- 22 12月, 2013 6 次提交
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由 Christoffer Dall 提交于
Define CPU interface offsets for the GICC_ABPR, GICC_APR, and GICC_IIDR registers. Define distributor registers for the GICD_SPENDSGIR and the GICD_CPENDSGIR. KVM/ARM needs to know about these definitions to fully support save/restore of the VGIC. Also define some masks and shifts for the various GICH_VMCR fields. Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Christoffer Dall 提交于
Support setting the distributor and cpu interface base addresses in the VM physical address space through the KVM_{SET,GET}_DEVICE_ATTR API in addition to the ARM specific API. This has the added benefit of being able to share more code in user space and do things in a uniform manner. Also deprecate the older API at the same time, but backwards compatibility will be maintained. Acked-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Christoffer Dall 提交于
Support creating the ARM VGIC device through the KVM_CREATE_DEVICE ioctl, which can then later be leveraged to use the KVM_{GET/SET}_DEVICE_ATTR, which is useful both for setting addresses in a more generic API than the ARM-specific one and is useful for save/restore of VGIC state. Adds KVM_CAP_DEVICE_CTRL to ARM capabilities. Note that we change the check for creating a VGIC from bailing out if any VCPUs were created, to bailing out if any VCPUs were ever run. This is an important distinction that shouldn't break anything, but allows creating the VGIC after the VCPUs have been created. Acked-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Christoffer Dall 提交于
Rework the VGIC initialization slightly to allow initialization of the vgic cpu-specific state even if the irqchip (the VGIC) hasn't been created by user space yet. This is safe, because the vgic data structures are already allocated when the CPU is allocated if VGIC support is compiled into the kernel. Further, the init process does not depend on any other information and the sacrifice is a slight performance degradation for creating VMs in the no-VGIC case. The reason is that the new device control API doesn't mandate creating the VGIC before creating the VCPU and it is unreasonable to require user space to create the VGIC before creating the VCPUs. At the same time move the irqchip_in_kernel check out of kvm_vcpu_first_run_init and into the init function to make the per-vcpu and global init functions symmetric and add comments on the exported functions making it a bit easier to understand the init flow by only looking at vgic.c. Acked-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Andre Przywara 提交于
For migration to work we need to save (and later restore) the state of each core's virtual generic timer. Since this is per VCPU, we can use the [gs]et_one_reg ioctl and export the three needed registers (control, counter, compare value). Though they live in cp15 space, we don't use the existing list, since they need special accessor functions and the arch timer is optional. Acked-by: NMarc Zynger <marc.zyngier@arm.com> Signed-off-by: NAndre Przywara <andre.przywara@linaro.org> Signed-off-by: NChristoffer Dall <christoffer.dall@linaro.org>
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由 Christoffer Dall 提交于
Initialize the cntvoff at kvm_init_vm time, not before running the VCPUs at the first time because that will overwrite any potentially restored values from user space. Cc: Andre Przywara <andre.przywara@linaro.org> Acked-by: NMarc Zynger <marc.zyngier@arm.com> Signed-off-by: NChristoffer Dall <christoffer.dall@linaro.org>
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- 21 12月, 2013 2 次提交
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由 Marcelo Tosatti 提交于
It is possible for __direct_map to be called on invalid root_hpa (-1), two examples: 1) try_async_pf -> can_do_async_pf -> vmx_interrupt_allowed -> nested_vmx_vmexit 2) vmx_handle_exit -> vmx_interrupt_allowed -> nested_vmx_vmexit Then to load_vmcs12_host_state and kvm_mmu_reset_context. Check for this possibility, let fault exception be regenerated. BZ: https://bugzilla.redhat.com/show_bug.cgi?id=924916Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Jan Kiszka 提交于
If kvm_get_dr or kvm_set_dr reports that it raised a fault, we must not advance the instruction pointer. Otherwise the exception will hit the wrong instruction. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 18 12月, 2013 1 次提交
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由 Jan Kiszka 提交于
It's a pathological case, but still a valid one: If L1 disables APIC virtualization and also allows L2 to directly write to the APIC page, we have to forcibly enable APIC virtualization while in L2 if the in-kernel APIC is in use. This allows to run the direct interrupt test case in the vmx unit test without x2APIC. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 13 12月, 2013 2 次提交
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由 Takuya Yoshikawa 提交于
Giving proper names to the 0 and 1 was once suggested. But since 0 is returned to the userspace, giving it another name can introduce extra confusion. This patch just explains the meanings instead. Signed-off-by: NTakuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Takuya Yoshikawa 提交于
Since the commit 15ad7146 ("KVM: Use the scheduler preemption notifiers to make kvm preemptible"), the remaining stuff in this function is a simple cond_resched() call with an extra need_resched() check which was there to avoid dropping VCPUs unnecessarily. Now it is meaningless. Signed-off-by: NTakuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 12 12月, 2013 10 次提交
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由 Paolo Bonzini 提交于
Merge tag 'kvm-s390-20131211' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-next Some further s390 patches for kvm-next. Various improvements and bugfixes in the signal processor handling. Document kvm support for diagnose (s390 hypercalls). And last but not least, fix a bug in the s390 ioeventfd backend that was causing us grief in scenarios with 4G+ memory.
