1. 24 Feb, 2018 9 commits
    • Marc Hartmayer's avatar
      tools/kvm_stat: use a more pythonic way to iterate over dictionaries · 0eb57800
      Marc Hartmayer authored
      If it's clear that the values of a dictionary will be used then use
      the '.items()' method.
      Signed-off-by: default avatarMarc Hartmayer <mhartmay@linux.vnet.ibm.com>
      Tested-by: default avatarStefan Raspl <raspl@linux.vnet.ibm.com>
      [Include fix for logging mode by Stefan Raspl]
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      0eb57800
    • Marc Hartmayer's avatar
      tools/kvm_stat: use a namedtuple for storing the values · 006f1548
      Marc Hartmayer authored
      Use a namedtuple for storing the values as it allows to access the
      fields of a tuple via names. This makes the overall code much easier
      to read and to understand. Access by index is still possible as
      before.
      Signed-off-by: default avatarMarc Hartmayer <mhartmay@linux.vnet.ibm.com>
      Tested-by: default avatarStefan Raspl <raspl@linux.vnet.ibm.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      006f1548
    • Marc Hartmayer's avatar
      tools/kvm_stat: simplify the sortkey function · faa312a5
      Marc Hartmayer authored
      The 'sortkey' function references a value in its enclosing
      scope (closure). This is not common practice for a sort key function
      so let's replace it. Additionally, the function 'sorted' has already a
      parameter for reversing the result therefore the inversion of the
      values is unneeded. The check for stats[x][1] is also superfluous as
      it's ensured that this value is initialized with 0.
      Signed-off-by: default avatarMarc Hartmayer <mhartmay@linux.vnet.ibm.com>
      Tested-by: default avatarStefan Raspl <raspl@linux.vnet.ibm.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      faa312a5
    • Wanpeng Li's avatar
      KVM: X86: Fix SMRAM accessing even if VM is shutdown · 95e057e2
      Wanpeng Li authored
      Reported by syzkaller:
      
         WARNING: CPU: 6 PID: 2434 at arch/x86/kvm/vmx.c:6660 handle_ept_misconfig+0x54/0x1e0 [kvm_intel]
         CPU: 6 PID: 2434 Comm: repro_test Not tainted 4.15.0+ #4
         RIP: 0010:handle_ept_misconfig+0x54/0x1e0 [kvm_intel]
         Call Trace:
          vmx_handle_exit+0xbd/0xe20 [kvm_intel]
          kvm_arch_vcpu_ioctl_run+0xdaf/0x1d50 [kvm]
          kvm_vcpu_ioctl+0x3e9/0x720 [kvm]
          do_vfs_ioctl+0xa4/0x6a0
          SyS_ioctl+0x79/0x90
          entry_SYSCALL_64_fastpath+0x25/0x9c
      
      The testcase creates a first thread to issue KVM_SMI ioctl, and then creates
      a second thread to mmap and operate on the same vCPU.  This triggers a race
      condition when running the testcase with multiple threads. Sometimes one thread
      exits with a triple fault while another thread mmaps and operates on the same
      vCPU.  Because CS=0x3000/IP=0x8000 is not mapped, accessing the SMI handler
      results in an EPT misconfig. This patch fixes it by returning RET_PF_EMULATE
      in kvm_handle_bad_page(), which will go on to cause an emulation failure and an
      exit with KVM_EXIT_INTERNAL_ERROR.
      
      Reported-by: syzbot+c1d9517cab094dae65e446c0c5b4de6c40f4dc58@syzkaller.appspotmail.com
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Radim Krčmář <rkrcmar@redhat.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarWanpeng Li <wanpengli@tencent.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      95e057e2
    • Chao Gao's avatar
      KVM: nVMX: Don't halt vcpu when L1 is injecting events to L2 · 135a06c3
      Chao Gao authored
      Although L2 is in halt state, it will be in the active state after
      VM entry if the VM entry is vectoring according to SDM 26.6.2 Activity
      State. Halting the vcpu here means the event won't be injected to L2
      and this decision isn't reported to L1. Thus L0 drops an event that
      should be injected to L2.
      
