3.4-stable patches

added patches:
	iommu-intel-disable-dmar-for-g4x-integrated-gfx.patch

diff --git a/queue-3.4/iommu-intel-disable-dmar-for-g4x-integrated-gfx.patch b/queue-3.4/iommu-intel-disable-dmar-for-g4x-integrated-gfx.patch
new file mode 100644 (file)
index 0000000..5d4e970
--- /dev/null
+++ b/queue-3.4/iommu-intel-disable-dmar-for-g4x-integrated-gfx.patch
@@ -0,0 +1,74 @@
+From 9452618e7462181ed9755236803b6719298a13ce Mon Sep 17 00:00:00 2001
+From: Daniel Vetter <daniel.vetter@ffwll.ch>
+Date: Sun, 20 Jan 2013 23:50:13 +0100
+Subject: iommu/intel: disable DMAR for g4x integrated gfx
+
+From: Daniel Vetter <daniel.vetter@ffwll.ch>
+
+commit 9452618e7462181ed9755236803b6719298a13ce upstream.
+
+DMAR support on g4x/gm45 integrated gpus seems to be totally busted.
+So don't bother, but instead disable it by default to allow distros to
+unconditionally enable DMAR support.
+
+v2: Actually wire up the right quirk entry, spotted by Adam Jackson.
+
+Note that according to intel marketing materials only g45 and gm45
+support DMAR/VT-d. So we have reports for all relevant gen4 pci ids by
+now. Still, keep all the other gen4 ids in the quirk table in case the
+marketing stuff confused me again, which would not be the first time.
+
+Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=51921
+Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=538163
+Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=538163
+Cc: Adam Jackson <ajax@redhat.com>
+Cc: David Woodhouse <dwmw2@infradead.org>
+Cc: stable@vger.kernel.org
+Acked-By: David Woodhouse <David.Woodhouse@intel.com>
+Tested-by: stathis <stathis@npcglib.org>
+Tested-by: Mihai Moldovan <ionic@ionic.de>
+Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
+Signed-off-by: Mihai Moldovan <ionic@ionic.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/iommu/intel-iommu.c |   21 +++++++++++++++------
+ 1 file changed, 15 insertions(+), 6 deletions(-)
+
+--- a/drivers/iommu/intel-iommu.c
++++ b/drivers/iommu/intel-iommu.c
+@@ -4193,6 +4193,21 @@ static struct iommu_ops intel_iommu_ops
+       .pgsize_bitmap  = INTEL_IOMMU_PGSIZES,
+ };
+ 
++static void __devinit quirk_iommu_g4x_gfx(struct pci_dev *dev)
++{
++      /* G4x/GM45 integrated gfx dmar support is totally busted. */
++      printk(KERN_INFO "DMAR: Disabling IOMMU for graphics on this chipset\n");
++      dmar_map_gfx = 0;
++}
++
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2a40, quirk_iommu_g4x_gfx);
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e00, quirk_iommu_g4x_gfx);
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e10, quirk_iommu_g4x_gfx);
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e20, quirk_iommu_g4x_gfx);
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e30, quirk_iommu_g4x_gfx);
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e40, quirk_iommu_g4x_gfx);
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e90, quirk_iommu_g4x_gfx);
++
+ static void __devinit quirk_iommu_rwbf(struct pci_dev *dev)
+ {
+       /*
+@@ -4201,12 +4216,6 @@ static void __devinit quirk_iommu_rwbf(s
+        */
+       printk(KERN_INFO "DMAR: Forcing write-buffer flush capability\n");
+       rwbf_quirk = 1;
+-
+-      /* https://bugzilla.redhat.com/show_bug.cgi?id=538163 */
+-      if (dev->revision == 0x07) {
+-              printk(KERN_INFO "DMAR: Disabling IOMMU for graphics on this chipset\n");
+-              dmar_map_gfx = 0;
+-      }
+ }
+ 
+ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2a40, quirk_iommu_rwbf);

diff --git a/queue-3.4/series b/queue-3.4/series
index c57b20da806554c3bad149ee385d1abfb7f96c55..f3ceb0dba636497edb74269bcf1f0799b2953f4f 100644 (file)
--- a/queue-3.4/series
+++ b/queue-3.4/series
@@ -22,3 +22,4 @@ alsa-hda-add-a-fixup-for-packard-bell-desktop-with-alc880.patch
 edac-test-correct-variable-in-store-function.patch
 asoc-wm2200-correct-mixer-values-and-text.patch
 bluetooth-fix-incorrect-strncpy-in-hidp_setup_hid.patch
+iommu-intel-disable-dmar-for-g4x-integrated-gfx.patch