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由 Jan Kiszka 提交于
We can easily emulate the HLT activity state for L1: If it decides that L2 shall be halted on entry, just invoke the normal emulation of halt after switching to L2. We do not depend on specific host features to provide this, so we can expose the capability unconditionally. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Gleb Natapov 提交于
VM_(ENTRY|EXIT)_CONTROLS vmcs fields are read/written on each guest entry but most times it can be avoided since values do not changes. Keep fields copy in memory to avoid unnecessary reads from vmcs. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Paolo Bonzini 提交于
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由 Dominik Dingel 提交于
The diagnose 500 subcode 3 contains the 32 bit subchannel id in bits 32-63 (counting from the left). As for other I/O instructions, bits 0-31 should be ignored and thus not be passed to kvm_io_bus_write_cookie(). This fixes a bug where the guest passed non-zero bits 0-31 which the host tried to interpret, leading to ioeventfd notification failures. Cc: stable@vger.kernel.org Signed-off-by: NDominik Dingel <dingel@linux.vnet.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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由 Thomas Huth 提交于
Just like the RESTART order, the START order also has to report BUSY while a STOP request is pending, to avoid that the START might be ignored due to a race condition between the STOP and the START order. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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由 Thomas Huth 提交于
When SIGP RESTART detected an illegal CPU address, there is no need to drop to userspace, we can return CC3 to the guest directly instead. Also renamed __sigp_restart() to sigp_check_callable() (since this is a better description of what the function is really doing) and moved a string specific to RESTART to the calling place instead, so that this function gets usable by other SIGP orders, too. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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由 Thomas Huth 提交于
This patch adds the missing SIGP order "conditional emergency signal" by calling the "emergency signal" SIGP handler if the required conditions are met. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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由 Thomas Huth 提交于
We've got a helper function for setting the condition code now, so let's use it in the SIGP handler, too. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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由 Cornelia Huck 提交于
Add some further documentation on the DIAGNOSE calls we support. Reviewed-by: NThomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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- 07 12月, 2013 2 次提交
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由 Qiaowei Ren 提交于
Some features, like Intel MPX, work only if the kernel uses eagerfpu model. So we should force eagerfpu on unless the user has explicitly disabled it. Add definitions for Intel MPX and add it to the supported list. [ hpa: renamed XSTATE_FLEXIBLE to XSTATE_LAZY and added comments ] Signed-off-by: NQiaowei Ren <qiaowei.ren@intel.com> Link: http://lkml.kernel.org/r/9E0BE1322F2F2246BD820DA9FC397ADE014A6115@SHSMSX102.ccr.corp.intel.comSigned-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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由 Qiaowei Ren 提交于
Define the Intel MPX (Memory Protection Extensions) CPU feature flag in the cpufeature list. Signed-off-by: NQiaowei Ren <qiaowei.ren@intel.com> Link: http://lkml.kernel.org/r/1386375658-2191-2-git-send-email-qiaowei.ren@intel.comSigned-off-by: NXudong Hao <xudong.hao@intel.com> Signed-off-by: NLiu Jinsong <jinsong.liu@intel.com> Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>
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- 30 11月, 2013 10 次提交
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由 Linus Torvalds 提交于
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git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64由 Linus Torvalds 提交于
Pull ARM64 fixes from Catalin Marinas: - Remove preempt_count modifications in the arm64 IRQ handling code since that's already dealt with in generic irq_enter/irq_exit - PTE_PROT_NONE bit moved higher up to avoid overlapping with the hardware bits (for PROT_NONE mappings which are pte_present) - Big-endian fixes for ptrace support - Asynchronous aborts unmasking while in the kernel - pgprot_writecombine() change to create Normal NonCacheable memory rather than Device GRE * tag 'arm64-stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: arm64: Move PTE_PROT_NONE higher up arm64: Use Normal NonCacheable memory for writecombine arm64: debug: make aarch32 bkpt checking endian clean arm64: ptrace: fix compat registes get/set to be endian clean arm64: Unmask asynchronous aborts when in kernel mode arm64: dts: Reserve the memory used for secondary CPU release address arm64: let the core code deal with preempt_count