      Cc: Liran Alon <liran.alon@oracle.com>
      Reviewed-by: default avatarLiran Alon <liran.alon@oracle.com>
      Signed-off-by: default avatarChao Gao <chao.gao@intel.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      135a06c3
    • Wanpeng Li's avatar
      KVM: mmu: Fix overlap between public and private memslots · b28676bb
      Wanpeng Li authored
      Reported by syzkaller:
      
          pte_list_remove: ffff9714eb1f8078 0->BUG
          ------------[ cut here ]------------
          kernel BUG at arch/x86/kvm/mmu.c:1157!
          invalid opcode: 0000 [#1] SMP
          RIP: 0010:pte_list_remove+0x11b/0x120 [kvm]
          Call Trace:
           drop_spte+0x83/0xb0 [kvm]
           mmu_page_zap_pte+0xcc/0xe0 [kvm]
           kvm_mmu_prepare_zap_page+0x81/0x4a0 [kvm]
           kvm_mmu_invalidate_zap_all_pages+0x159/0x220 [kvm]
           kvm_arch_flush_shadow_all+0xe/0x10 [kvm]
           kvm_mmu_notifier_release+0x6c/0xa0 [kvm]
           ? kvm_mmu_notifier_release+0x5/0xa0 [kvm]
           __mmu_notifier_release+0x79/0x110
           ? __mmu_notifier_release+0x5/0x110
           exit_mmap+0x15a/0x170
           ? do_exit+0x281/0xcb0
           mmput+0x66/0x160
           do_exit+0x2c9/0xcb0
           ? __context_tracking_exit.part.5+0x4a/0x150
           do_group_exit+0x50/0xd0
           SyS_exit_group+0x14/0x20
           do_syscall_64+0x73/0x1f0
           entry_SYSCALL64_slow_path+0x25/0x25
      
      The reason is that when creates new memslot, there is no guarantee for new
      memslot not overlap with private memslots. This can be triggered by the
      following program:
      
         #include <fcntl.h>
         #include <pthread.h>
         #include <setjmp.h>
         #include <signal.h>
         #include <stddef.h>
         #include <stdint.h>
         #include <stdio.h>
         #include <stdlib.h>
         #include <string.h>
         #include <sys/ioctl.h>
         #include <sys/stat.h>
         #include <sys/syscall.h>
         #include <sys/types.h>
         #include <unistd.h>
         #include <linux/kvm.h>
      
         long r[16];
      
         int main()
         {
      	void *p = valloc(0x4000);
      
      	r[2] = open("/dev/kvm", 0);
      	r[3] = ioctl(r[2], KVM_CREATE_VM, 0x0ul);
      
      	uint64_t addr = 0xf000;
      	ioctl(r[3], KVM_SET_IDENTITY_MAP_ADDR, &addr);
      	r[6] = ioctl(r[3], KVM_CREATE_VCPU, 0x0ul);
      	ioctl(r[3], KVM_SET_TSS_ADDR, 0x0ul);
      	ioctl(r[6], KVM_RUN, 0);
      	ioctl(r[6], KVM_RUN, 0);
      
      	struct kvm_userspace_memory_region mr = {
      		.slot = 0,
      		.flags = KVM_MEM_LOG_DIRTY_PAGES,
      		.guest_phys_addr = 0xf000,
      		.memory_size = 0x4000,
      		.userspace_addr = (uintptr_t) p
      	};
      	ioctl(r[3], KVM_SET_USER_MEMORY_REGION, &mr);
      	return 0;
         }
      
      This patch fixes the bug by not adding a new memslot even if it
      overlaps with private memslots.
      Reported-by: default avatarDmitry Vyukov <dvyukov@google.com>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: Radim Krčmář <rkrcmar@redhat.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarWanpeng Li <wanpeng.li@hotmail.com>
      ---
       virt/kvm/kvm_main.c | 3 +--
       1 file changed, 1 insertion(+), 2 deletions(-)
      b28676bb
    • Eric Biggers's avatar
      KVM/x86: remove WARN_ON() for when vm_munmap() fails · 103c763c
      Eric Biggers authored
      On x86, special KVM memslots such as the TSS region have anonymous
      memory mappings created on behalf of userspace, and these mappings are
      removed when the VM is destroyed.
      
