaves: Define macros for xsave instructions
Date: Mon, 26 May 2014 10:01:12 -0700 [thread overview]
Message-ID: <1401123682-5384-6-git-send-email-fenghua.yu@intel.com> (raw)
In-Reply-To: <1401123682-5384-1-git-send-email-fenghua.yu@intel.com>
From: Fenghua Yu <fenghua.yu@intel.com>
Define macros for xsave, xsaveopt, xsaves, xrstor, xrstors inline
instructions. The instructions will be used for saving and rstoring xstate.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
---
arch/x86/include/asm/xsave.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h
index d949ef2..71bdde4 100644
--- a/arch/x86/include/asm/xsave.h
+++ b/arch/x86/include/asm/xsave.h
@@ -52,6 +52,12 @@ extern void xsave_init(void);
extern void update_regset_xstate_info(unsigned int size, u64 xstate_mask);
extern int init_fpu(struct task_struct *child);
+#define XSAVE ".byte " REX_PREFIX "0x0f,0xae,0x27"
+#define XSAVEOPT ".byte " REX_PREFIX "0x0f,0xae,0x37"
+#define XSAVES ".byte " REX_PREFIX "0x0f,0xc7,0x2f"
+#define XRSTOR ".byte " REX_PREFIX "0x0f,0xae,0x2f"
+#define XRSTORS ".byte " REX_PREFIX "0x0f,0xc7,0x1f"
+
static inline int fpu_xrstor_checking(struct xsave_struct *fx)
{
int err;
--
1.8.1.2
next prev parent reply other threads:[~2014-05-26 17:01 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-26 17:01 [PATCH 0/15] x86/xsaves: Optimize xstate context switch by xsaves/xrstors Fenghua Yu
2014-05-26 17:01 ` [PATCH 01/15] x86/xsaves: Detect xsaves/xrstors feature Fenghua Yu
2014-05-26 17:01 ` [PATCH 02/15] x86/xsaves: Add kernel parameter to disable xsaves/xrstors Fenghua Yu
2014-05-26 17:01 ` [PATCH 03/15] x86/alternative: Add alternative_input_2 Fenghua Yu
2014-05-26 17:01 ` [PATCH 04/15] x86/xsaves: Change compacted format xsave area header Fenghua Yu
2014-05-26 17:01 ` Fenghua Yu [this message]
2014-05-26 17:01 ` [PATCH 06/15] x86/xsaves: Define macro for handle xsave/xrstor fault Fenghua Yu
2014-05-26 17:01 ` [PATCH 07/15] x86/xsaves: Use xsaves/xrstors for saving and restoring xsave area Fenghua Yu
2014-05-26 17:01 ` [PATCH 08/15] x86/xsaves: Use xsaves/xrstors for context switch Fenghua Yu
2014-05-26 17:01 ` [PATCH 09/15] x86/xsaves: Use xsave/xrstor for saving and restoring user space context Fenghua Yu
2014-05-26 17:01 ` [PATCH 10/15] x86/xsaves: Clear reserved bits in xsave header Fenghua Yu
2014-05-26 17:01 ` [PATCH 11/15] x86/xsaves: Add xsaves and xrstors support for booting time Fenghua Yu
2014-05-26 17:01 ` [PATCH 12/15] x86/xsaves: Save xstate to task's xsave area in __save_fpu during " Fenghua Yu
2014-05-26 17:01 ` [PATCH 13/15] x86/xsaves: Call booting time xsaves and xrstors in setup_init_fpu_buf Fenghua Yu
2014-05-26 17:01 ` [PATCH 14/15] x86/xsaves: Enable xsaves/xrstors Fenghua Yu
2014-05-26 17:01 ` [PATCH 15/15] Define kernel API to get address of each state in xsave area Fenghua Yu
2014-05-26 19:37 ` [PATCH 0/15] x86/xsaves: Optimize xstate context switch by xsaves/xrstors Andy Lutomirski
2014-05-26 20:13 ` Yu, Fenghua
2014-05-26 20:53 ` H. Peter Anvin
2014-05-26 21:40 ` Andy Lutomirski
2014-05-26 21:47 ` H. Peter Anvin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1401123682-5384-6-git-send-email-fenghua.yu@intel.com \
--to=fenghua.yu@intel.com \
--cc=asit.k.mallick@intel.com \
--cc=hpa@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®