linux-libre-grsec{,-knock}-3.18.2_gnu.201501132141-1: updating version

2 files changed, 85 insertions, 1 deletions

diff --git a/kernels/linux-libre-grsec-knock/0001-drm-i915-Disallow-pin-ioctl-completely-for-kms-drive.patch b/kernels/linux-libre-grsec-knock/0001-drm-i915-Disallow-pin-ioctl-completely-for-kms-drive.patch
new file mode 100644
index 000000000..f9aa99342
--- /dev/null
+++ b/kernels/linux-libre-grsec-knock/0001-drm-i915-Disallow-pin-ioctl-completely-for-kms-drive.patch
@@ -0,0 +1,79 @@
+From d472fcc8379c062bd56a3876fc6ef22258f14a91 Mon Sep 17 00:00:00 2001
+From: Daniel Vetter <daniel.vetter@ffwll.ch>
+Date: Mon, 24 Nov 2014 11:12:42 +0100
+Subject: [PATCH] drm/i915: Disallow pin ioctl completely for kms drivers
+
+The problem here is that SNA pins batchbuffers to etch out a bit more
+performance. Iirc it started out as a w/a for i830M (which we've
+implemented in the kernel since a long time already). The problem is
+that the pin ioctl wasn't added in
+
+commit d23db88c3ab233daed18709e3a24d6c95344117f
+Author: Chris Wilson <chris@chris-wilson.co.uk>
+Date:   Fri May 23 08:48:08 2014 +0200
+
+    drm/i915: Prevent negative relocation deltas from wrapping
+
+Fix this by simply disallowing pinning from userspace so that the
+kernel is in full control of batch placement again. Especially since
+distros are moving towards running X as non-root, so most users won't
+even be able to see any benefits.
+
+UMS support is dead now, but we need this minimal patch for
+backporting. Follow-up patch will remove the pin ioctl code
+completely.
+
+Note to backporters: You must have both
+
+commit b45305fce5bb1abec263fcff9d81ebecd6306ede
+Author: Daniel Vetter <daniel.vetter@ffwll.ch>
+Date:   Mon Dec 17 16:21:27 2012 +0100
+
+    drm/i915: Implement workaround for broken CS tlb on i830/845
+
+which laned in 3.8 and
+
+commit c4d69da167fa967749aeb70bc0e94a457e5d00c1
+Author: Chris Wilson <chris@chris-wilson.co.uk>
+Date:   Mon Sep 8 14:25:41 2014 +0100
+
+    drm/i915: Evict CS TLBs between batches
+
+which is also marked cc: stable. Otherwise this could introduce a
+regression by disabling the userspace w/a without the kernel w/a being
+fully functional on i830/45.
+
+References: https://bugs.freedesktop.org/show_bug.cgi?id=76554#c116
+Cc: stable@vger.kernel.org # requires c4d69da167fa967749a and v3.8
+Cc: Chris Wilson <chris@chris-wilson.co.uk>
+Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
+---
+ drivers/gpu/drm/i915/i915_gem.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
+index fd17cca..97b86a5 100644
+--- a/drivers/gpu/drm/i915/i915_gem.c
++++ b/drivers/gpu/drm/i915/i915_gem.c
+@@ -4263,7 +4263,7 @@ i915_gem_pin_ioctl(struct drm_device *dev, void *data,
+ 	struct drm_i915_gem_object *obj;
+ 	int ret;
+ 
+-	if (INTEL_INFO(dev)->gen >= 6)
++	if (drm_core_check_feature(dev, DRIVER_MODESET))
+ 		return -ENODEV;
+ 
+ 	ret = i915_mutex_lock_interruptible(dev);
+@@ -4319,6 +4319,9 @@ i915_gem_unpin_ioctl(struct drm_device *dev, void *data,
+ 	struct drm_i915_gem_object *obj;
+ 	int ret;
+ 
++	if (drm_core_check_feature(dev, DRIVER_MODESET))
++		return -ENODEV;
++
+ 	ret = i915_mutex_lock_interruptible(dev);
+ 	if (ret)
+ 		return ret;
+-- 
+2.2.0
+
diff --git a/kernels/linux-libre-grsec-knock/PKGBUILD b/kernels/linux-libre-grsec-knock/PKGBUILD
index 70d42020e..bcb718329 100644
--- a/kernels/linux-libre-grsec-knock/PKGBUILD
+++ b/kernels/linux-libre-grsec-knock/PKGBUILD
@@ -14,7 +14,7 @@ pkgbase=linux-libre-grsec-knock   # Build kernel with -grsec-knock localname
 _pkgbasever=3.18-gnu
 _pkgver=3.18.2-gnu
 _grsecver=3.0
-_timestamp=201501120821
+_timestamp=201501132141
 _knockpatchver=3.18_1
 
 _replacesarchkernel=('linux%') # '%' gets replaced with _kernelname
@@ -44,6 +44,7 @@ source=("http://linux-libre.fsfla.org/pub/linux-libre/releases/${_pkgbasever}/li
         'linux.preset'
         'logo_linux_'{clut224.ppm,vga16.ppm,mono.pbm}
         'change-default-console-loglevel.patch'
+        '0001-drm-i915-Disallow-pin-ioctl-completely-for-kms-drive.patch'
         # loongson-community patch: http://linux-libre.fsfla.org/pub/linux-libre/lemote/gnewsense/pool/debuginfo/
         # Note: Makefile patching was removed due which we are using specific flags from grsecurity patch
         '3.18-rc6-48c0ad793f-loongson-community.patch')
@@ -63,6 +64,7 @@ sha256sums=('0f347d8eba8a6878246b94b3559eb0371d96a3f43de2f134513e274de11a60cf'
             '2e87a8ec1cc0c91938cac24992d8a3d4362b3e9d939767e4c9d2ec8e6d969d53'
             'f67f60a30bcf2e9a2ba88ad97cace308da7a7f94919bb95c3dc030f5885a8015'
             '1256b241cd477b265a3c2d64bdc19ffe3c9bbcee82ea3994c590c2c76e767d99'
+            '0bda45a3ef0f2780bbe588f2e53ab2b79814d29e9c6fc7bfff3b0dbdaa9e710d'
             '438ce44e3409d644f0a99b05c3208ae3f1d46b8efe0edfc7d52ce3625e381ae9')
 validpgpkeys=(
               '474402C8C582DAFBE389C427BCB7CF877E7D47A7' # Alexandre Oliva
@@ -102,6 +104,9 @@ prepare() {
   # add latest fixes from stable queue, if needed
   # http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git
 
+  # fix #43143
+  patch -p1 -i "${srcdir}/0001-drm-i915-Disallow-pin-ioctl-completely-for-kms-drive.patch"
+
   # set DEFAULT_CONSOLE_LOGLEVEL to 4 (same value as the 'quiet' kernel param)
   # remove this when a Kconfig knob is made available by upstream
   # (relevant patch sent upstream: https://lkml.org/lkml/2011/7/26/227)