      It is however possible for removing these mappings via vm_munmap() to
      fail.  This can most easily happen if the thread receives SIGKILL while
      it's waiting to acquire ->mmap_sem.   This triggers the 'WARN_ON(r < 0)'
      in __x86_set_memory_region().  syzkaller was able to hit this, using
      'exit()' to send the SIGKILL.  Note that while the vm_munmap() failure
      results in the mapping not being removed immediately, it is not leaked
      forever but rather will be freed when the process exits.
      
      It's not really possible to handle this failure properly, so almost
      every other caller of vm_munmap() doesn't check the return value.  It's
      a limitation of having the kernel manage these mappings rather than
      userspace.
      
      So just remove the WARN_ON() so that users can't spam the kernel log
      with this warning.
      
      Fixes: f0d648bd ("KVM: x86: map/unmap private slots in __x86_set_memory_region")
      Reported-by: default avatarsyzbot <syzkaller@googlegroups.com>
      Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
      Signed-off-by: default avatarRadim Krčmář <rkrcmar@redhat.com>
      103c763c
    • Radim Krčmář's avatar
      KVM: nVMX: preserve SECONDARY_EXEC_DESC without UMIP · 99158246
      Radim Krčmář authored
      L1 might want to use SECONDARY_EXEC_DESC, so we must not clear the VMCS
      bit if UMIP is not being emulated.
      
      We must still set the bit when emulating UMIP as the feature can be
      passed to L2 where L0 will do the emulation and because L2 can change
      CR4 without a VM exit, we should clear the bit if UMIP is disabled.
      
      Fixes: 0367f205 ("KVM: vmx: add support for emulating UMIP")
      Reviewed-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      Signed-off-by: default avatarRadim Krčmář <rkrcmar@redhat.com>
      99158246
    • Paolo Bonzini's avatar
      KVM: x86: move LAPIC initialization after VMCS creation · 0b2e9904
      Paolo Bonzini authored
      The initial reset of the local APIC is performed before the VMCS has been
      created, but it tries to do a vmwrite:
      
       vmwrite error: reg 810 value 4a00 (err 18944)
       CPU: 54 PID: 38652 Comm: qemu-kvm Tainted: G        W I      4.16.0-0.rc2.git0.1.fc28.x86_64 #1
       Hardware name: Intel Corporation S2600CW/S2600CW, BIOS SE5C610.86B.01.01.0003.090520141303 09/05/2014
       Call Trace:
        vmx_set_rvi [kvm_intel]
        vmx_hwapic_irr_update [kvm_intel]
        kvm_lapic_reset [kvm]
        kvm_create_lapic [kvm]
        kvm_arch_vcpu_init [kvm]
        kvm_vcpu_init [kvm]
        vmx_create_vcpu [kvm_intel]
        kvm_vm_ioctl [kvm]
      
      Move it later, after the VMCS has been created.
      
      Fixes: 4191db26 ("KVM: x86: Update APICv on APIC reset")
      Cc: stable@vger.kernel.org
      Cc: Liran Alon <liran.alon@oracle.com>
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      0b2e9904
  2. 23 Feb, 2018 2 commits
  3. 20 Feb, 2018 4 commits
  4. 15 Feb, 2018 2 commits
    • Arnd Bergmann's avatar
      ARM: kvm: fix building with gcc-8 · 67870eb1
      Arnd Bergmann authored
      In banked-sr.c, we use a top-level '__asm__(".arch_extension virt")'
      statement to allow compilation of a multi-CPU kernel for ARMv6
      and older ARMv7-A that don't normally support access to the banked
      registers.
      