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux由 Linus Torvalds 提交于
Pull s390 updates from Martin Schwidefsky: "One performance improvement and a few bug fixes. Two of the fixes deal with the clock related problems we have seen on recent kernels" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/mm: handle asce-type exceptions as normal page fault s390,time: revert direct ktime path for s390 clockevent device s390/time,vdso: convert to the new update_vsyscall interface s390/uaccess: add missing page table walk range check s390/mm: optimize copy_page s390/dasd: validate request size before building CCW/TCW request s390/signal: always restore saved runtime instrumentation psw bit
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux由 Linus Torvalds 提交于
Pull i2c fixes from Wolfram Sang: "Some easy but needed fixes for i2c drivers since rc1" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: bcm2835: Linking platform nodes to adapter nodes i2c: omap: raw read and write endian fix i2c: i2c-bcm-kona: Fix module build i2c: i2c-diolan-u2c: different usb endpoints for DLN-2-U2C i2c: bcm-kona: remove duplicated include i2c: davinci: raw read and write endian fix
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq由 Linus Torvalds 提交于
Pull workqueue fixes from Tejun Heo: "This contains one important fix. The NUMA support added a while back broke ordering guarantees on ordered workqueues. It was enforced by having single frontend interface with @max_active == 1 but the NUMA support puts multiple interfaces on unbound workqueues on NUMA machines thus breaking the ordered guarantee. This is fixed by disabling NUMA support on ordered workqueues. The above and a couple other patches were sitting in for-3.12-fixes but I forgot to push that out, so they ended up waiting a bit too long. My aplogies. Other fixes are minor" * 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: fix pool ID allocation leakage and remove BUILD_BUG_ON() in init_workqueues workqueue: fix comment typo for __queue_work() workqueue: fix ordered workqueues in NUMA setups workqueue: swap set_cpus_allowed_ptr() and PF_NO_SETAFFINITY
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata由 Linus Torvalds 提交于
Pull libata fixes from Tejun Heo: "libata device removal path was removing parent device node before its child, which is mostly harmless but triggers warning after recent sysfs changes. Rafael's patch fixes the order. Other than that, minor controller-specific fixes and device ID additions" * 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: ATA: Fix port removal ordering ahci: add Marvell 9230 to the AHCI PCI device list ata: fix acpi_bus_get_device() return value check pata_arasan_cf: add missing clk_disable_unprepare() on error path ahci: add support for IBM Akebono platform device
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup由 Linus Torvalds 提交于
Pull cgroup fixes from Tejun Heo: "Fixes for three issues. - cgroup destruction path could swamp system_wq possibly leading to deadlock. This actually seems to happen in the wild with memcg because memcg destruction path adds nested dependency on system_wq. Resolved by isolating cgroup destruction work items on its dedicated workqueue. - Possible locking context deadlock through seqcount reported by lockdep - Memory leak under certain conditions" * 'for-3.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: fix cgroup_subsys_state leak for seq_files cpuset: Fix memory allocator deadlock cgroup: use a dedicated workqueue for cgroup destruction
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound由 Linus Torvalds 提交于
Pull sound fixes from Takashi Iwai: "Quite a few HD-Audio fixes, a WUSB audio fix and a fix for FireWire audio. The HD-audio part contains a couple of fixes for the generic parser, and these are the only intrusive fixes. The rest are mostly device-specific fixes" * tag 'sound-3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - Add LFE chmap to ASUS ET2700 ALSA: hda - Initialize missing bass speaker pin for ASUS AIO ET2700 ALSA: hda - limit mic boost on Asus UX31[A,E] ALSA: hda - Check leaf nodes to find aamix amps ALSA: hda - Fix hp-mic mode without VREF bits ALSA: hda - Create Headhpone Mic Jack Mode when really needed ALSA: usb: use multiple packets per urb for Wireless USB inbound audio ALSA: hda - Enable mute/mic-mute LEDs for more Thinkpads with Conexant codec ALSA: hda - Drop bus->avoid_link_reset flag ALSA: hda/realtek - Set pcbeep amp for ALC668 ALSA: hda/realtek - Add support of ALC231 codec ALSA: firewire-lib: fix wrong value for FDF field as an empty packet
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs由 Linus Torvalds 提交于
