1. 10 Oct, 2020 4 commits
    • Marc Zyngier's avatar
      soc/tegra: pmc: Don't create fake interrupt hierarchy levels · c351ab7b
      Marc Zyngier authored
      The Tegra PMC driver does ungodly things with the interrupt hierarchy,
      repeatedly corrupting it by pulling hwirq numbers out of thin air,
      overriding existing IRQ mappings and changing the handling flow
      of unsuspecting users.
      
      All of this is done in the name of preserving the interrupt hierarchy
      even when these levels do not exist in the HW. Together with the use
      of proper IRQs for IPIs, this leads to an unbootable system as the
      rescheduling IPI gets repeatedly repurposed for random drivers...
      
      Instead, let's simply mark the level from which the hierarchy does
      not make sense for the HW, and let the core code trim the usused
      levels from the hierarchy.
      Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
      c351ab7b
    • Marc Zyngier's avatar
      soc/tegra: pmc: Allow optional irq parent callbacks · 8681cc33
      Marc Zyngier authored
      Make the PMC driver resistent to variable depth interrupt hierarchy,
      which we are about to introduce.
      Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
      8681cc33
    • Marc Zyngier's avatar
      gpio: tegra186: Allow optional irq parent callbacks · 986ec63d
      Marc Zyngier authored
      Make the tegra186 GPIO driver resistent to variable depth
      interrupt hierarchy, which we are about to introduce.
      
      No functionnal change yet.
      Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
      986ec63d
    • Marc Zyngier's avatar
      genirq/irqdomain: Allow partial trimming of irq_data hierarchy · 55567976
      Marc Zyngier authored
      It appears that some HW is ugly enough that not all the interrupts
      connected to a particular interrupt controller end up with the same
      hierarchy depth (some of them are terminated early). This leaves
      the irqchip hacker with only two choices, both equally bad:
      
      - create discrete domain chains, one for each "hierarchy depth",
        which is very hard to maintain
      
      - create fake hierarchy levels for the shallow paths, leading
        to all kind of problems (what are the safe hwirq values for these
        fake levels?)
      
      Implement the ability to cut short a single interrupt hierarchy
      from a level marked as being disconnected by using the new
      irq_domain_disconnect_hierarchy() helper.
      
      The irqdomain allocation code will then perform the trimming
      Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
      55567976
  2. 07 Sep, 2020 1 commit
  3. 06 Sep, 2020 4 commits
    • Linus Torvalds's avatar
      Merge tag 'io_uring-5.9-2020-09-06' of git://git.kernel.dk/linux-block · a8205e31
      Linus Torvalds authored
      Pull more io_uring fixes from Jens Axboe:
       "Two followup fixes. One is fixing a regression from this merge window,
        the other is two commits fixing cancelation of deferred requests.
      
        Both have gone through full testing, and both spawned a few new
        regression test additions to liburing.
      
         - Don't play games with const, properly store the output iovec and
           assign it as needed.
      
         - Deferred request cancelation fix (Pavel)"
      
      * tag 'io_uring-5.9-2020-09-06' of git://git.kernel.dk/linux-block:
        io_uring: fix linked deferred ->files cancellation
        io_uring: fix cancel of deferred reqs with ->files
        io_uring: fix explicit async read/write mapping for large segments
      a8205e31
    • Linus Torvalds's avatar
      Merge tag 'iommu-fixes-v5.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu · 2ccdd9f8
      Linus Torvalds authored
      Pull iommu fixes from Joerg Roedel:
      
       - three Intel VT-d fixes to fix address handling on 32bit, fix a NULL
         pointer dereference bug and serialize a hardware register access as
         required by the VT-d spec.
      
       - two patches for AMD IOMMU to force AMD GPUs into translation mode
         when memory encryption is active and disallow using IOMMUv2
         functionality.  This makes the AMDGPU driver work when memory
         encryption is active.
      
       - two more fixes for AMD IOMMU to fix updating the Interrupt Remapping
         Table Entries.
      
       - MAINTAINERS file update for the Qualcom IOMMU driver.
      
      * tag 'iommu-fixes-v5.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
        iommu/vt-d: Handle 36bit addressing for x86-32
        iommu/amd: Do not use IOMMUv2 functionality when SME is active
        iommu/amd: Do not force direct mapping when SME is active
        iommu/amd: Use cmpxchg_double() when updating 128-bit IRTE
        iommu/amd: Restore IRTE.RemapEn bit after programming IRTE
        iommu/vt-d: Fix NULL pointer dereference in dev_iommu_priv_set()
        iommu/vt-d: Serialize IOMMU GCMD register modifications
        MAINTAINERS: Update QUALCOMM IOMMU after Arm SMMU drivers move
      2ccdd9f8
    • Linus Torvalds's avatar
      Merge tag 'x86-urgent-2020-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 015b3155
      Linus Torvalds authored
      Pull x86 fixes from Ingo Molnar:
      
       - more generic entry code ABI fallout
      
       - debug register handling bugfixes
      
       - fix vmalloc mappings on 32-bit kernels
      
       - kprobes instrumentation output fix on 32-bit kernels
      
       - fix over-eager WARN_ON_ONCE() on !SMAP hardware
      
       - NUMA debugging fix
      
       - fix Clang related crash on !RETPOLINE kernels
      
      * tag 'x86-urgent-2020-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/entry: Unbreak 32bit fast syscall
        x86/debug: Allow a single level of #DB recursion
        x86/entry: Fix AC assertion
        tracing/kprobes, x86/ptrace: Fix regs argument order for i386
        x86, fakenuma: Fix invalid starting node ID
        x86/mm/32: Bring back vmalloc faulting on x86_32
        x86/cmdline: Disable jump tables for cmdline.c
      015b3155
    • Linus Torvalds's avatar
      Merge tag 'for-linus-5.9-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip · 68beef57
      Linus Torvalds authored
      Pull xen updates from Juergen Gross:
       "A small series for fixing a problem with Xen PVH guests when running
        as backends (e.g. as dom0).
      
        Mapping other guests' memory is now working via ZONE_DEVICE, thus not
        requiring to abuse the memory hotplug functionality for that purpose"
      
      * tag 'for-linus-5.9-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
        xen: add helpers to allocate unpopulated memory
        memremap: rename MEMORY_DEVICE_DEVDAX to MEMORY_DEVICE_GENERIC
        xen/balloon: add header guard
      68beef57
  4. 05 Sep, 2020 28 commits
  5. 04 Sep, 2020 3 commits