      This is considered to be a programming error by the gcc developers
      and will no longer work in gcc-8, where we now get a build error:
      
      /tmp/cc4Qy7GR.s:34: Error: Banked registers are not available with this architecture. -- `mrs r3,SP_usr'
      /tmp/cc4Qy7GR.s:41: Error: Banked registers are not available with this architecture. -- `mrs r3,ELR_hyp'
      /tmp/cc4Qy7GR.s:55: Error: Banked registers are not available with this architecture. -- `mrs r3,SP_svc'
      /tmp/cc4Qy7GR.s:62: Error: Banked registers are not available with this architecture. -- `mrs r3,LR_svc'
      /tmp/cc4Qy7GR.s:69: Error: Banked registers are not available with this architecture. -- `mrs r3,SPSR_svc'
      /tmp/cc4Qy7GR.s:76: Error: Banked registers are not available with this architecture. -- `mrs r3,SP_abt'
      
      Passign the '-march-armv7ve' flag to gcc works, and is ok here, because
      we know the functions won't ever be called on pre-ARMv7VE machines.
      Unfortunately, older compiler versions (4.8 and earlier) do not understand
      that flag, so we still need to keep the asm around.
      
      Backporting to stable kernels (4.6+) is needed to allow those to be built
      with future compilers as well.
      
      Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84129
      Fixes: 33280b4c ("ARM: KVM: Add banked registers save/restore")
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      67870eb1
    • Christoffer Dall's avatar
      KVM: arm/arm64: Fix arch timers with userspace irqchips · d60d8b64
      Christoffer Dall authored
      When introducing support for irqchip in userspace we needed a way to
      mask the timer signal to prevent the guest continuously exiting due to a
      screaming timer.
      
      We did this by disabling the corresponding percpu interrupt on the
      host interrupt controller, because we cannot rely on the host system
      having a GIC, and therefore cannot make any assumptions about having an
      active state to hide the timer signal.
      
      Unfortunately, when introducing this feature, it became entirely
      possible that a VCPU which belongs to a VM that has a userspace irqchip
      can disable the vtimer irq on the host on some physical CPU, and then go
      away without ever enabling the vtimer irq on that physical CPU again.
      
      This means that using irqchips in userspace on a system that also
      supports running VMs with an in-kernel GIC can prevent forward progress
      from in-kernel GIC VMs.
      
      Later on, when we started taking virtual timer interrupts in the arch
      timer code, we would also leave this timer state active for userspace
      irqchip VMs, because we leave it up to a VGIC-enabled guest to
      deactivate the hardware IRQ using the HW bit in the LR.
      
      Both issues are solved by only using the enable/disable trick on systems
      that do not have a host GIC which supports the active state, because all
      VMs on such systems must use irqchips in userspace.  Systems that have a
      working GIC with support for an active state use the active state to
      mask the timer signal for both userspace and in-kernel irqchips.
      
      Cc: Alexander Graf <agraf@suse.de>
      Reviewed-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Cc: <stable@vger.kernel.org> # v4.12+
      Fixes: d9e13977 ("KVM: arm/arm64: Support arch timers with a userspace gic")
      Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
      d60d8b64
  5. 14 Feb, 2018 7 commits
  6. 11 Feb, 2018 9 commits
    • Linus Torvalds's avatar
      Linux 4.16-rc1 · 7928b2cb
      Linus Torvalds authored
      7928b2cb
    • Al Viro's avatar
      unify {de,}mangle_poll(), get rid of kernel-side POLL... · 7a163b21
      Al Viro authored
      except, again, POLLFREE and POLL_BUSY_LOOP.
      
      With this, we finally get to the promised end result:
      
       - POLL{IN,OUT,...} are plain integers and *not* in __poll_t, so any
         stray instances of ->poll() still using those will be caught by
         sparse.
      
