Kernel

[PATCH 08/12] Revert "x86: disable IOMMUs on kernel crash"
From: Chris Wright <chrisw(a)sous-sol.org> This effectively reverts commit 61d047be99757fd9b0af900d7abce9a13a337488. Disabling the IOMMU can potetially allow DMA transactions to complete without being translated. Leave it enabled, and allow crash kernel to do the IOMMU reinitialization properly. Cc: stable(a)ke... 7 Apr 2010 08:57

[GIT PULL][PATCH 0/12] IOMMU fixes for 2.6.34-rc3
Hi Ingo, The following changes since commit 2eaa9cfdf33b8d7fb7aff27792192e0019ae8fc6: Linus Torvalds (1): Linux 2.6.34-rc3 are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu.git iommu/fixes Chris Wright (5): x86/amd-iommu: Pt mode ... 7 Apr 2010 08:57

[PATCH 06/12] x86/amd-iommu: enable iommu before attaching devices
From: Chris Wright <chrisw(a)sous-sol.org> Hit another kdump problem as reported by Neil Horman. When initializaing the IOMMU, we attach devices to their domains before the IOMMU is fully (re)initialized. Attaching a device will issue some important invalidations. In the context of the newly kexec'd kdump kernel... 7 Apr 2010 08:57

[PATCH 03/12] x86/amd-iommu: Pt mode fix for domain_destroy
From: Chris Wright <chrisw(a)sous-sol.org> After a guest is shutdown, assigned devices are not properly returned to the pt domain. This can leave the device using stale cached IOMMU data, and result in a non-functional device after it's re-bound to the host driver. For example, I see this upon rebinding: AMD... 7 Apr 2010 08:57

Lieber Freund!!!
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[PATCH] mfd: Fix WM831x I2C suspend prototype
Sorry about the oversight. Signed-off-by: Mark Brown <broonie(a)opensource.wolfsonmicro.com> --- drivers/mfd/wm831x-core.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c index d4331b2..1a968f3 100644 --- a/drivers/mfd/wm831x-core.... 7 Apr 2010 08:57

PROBLEM + POSS FIX: kernel stack overflow, xfs, many disks, heavy write load, 8k stack, x86-64
Hi folks, [I'm afraid that I'm not subscribed to the list, please cc: me on any reply]. Problem: kernel.org 2.6.33.2 x86_64 kernel locks up under write-heavy I/O load. It is "fixed" by changing THREAD_ORDER to 2. Is this an OK long-term solution/should this be needed? As far as I can see from searching, ... 13 Apr 2010 06:11

AMD IOMMU kdump fix plus cleanups (v2)
On Fri, Apr 02, 2010 at 06:27:51PM -0700, Chris Wright wrote: Series includes the following patches: x86/amd-iommu: enable iommu before attaching devices x86/amd-iommu: warn when issuing command to uninitialized cmd buffer Revert "x86: disable IOMMUs on kernel crash" x86/amd-iommu: use for_ea... 7 Apr 2010 06:46

Ugly rmap NULL ptr deref oopsie on hibernate (was Linux 2.6.34-rc3)
Hi Linus, On Wed, Apr 7, 2010 at 3:10 AM, Linus Torvalds <torvalds(a)linux-foundation.org> wrote: Sounds at least possible. Way more likely than any of the "trivially obvious" code being buggy, or the SLUB layer suddenly having a serious bug that only the new user could trigger. I haven't followed the dis... 7 Apr 2010 06:46

INFO: task apache2:7601 blocked for more than 120 seconds.
Hi I've just installed some new webservers (Apache + mod_php5) on Debian Lenny and on some machines I see this message appearing from time to time in the kernel log. [ 840.319551] INFO: task apache2:7601 blocked for more than 120 seconds. [ 840.336259] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" dis... 7 Apr 2010 06:46