user/sven/linux.git/include/linux/intel-iommu.h, branch v3.10

iommu/dmar: Reserve mmio space used by the IOMMU, if the BIOS forgets to

2012-06-08T10:15:43Z

Intel-iommu initialization doesn't currently reserve the memory used for the IOMMU registers. This can allow the pci resource allocator to assign a device BAR to the same address as the IOMMU registers. This can cause some not so nice side affects when the driver ioremap's that region. Introduced two helper functions to map & unmap the IOMMU registers as well as simplify the init and exit paths. Signed-off-by: Donald Dutile Acked-by: Chris Wright Cc: iommu@lists.linux-foundation.org Cc: suresh.b.siddha@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/1338845342-12464-3-git-send-email-ddutile@redhat.com Signed-off-by: Ingo Molnar

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2011-10-26T14:17:32Z

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits) rtmutex: Add missing rcu_read_unlock() in debug_rt_mutex_print_deadlock() lockdep: Comment all warnings lib: atomic64: Change the type of local lock to raw_spinlock_t locking, lib/atomic64: Annotate atomic64_lock::lock as raw locking, x86, iommu: Annotate qi->q_lock as raw locking, x86, iommu: Annotate irq_2_ir_lock as raw locking, x86, iommu: Annotate iommu->register_lock as raw locking, dma, ipu: Annotate bank_lock as raw locking, ARM: Annotate low level hw locks as raw locking, drivers/dca: Annotate dca_lock as raw locking, powerpc: Annotate uic->lock as raw locking, x86: mce: Annotate cmci_discover_lock as raw locking, ACPI: Annotate c3_lock as raw locking, oprofile: Annotate oprofilefs lock as raw locking, video: Annotate vga console lock as raw locking, latencytop: Annotate latency_lock as raw locking, timer_stats: Annotate table_lock as raw locking, rwsem: Annotate inner lock as raw locking, semaphores: Annotate inner lock as raw locking, sched: Annotate thread_group_cputimer as raw ... Fix up conflicts in kernel/posix-cpu-timers.c manually: making cputimer->cputime a raw lock conflicted with the ABBA fix in commit bcd5cff7216f ("cputimer: Cure lock inversion").

iommu: Rename the DMAR and INTR_REMAP config options

2011-09-21T08:22:03Z

Change the CONFIG_DMAR to CONFIG_INTEL_IOMMU to be consistent with the other IOMMU options. Rename the CONFIG_INTR_REMAP to CONFIG_IRQ_REMAP to match the irq subsystem name. And define the CONFIG_DMAR_TABLE for the common ACPI DMAR routines shared by both CONFIG_INTEL_IOMMU and CONFIG_IRQ_REMAP. Signed-off-by: Suresh Siddha Cc: yinghai@kernel.org Cc: youquan.song@intel.com Cc: joerg.roedel@amd.com Cc: tony.luck@intel.com Cc: dwmw2@infradead.org Link: http://lkml.kernel.org/r/20110824001456.558630224@sbsiddha-desk.sc.intel.com Signed-off-by: Ingo Molnar

locking, x86, iommu: Annotate qi->q_lock as raw

2011-09-13T09:12:20Z

The qi->q_lock lock can be taken in atomic context and therefore cannot be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar

locking, x86, iommu: Annotate iommu->register_lock as raw

2011-09-13T09:12:17Z

The iommu->register_lock can be taken in atomic context and therefore must not be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar

dmar: support for parsing Remapping Hardware Static Affinity structure

2009-10-05T06:55:22Z

Add support for parsing Remapping Hardware Static Affinity (RHSA) structure. This enables identifying the association between remapping hardware units and the corresponding proximity domain. This enables to allocate transalation structures closer to the remapping hardware unit. Signed-off-by: Suresh Siddha Signed-off-by: David Woodhouse

intel-iommu: Fix kernel hang if interrupt remapping disabled in BIOS

2009-09-11T15:40:10Z

BIOS clear DMAR table INTR_REMAP flag to disable interrupt remapping. Current kernel only check interrupt remapping(IR) flag in DRHD's extended capability register to decide interrupt remapping support or not. But IR flag will not change when BIOS disable/enable interrupt remapping. When user disable interrupt remapping in BIOS or BIOS often defaultly disable interrupt remapping feature when BIOS is not mature.Though BIOS disable interrupt remapping but intr_remapping_supported function will always report to OS support interrupt remapping if VT-d2 chipset populated. On this cases, kernel will continue enable interrupt remapping and result kernel panic. This bug exist on almost all platforms with interrupt remapping support. This patch add DMAR table INTR_REMAP flag check before enable interrupt remapping. Signed-off-by: Youquan Song Signed-off-by: David Woodhouse

VT-d: support the device IOTLB

2009-05-18T13:46:26Z

Enable the device IOTLB (i.e. ATS) for both the bare metal and KVM environments. Signed-off-by: Yu Zhao Signed-off-by: David Woodhouse

VT-d: add device IOTLB invalidation support

2009-05-18T13:45:13Z

Support device IOTLB invalidation to flush the translation cached in the Endpoint. Signed-off-by: Yu Zhao Signed-off-by: David Woodhouse

VT-d: parse ATSR in DMA Remapping Reporting Structure

2009-05-18T13:45:09Z

Parse the Root Port ATS Capability Reporting Structure in the DMA Remapping Reporting Structure ACPI table. Signed-off-by: Yu Zhao Signed-off-by: David Woodhouse