       - eventpoll.c and select.c warning-free wrt __poll_t
      
       - no more kernel-side definitions of POLL... - userland ones are
         visible through the entire kernel (and used pretty much only for
         mangle/demangle)
      
       - same behavior as after the first series (i.e. sparc et.al. epoll(2)
         working correctly).
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      7a163b21
    • Linus Torvalds's avatar
      vfs: do bulk POLL* -> EPOLL* replacement · a9a08845
      Linus Torvalds authored
      This is the mindless scripted replacement of kernel use of POLL*
      variables as described by Al, done by this script:
      
          for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
              L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
              for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
          done
      
      with de-mangling cleanups yet to come.
      
      NOTE! On almost all architectures, the EPOLL* constants have the same
      values as the POLL* constants do.  But they keyword here is "almost".
      For various bad reasons they aren't the same, and epoll() doesn't
      actually work quite correctly in some cases due to this on Sparc et al.
      
      The next patch from Al will sort out the final differences, and we
      should be all done.
      Scripted-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a9a08845
    • Linus Torvalds's avatar
      Merge branch 'work.poll2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · ee5daa13
      Linus Torvalds authored
      Pull more poll annotation updates from Al Viro:
       "This is preparation to solving the problems you've mentioned in the
        original poll series.
      
        After this series, the kernel is ready for running
      
            for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
                  L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
                  for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
            done
      
        as a for bulk search-and-replace.
      
        After that, the kernel is ready to apply the patch to unify
        {de,}mangle_poll(), and then get rid of kernel-side POLL... uses
        entirely, and we should be all done with that stuff.
      
        Basically, that's what you suggested wrt KPOLL..., except that we can
        use EPOLL... instead - they already are arch-independent (and equal to
        what is currently kernel-side POLL...).
      
        After the preparations (in this series) switch to returning EPOLL...
        from ->poll() instances is completely mechanical and kernel-side
        POLL... can go away. The last step (killing kernel-side POLL... and
        unifying {de,}mangle_poll() has to be done after the
        search-and-replace job, since we need userland-side POLL... for
        unified {de,}mangle_poll(), thus the cherry-pick at the last step.
      
        After that we will have:
      
         - POLL{IN,OUT,...} *not* in __poll_t, so any stray instances of
           ->poll() still using those will be caught by sparse.
      
         - eventpoll.c and select.c warning-free wrt __poll_t
      
         - no more kernel-side definitions of POLL... - userland ones are
           visible through the entire kernel (and used pretty much only for
           mangle/demangle)
      
         - same behavior as after the first series (i.e. sparc et.al. epoll(2)
           working correctly)"
      
      * 'work.poll2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        annotate ep_scan_ready_list()
        ep_send_events_proc(): return result via esed->res
        preparation to switching ->poll() to returning EPOLL...
        add EPOLLNVAL, annotate EPOLL... and event_poll->event
        use linux/poll.h instead of asm/poll.h
        xen: fix poll misannotation
        smc: missing poll annotations
      ee5daa13
    • Linus Torvalds's avatar
      Merge tag 'xtensa-20180211' of git://github.com/jcmvbkbc/linux-xtensa · 3fc928dc
      Linus Torvalds authored
      Pull xtense fix from Max Filippov:
       "Build fix for xtensa architecture with KASAN enabled"
      
      * tag 'xtensa-20180211' of git://github.com/jcmvbkbc/linux-xtensa:
        xtensa: fix build with KASAN
      3fc928dc
    • Linus Torvalds's avatar
      Merge tag 'nios2-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2 · 60d7a21a
      Linus Torvalds authored
      Pull nios2 update from Ley Foon Tan:
      
       - clean up old Kconfig options from defconfig
      
       - remove leading 0x and 0s from bindings notation in dts files
      
      * tag 'nios2-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
        nios2: defconfig: Cleanup from old Kconfig options
        nios2: dts: Remove leading 0x and 0s from bindings notation
      60d7a21a
    • Max Filippov's avatar
      xtensa: fix build with KASAN · f8d0cbf2
      Max Filippov authored
      The commit 917538e2 ("kasan: clean up KASAN_SHADOW_SCALE_SHIFT
      usage") removed KASAN_SHADOW_SCALE_SHIFT definition from
      include/linux/kasan.h and added it to architecture-specific headers,
      except for xtensa. This broke the xtensa build with KASAN enabled.
      Define KASAN_SHADOW_SCALE_SHIFT in arch/xtensa/include/asm/kasan.h
      
