4.4-stable patches

added patches:
	x86-cpu-probe-cpuid-leaf-6-even-when-cpuid_level-6.patch

diff --git a/queue-4.4/series b/queue-4.4/series
index 9dce20da67ddfc8e731dd6f3091989dfd9b35282..625c7a6e986507d3f13db39a672a53c95b3d607d 100644 (file)
--- a/queue-4.4/series
+++ b/queue-4.4/series
@@ -1 +1,2 @@
 kbuild-fix-escaping-in-.cmd-files-for-future-make.patch
+x86-cpu-probe-cpuid-leaf-6-even-when-cpuid_level-6.patch

diff --git a/queue-4.4/x86-cpu-probe-cpuid-leaf-6-even-when-cpuid_level-6.patch b/queue-4.4/x86-cpu-probe-cpuid-leaf-6-even-when-cpuid_level-6.patch
new file mode 100644 (file)
index 0000000..c4a521e
--- /dev/null
+++ b/queue-4.4/x86-cpu-probe-cpuid-leaf-6-even-when-cpuid_level-6.patch
@@ -0,0 +1,45 @@
+From 3df8d9208569ef0b2313e516566222d745f3b94b Mon Sep 17 00:00:00 2001
+From: Andy Lutomirski <luto@kernel.org>
+Date: Thu, 15 Dec 2016 10:14:42 -0800
+Subject: x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6
+
+From: Andy Lutomirski <luto@kernel.org>
+
+commit 3df8d9208569ef0b2313e516566222d745f3b94b upstream.
+
+A typo (or mis-merge?) resulted in leaf 6 only being probed if
+cpuid_level >= 7.
+
+Fixes: 2ccd71f1b278 ("x86/cpufeature: Move some of the scattered feature bits to x86_capability")
+Signed-off-by: Andy Lutomirski <luto@kernel.org>
+Acked-by: Borislav Petkov <bp@alien8.de>
+Cc: Brian Gerst <brgerst@gmail.com>
+Link: http://lkml.kernel.org/r/6ea30c0e9daec21e488b54761881a6dfcf3e04d0.1481825597.git.luto@kernel.org
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+Cc: Brad Spengler <spender@grsecurity.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ arch/x86/kernel/cpu/common.c |    7 ++++---
+ 1 file changed, 4 insertions(+), 3 deletions(-)
+
+--- a/arch/x86/kernel/cpu/common.c
++++ b/arch/x86/kernel/cpu/common.c
+@@ -686,13 +686,14 @@ void get_cpu_cap(struct cpuinfo_x86 *c)
+               c->x86_capability[CPUID_1_EDX] = edx;
+       }
+ 
++      /* Thermal and Power Management Leaf: level 0x00000006 (eax) */
++      if (c->cpuid_level >= 0x00000006)
++              c->x86_capability[CPUID_6_EAX] = cpuid_eax(0x00000006);
++
+       /* Additional Intel-defined flags: level 0x00000007 */
+       if (c->cpuid_level >= 0x00000007) {
+               cpuid_count(0x00000007, 0, &eax, &ebx, &ecx, &edx);
+-
+               c->x86_capability[CPUID_7_0_EBX] = ebx;
+-
+-              c->x86_capability[CPUID_6_EAX] = cpuid_eax(0x00000006);
+               c->x86_capability[CPUID_7_ECX] = ecx;
+       }
+