Pull vfs dentry reference count fix from Al Viro. This fixes a possible inode_permission NULL pointer dereference (and other problems) that were due to the root dentry count being decremented too much. In commit 48a066e7 ("RCU'd vfsmounts") the placement of clearing the LOOKUP_RCU bit changed, and we then returned failure of incrementing the lockref on the parent dentry with LOOKUP_RCU cleared. But that meant we needed to go through the same cleanup routines that the later failures did wrt LOOKUP_ROOT and nd->root. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fix bogus path_put() of nd->root after some unlazy_walk() failures
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git://people.freedesktop.org/~airlied/linux由 Linus Torvalds 提交于
Pull drm qxl leak fix from Dave Airlie: "As usual 5 mins after I send a trivial pull fix I find a real bug! This fixes a memory leak and I'd like to get it into stable queue asap" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/qxl: fix memory leak in release list handling
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- 29 11月, 2013 7 次提交
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由 Catalin Marinas 提交于
PTE_PROT_NONE means that a pte is present but does not have any read/write attributes. However, setting the memory type like pgprot_writecombine() is allowed and such bits overlap with PTE_PROT_NONE. This causes mmap/munmap issues in drivers that change the vma->vm_pg_prot on PROT_NONE mappings. This patch reverts the PTE_FILE/PTE_PROT_NONE shift in commit 59911ca4 (ARM64: mm: Move PTE_PROT_NONE bit) and moves PTE_PROT_NONE together with the other software bits. Signed-off-by: NSteve Capper <steve.capper@linaro.org> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Tested-by: NSteve Capper <steve.capper@linaro.org> Cc: <stable@vger.kernel.org> # 3.11+
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由 Catalin Marinas 提交于
This provides better performance compared to Device GRE and also allows unaligned accesses. Such memory is intended to be used with standard RAM (e.g. framebuffers) and not I/O. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Al Viro 提交于
Failure to grab reference to parent dentry should go through the same cleanup as nd->seq mismatch. As it is, we might end up with caller thinking it needs to path_put() nd->root, with obvious nasty results once we'd hit that bug enough times to drive the refcount of root dentry all the way to zero... Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Dave Airlie 提交于
wow no idea how I got this far without seeing this, leaking the entries in the list makes kmalloc-64 slab grow. References: https://bugzilla.kernel.org/show_bug.cgi?id=65121 Cc: stable@vger.kernel.org Reported-by: NMatthew Stapleton <matthew4196@gmail.com> Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Matthew Leach 提交于
The current breakpoint instruction checking code for A32 is not endian clean. Fix this with appropriate byte-swapping when retrieving instructions. Signed-off-by: NMatthew Leach <matthew.leach@arm.com> Reviewed-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Matthew Leach 提交于
On a BE system the wrong half of the X registers is retrieved/written when attempting to get/set the value of aarch32 registers through ptrace. Ensure that types are the correct width so that the relevant casting occurs. Signed-off-by: NMatthew Leach <matthew.leach@arm.com> Reviewed-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio由 Linus Torvalds 提交于
Pull GPIO fixes from Linus Walleij: "Here us a bunch of patches for the v3.13 series. Most important stuff is related to fixes and documentation for the new GPIO descriptor API. If the diffstat is scary you'll notice most of it is to Documentation/*: - A big slew of documentation for the gpiod transition that happened in the merge window, no semantic effect, but we should provide proper documentation with the new API. - Fix flags related to the new API. - Fix to the find_chip_by_name() lookup function related to the new API. - Fix of_find_gpio() when not using device tree. - Bug fix for the TB10x direction setting. - Error path fixes from Dan Carpenter. - Nasty IRQdomain bug relating to taking an unitialized spinlock. - Minor fixes here and there" * tag 'gpio-v3.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio: bcm281xx: Fix return value of bcm_kona_gpio_get() gpio: pl061: move irqdomain initialization gpio: ucb1400: Add MODULE_ALIAS gpiolib: fix of_find_gpio() when OF not defined gpio: fix memory leak in error path gpio: rcar: NULL dereference on error in probe() gpio: msm: make msm_gpio.summary_irq signed for error handling gpio: mvebu: make mvchip->irqbase signed for error handling gpiolib: use dedicated flags for GPIO properties gpiolib: fix find_chip_by_name() Documentation: gpiolib: document new interface gpio: tb10x: Set output value before setting direction to output
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