      Reported by: kbuild test robot <fengguang.wu@intel.com>
      Fixes: 917538e2 ("kasan: clean up KASAN_SHADOW_SCALE_SHIFT usage")
      Acked-by: default avatarAndrey Konovalov <andreyknvl@google.com>
      Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
      f8d0cbf2
    • Krzysztof Kozlowski's avatar
      nios2: defconfig: Cleanup from old Kconfig options · e0691ebb
      Krzysztof Kozlowski authored
      Remove old, dead Kconfig option INET_LRO. It is gone since
      commit 7bbf3cae ("ipv4: Remove inet_lro library").
      Signed-off-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
      Acked-by: default avatarLey Foon Tan <ley.foon.tan@intel.com>
      e0691ebb
    • Mathieu Malaterre's avatar
      nios2: dts: Remove leading 0x and 0s from bindings notation · 5d13c731
      Mathieu Malaterre authored
      Improve the DTS files by removing all the leading "0x" and zeros to fix the
      following dtc warnings:
      
      Warning (unit_address_format): Node /XXX unit name should not have leading "0x"
      
      and
      
      Warning (unit_address_format): Node /XXX unit name should not have leading 0s
      
      Converted using the following command:
      
      find . -type f \( -iname *.dts -o -iname *.dtsi \) -exec sed -E -i -e "s/@0x([0-9a-fA-F\.]+)\s?\{/@\L\1 \{/g" -e "s/@0+([0-9a-fA-F\.]+)\s?\{/@\L\1 \{/g" {} +
      
      For simplicity, two sed expressions were used to solve each warnings separately.
      
      To make the regex expression more robust a few other issues were resolved,
      namely setting unit-address to lower case, and adding a whitespace before the
      the opening curly brace:
      
      https://elinux.org/Device_Tree_Linux#Linux_conventions
      
      This is a follow up to commit 4c9847b7 ("dt-bindings: Remove leading 0x from bindings notation")
      Reported-by: default avatarDavid Daney <ddaney@caviumnetworks.com>
      Suggested-by: default avatarRob Herring <robh@kernel.org>
      Signed-off-by: default avatarMathieu Malaterre <malat@debian.org>
      Acked-by: default avatarLey Foon Tan <ley.foon.tan@intel.com>
      5d13c731
  7. 10 Feb, 2018 7 commits
    • Linus Torvalds's avatar
      Merge tag 'pci-v4.16-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci · d48fcbd8
      Linus Torvalds authored
      Pull PCI fix from Bjorn Helgaas:
       "Fix a POWER9/powernv INTx regression from the merge window (Alexey
        Kardashevskiy)"
      
      * tag 'pci-v4.16-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
        powerpc/pci: Fix broken INTx configuration via OF
      d48fcbd8
    • Linus Torvalds's avatar
      Merge tag 'for-linus-20180210' of git://git.kernel.dk/linux-block · 9454473c
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A few fixes to round off the merge window on the block side:
      
         - a set of bcache fixes by way of Michael Lyle, from the usual bcache
           suspects.
      
         - add a simple-to-hook-into function for bpf EIO error injection.
      
         - fix blk-wbt that mischarectized flushes as reads. Improve the logic
           so that flushes and writes are accounted as writes, and only reads
           as reads. From me.
      
         - fix requeue crash in BFQ, from Paolo"
      
      * tag 'for-linus-20180210' of git://git.kernel.dk/linux-block:
        block, bfq: add requeue-request hook
        bcache: fix for data collapse after re-attaching an attached device
        bcache: return attach error when no cache set exist
        bcache: set writeback_rate_update_seconds in range [1, 60] seconds
        bcache: fix for allocator and register thread race
        bcache: set error_limit correctly
        bcache: properly set task state in bch_writeback_thread()
        bcache: fix high CPU occupancy during journal
        bcache: add journal statistic
        block: Add should_fail_bio() for bpf error injection
        blk-wbt: account flush requests correctly
      9454473c
    • Linus Torvalds's avatar
      Merge tag 'platform-drivers-x86-v4.16-3' of git://github.com/dvhart/linux-pdx86 · cc5cb5af
      Linus Torvalds authored
      Pull x86 platform driver updates from Darren Hart:
       "Mellanox fixes and new system type support.
      
