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From: Yu-cheng Yu <yu-cheng.yu@intel.com>
To: linux-kernel@vger.kernel.org, x86@kernel.org,
	"H. Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
	Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@suse.de>,
	Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>,
	"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	Yu-cheng Yu <yu-cheng.yu@intel.com>
Subject: [PATCH v7 08/13] x86/xsaves: Fix XSTATE component offset print out
Date: Wed, 11 May 2016 12:51:11 -0700	[thread overview]
Message-ID: <53dfe77b39d57787389e0a97464294811371d439.1462983817.git.yu-cheng.yu@intel.com> (raw)
In-Reply-To: <cover.1462983817.git.yu-cheng.yu@intel.com>
In-Reply-To: <cover.1462983817.git.yu-cheng.yu@intel.com>

Component offset print out was incorrect for XSAVES. Correct it and move
to a separate function.

Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
---
 arch/x86/kernel/fpu/xstate.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index cc1f356..95d089b 100644
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -269,8 +269,6 @@ static void __init setup_xstate_features(void)
 		WARN_ONCE(last_good_offset > xstate_offsets[i],
 			"x86/fpu: misordered xstate at %d\n", last_good_offset);
 		last_good_offset = xstate_offsets[i];
-
-		printk(KERN_INFO "x86/fpu: xstate_offset[%d]: %4d, xstate_sizes[%d]: %4d\n", i, ebx, i, eax);
 	}
 }
 
@@ -374,6 +372,21 @@ static void __init setup_xstate_comp(void)
 }
 
 /*
+ * Print out xstate component offsets and sizes
+ */
+static void __init print_xstate_offset_size(void)
+{
+	int i;
+
+	for (i = FIRST_EXTENDED_XFEATURE; i < XFEATURE_MAX; i++) {
+		if (!xfeature_enabled(i))
+			continue;
+		pr_info("x86/fpu: xstate_offset[%d]: %4d, xstate_sizes[%d]: %4d\n",
+			 i, xstate_comp_offsets[i], i, xstate_sizes[i]);
+	}
+}
+
+/*
  * setup the xstate image representing the init state
  */
 static void __init setup_init_fpu_buf(void)
@@ -708,6 +721,7 @@ void __init fpu__init_system_xstate(void)
 	fpu__init_prepare_fx_sw_frame();
 	setup_init_fpu_buf();
 	setup_xstate_comp();
+	print_xstate_offset_size();
 
 	pr_info("x86/fpu: Enabled xstate features 0x%llx, context size is %d bytes, using '%s' format.\n",
 		xfeatures_mask,
-- 
1.9.1

  parent reply	other threads:[~2016-05-11 19:57 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-11 19:51 [PATCH v7 00/13] x86/xsaves: Fix XSAVES issues Yu-cheng Yu
2016-05-11 19:51 ` [PATCH v7 01/13] x86/xsaves: Define and use fpu_user_xstate_size Yu-cheng Yu
2016-05-11 19:51 ` [PATCH v7 02/13] x86/xsaves: Rename xstate_size to fpu_kernel_xstate_size to distinguish from fpu_user_xstate_size Yu-cheng Yu
2016-05-11 19:51 ` [PATCH v7 03/13] x86/xsaves: Keep init_fpstate.xsave.header.xfeatures as zero for init optimization Yu-cheng Yu
2016-05-11 19:51 ` [PATCH v7 04/13] x86/xsaves: Introduce a new check that allows correct xstates copy from kernel to user directly Yu-cheng Yu
2016-05-11 19:51 ` [PATCH v7 05/13] x86/xsaves: Align xstate components according to CPUID Yu-cheng Yu
2016-05-11 19:51 ` [PATCH v7 06/13] x86/xsaves: Supervisor state component offset Yu-cheng Yu
2016-05-11 19:51 ` [PATCH v7 07/13] x86/xsaves: Fix PTRACE frames for XSAVES Yu-cheng Yu
2016-05-11 19:51 ` Yu-cheng Yu [this message]
2016-05-11 19:51 ` [PATCH v7 09/13] x86/xsaves: Fix xstate_offsets, xstate_sizes for non-extended states Yu-cheng Yu
2016-05-11 19:51 ` [PATCH v7 10/13] x86/xsaves: Fix __fpu_restore_sig() for XSAVES Yu-cheng Yu
2016-05-11 19:51 ` [PATCH v7 11/13] x86/xsaves: When a disabled xstate component address is requested, return NULL Yu-cheng Yu
2016-05-11 19:51 ` [PATCH v7 12/13] x86/xsaves: Fix fpstate_init() for XRSTORS Yu-cheng Yu
2016-05-11 19:51 ` [PATCH v7 13/13] x86/xsaves: Re-enable XSAVES Yu-cheng Yu
2016-05-11 20:04 ` [PATCH v7 00/13] x86/xsaves: Fix XSAVES issues Borislav Petkov
2016-05-11 20:14   ` Dave Hansen
2016-05-11 20:34     ` Borislav Petkov

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