diff options
Diffstat (limited to 'linux-2.6-intel-iommu-igfx.patch')
| -rw-r--r-- | linux-2.6-intel-iommu-igfx.patch | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/linux-2.6-intel-iommu-igfx.patch b/linux-2.6-intel-iommu-igfx.patch deleted file mode 100644 index 3a45abaec..000000000 --- a/linux-2.6-intel-iommu-igfx.patch +++ /dev/null @@ -1,75 +0,0 @@ -From 602e1f209dd983e40d989e871cd253e8187899b8 Mon Sep 17 00:00:00 2001 -From: drago01 <drago01@gmail.com> -Date: Wed, 26 Oct 2011 13:37:27 -0400 -Subject: [PATCH] Default to igfx_off - -This option seems to causes way to many issues, it is -being investigated by Intel's chipset team for months now and -we still don't have any outcome. - -The results so far are "black screen when starting X", -"system hangs when using GL", "system does not resume". - -The patch adds an intel_iommu=igfx_on option, which makes it opt in, -rather than opt out. - -Signed-off-by: Adel Gadllah <adel.gadllah@gmail.com> -Reviewed-by: Adam Jackson <ajax@redhat.com> ---- - Documentation/kernel-parameters.txt | 11 +++++------ - drivers/iommu/intel-iommu.c | 9 +++++---- - 2 files changed, 10 insertions(+), 10 deletions(-) - -diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt -index 81c287f..ee5693b 100644 ---- a/Documentation/kernel-parameters.txt -+++ b/Documentation/kernel-parameters.txt -@@ -1014,12 +1014,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted. - Enable intel iommu driver. - off - Disable intel iommu driver. -- igfx_off [Default Off] -- By default, gfx is mapped as normal device. If a gfx -- device has a dedicated DMAR unit, the DMAR unit is -- bypassed by not enabling DMAR with this option. In -- this case, gfx device will use physical address for -- DMA. -+ igfx_on [Default Off] -+ By default, the gfx's DMAR unit is bypassed by not enabling -+ DMAR with this option. So the gfx device will use physical -+ address for DMA. When this option is enabled it the gfx is -+ mapped as normal device. - forcedac [x86_64] - With this option iommu will not optimize to look - for io virtual address below 32-bit forcing dual -diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c -index bdc447f..240db6b 100644 ---- a/drivers/iommu/intel-iommu.c -+++ b/drivers/iommu/intel-iommu.c -@@ -408,7 +408,8 @@ int dmar_disabled = 1; - int intel_iommu_enabled = 0; - EXPORT_SYMBOL_GPL(intel_iommu_enabled); - --static int dmar_map_gfx = 1; -+/* disabled by default; causes way too many issues */ -+static int dmar_map_gfx = 0; - static int dmar_forcedac; - static int intel_iommu_strict; - static int intel_iommu_superpage = 1; -@@ -433,10 +434,10 @@ static int __init intel_iommu_setup(char *str) - } else if (!strncmp(str, "off", 3)) { - dmar_disabled = 1; - printk(KERN_INFO "Intel-IOMMU: disabled\n"); -- } else if (!strncmp(str, "igfx_off", 8)) { -- dmar_map_gfx = 0; -+ } else if (!strncmp(str, "igfx_on", 7)) { -+ dmar_map_gfx = 1; - printk(KERN_INFO -- "Intel-IOMMU: disable GFX device mapping\n"); -+ "Intel-IOMMU: enabled GFX device mapping\n"); - } else if (!strncmp(str, "forcedac", 8)) { - printk(KERN_INFO - "Intel-IOMMU: Forcing DAC for PCI devices\n"); --- -1.7.7.4 - |