        Mostly data for new system types with a correction and an
        uninitialized variable fix"
      
      [ Pulling from github because git.infradead.org currently seems to be
        down for some reason, but Darren had a backup location    - Linus ]
      
      * tag 'platform-drivers-x86-v4.16-3' of git://github.com/dvhart/linux-pdx86:
        platform/x86: mlx-platform: Add support for new 200G IB and Ethernet systems
        platform/x86: mlx-platform: Add support for new msn201x system type
        platform/x86: mlx-platform: Add support for new msn274x system type
        platform/x86: mlx-platform: Fix power cable setting for msn21xx family
        platform/x86: mlx-platform: Add define for the negative bus
        platform/x86: mlx-platform: Use defines for bus assignment
        platform/mellanox: mlxreg-hotplug: Fix uninitialized variable
      cc5cb5af
    • Linus Torvalds's avatar
      Merge tag 'chrome-platform-for-linus-4.16' of... · e9d46f74
      Linus Torvalds authored
      Merge tag 'chrome-platform-for-linus-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform
      
      Pull chrome platform updates from Benson Leung:
      
       - move cros_ec_dev to drivers/mfd
      
       - other small maintenance fixes
      
      [ The cros_ec_dev movement came in earlier through the MFD tree  - Linus ]
      
      * tag 'chrome-platform-for-linus-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform:
        platform/chrome: Use proper protocol transfer function
        platform/chrome: cros_ec_lpc: Add support for Google Glimmer
        platform/chrome: cros_ec_lpc: Register the driver if ACPI entry is missing.
        platform/chrome: cros_ec_lpc: remove redundant pointer request
        cros_ec: fix nul-termination for firmware build info
        platform/chrome: chromeos_laptop: make chromeos_laptop const
      e9d46f74
    • Linus Torvalds's avatar
      Merge tag 'kvm-4.16-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 15303ba5
      Linus Torvalds authored
      Pull KVM updates from Radim Krčmář:
       "ARM:
      
         - icache invalidation optimizations, improving VM startup time
      
         - support for forwarded level-triggered interrupts, improving
           performance for timers and passthrough platform devices
      
         - a small fix for power-management notifiers, and some cosmetic
           changes
      
        PPC:
      
         - add MMIO emulation for vector loads and stores
      
         - allow HPT guests to run on a radix host on POWER9 v2.2 CPUs without
           requiring the complex thread synchronization of older CPU versions
      
         - improve the handling of escalation interrupts with the XIVE
           interrupt controller
      
         - support decrement register migration
      
         - various cleanups and bugfixes.
      
        s390:
      
         - Cornelia Huck passed maintainership to Janosch Frank
      
         - exitless interrupts for emulated devices
      
         - cleanup of cpuflag handling
      
         - kvm_stat counter improvements
      
         - VSIE improvements
      
         - mm cleanup
      
        x86:
      
         - hypervisor part of SEV
      
         - UMIP, RDPID, and MSR_SMI_COUNT emulation
      
         - paravirtualized TLB shootdown using the new KVM_VCPU_PREEMPTED bit
      
         - allow guests to see TOPOEXT, GFNI, VAES, VPCLMULQDQ, and more
           AVX512 features
      
         - show vcpu id in its anonymous inode name
      
         - many fixes and cleanups
      
         - per-VCPU MSR bitmaps (already merged through x86/pti branch)
      
         - stable KVM clock when nesting on Hyper-V (merged through
           x86/hyperv)"
      
      * tag 'kvm-4.16-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (197 commits)
        KVM: PPC: Book3S: Add MMIO emulation for VMX instructions
        KVM: PPC: Book3S HV: Branch inside feature section
        KVM: PPC: Book3S HV: Make HPT resizing work on POWER9
        KVM: PPC: Book3S HV: Fix handling of secondary HPTEG in HPT resizing code
        KVM: PPC: Book3S PR: Fix broken select due to misspelling
        KVM: x86: don't forget vcpu_put() in kvm_arch_vcpu_ioctl_set_sregs()
        KVM: PPC: Book3S PR: Fix svcpu copying with preemption enabled
        KVM: PPC: Book3S HV: Drop locks before reading guest memory
        kvm: x86: remove efer_reload entry in kvm_vcpu_stat
        KVM: x86: AMD Processor Topology Information
        x86/kvm/vmx: do not use vm-exit instruction length for fast MMIO when running nested
        kvm: embed vcpu id to dentry of vcpu anon inode
        kvm: Map PFN-type memory regions as writable (if possible)
        x86/kvm: Make it compile on 32bit and with HYPYERVISOR_GUEST=n
        KVM: arm/arm64: Fixup userspace irqchip static key optimization
        KVM: arm/arm64: Fix userspace_irqchip_in_use counting
        KVM: arm/arm64: Fix incorrect timer_is_pending logic
        MAINTAINERS: update KVM/s390 maintainers
        MAINTAINERS: add Halil as additional vfio-ccw maintainer
        MAINTAINERS: add David as a reviewer for KVM/s390
        ...
      15303ba5
    • Alexey Kardashevskiy's avatar
      powerpc/pci: Fix broken INTx configuration via OF · c591c2e3
      Alexey Kardashevskiy authored
      59f47eff ("powerpc/pci: Use of_irq_parse_and_map_pci() helper")
      replaced of_irq_parse_pci() + irq_create_of_mapping() with
      of_irq_parse_and_map_pci(), but neglected to capture the virq
      returned by irq_create_of_mapping(), so virq remained zero, which
      caused INTx configuration to fail.
      
      Save the virq value returned by of_irq_parse_and_map_pci() and correct
      the virq declaration to match the of_irq_parse_and_map_pci() signature.
      
      Fixes: 59f47eff "powerpc/pci: Use of_irq_parse_and_map_pci() helper"
      Signed-off-by: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
      [bhelgaas: changelog]
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      c591c2e3
    • Linus Torvalds's avatar
      Merge tag 'kbuild-v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild · 9a61df9e
      Linus Torvalds authored
      Pull more Kbuild updates from Masahiro Yamada:
       "Makefile changes:
         - enable unused-variable warning that was wrongly disabled for clang
      
        Kconfig changes:
         - warn about blank 'help' and fix existing instances
         - fix 'choice' behavior to not write out invisible symbols
         - fix misc weirdness
      
        Coccinell changes:
         - fix false positive of free after managed memory alloc detection
         - improve performance of NULL dereference detection"
      
      * tag 'kbuild-v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (21 commits)
        kconfig: remove const qualifier from sym_expand_string_value()
        kconfig: add xrealloc() helper
        kconfig: send error messages to stderr
        kconfig: echo stdin to stdout if either is redirected
        kconfig: remove check_stdin()
        kconfig: remove 'config*' pattern from .gitignnore
        kconfig: show '?' prompt even if no help text is available
        kconfig: do not write choice values when their dependency becomes n
        coccinelle: deref_null: avoid useless computation
        coccinelle: devm_free: reduce false positives
        kbuild: clang: disable unused variable warnings only when constant
        kconfig: Warn if help text is blank
        nios2: kconfig: Remove blank help text
        arm: vt8500: kconfig: Remove blank help text
        MIPS: kconfig: Remove blank help text
        MIPS: BCM63XX: kconfig: Remove blank help text
        lib/Kconfig.debug: Remove blank help text
        Staging: rtl8192e: kconfig: Remove blank help text
        Staging: rtl8192u: kconfig: Remove blank help text
        mmc: kconfig: Remove blank help text
        ...
      9a61df9e