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alistair23-linux/arch/arm64/include/asm
Christoffer Dall abd7229626 KVM: arm/arm64: Simplify active_change_prepare and plug race
We don't need to stop a specific VCPU when changing the active state,
because private IRQs can only be modified by a running VCPU for the
VCPU itself and it is therefore already stopped.

However, it is also possible for two VCPUs to be modifying the active
state of SPIs at the same time, which can cause the thread being stuck
in the loop that checks other VCPU threads for a potentially very long
time, or to modify the active state of a running VCPU.  Fix this by
serializing all accesses to setting and clearing the active state of
interrupts using the KVM mutex.

Reported-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
2017-05-23 12:48:22 +02:00
..
xen arm/arm64: xen: Move shared architecture headers to include/xen/arm 2016-12-02 11:49:55 -08:00
Kbuild treewide: move set_memory_* functions away from cacheflush.h 2017-05-08 17:15:13 -07:00
acenv.h ARM64 / ACPI: Get RSDP and ACPI boot-time tables 2015-03-25 11:49:30 +00:00
acpi.h arm64: add function to get a cpu's MADT GICC table 2017-04-11 16:29:54 +01:00
alternative.h arm64: Fix circular include of asm/lse.h through linux/jump_label.h 2016-11-05 20:59:06 +00:00
arch_gicv3.h arm64: sysreg: subsume GICv3 sysreg definitions 2017-03-09 15:29:45 +00:00
arch_timer.h arm64: arch_timer: Allow erratum matching with ACPI OEM information 2017-04-07 11:22:10 +01:00
arm-cci.h arm-cci: Get rid of secure transactions for PMU driver 2015-03-27 13:44:35 +00:00
asm-offsets.h
asm-uaccess.h arm64: entry: improve data abort handling of tagged pointers 2017-05-09 17:26:59 +01:00
assembler.h arm64 updates for 4.11: 2017-02-22 10:46:44 -08:00
atomic.h locking/atomic: Remove linux/atomic.h:atomic_fetch_or() 2016-06-16 10:48:32 +02:00
atomic_ll_sc.h locking/atomic, arch/arm64: Implement atomic{,64}_fetch_{add,sub,and,andnot,or,xor}{,_relaxed,_acquire,_release}() 2016-06-16 10:48:21 +02:00
atomic_lse.h arm64: atomic_lse: match asm register sizes 2017-05-09 17:47:17 +01:00
barrier.h arm64: ensure extension of smp_store_release value 2017-05-09 17:45:04 +01:00
bitops.h arch,arm64: Convert smp_mb__*() 2014-04-18 11:40:33 +02:00
bitrev.h ARM: 8189/1: arm64:add bitrev.h file to support rbit instruction 2014-12-22 16:47:32 +00:00
boot.h arm64: allow kernel Image to be loaded anywhere in physical memory 2016-02-18 18:16:53 +00:00
brk-imm.h arm64: move brk immediate argument definitions to separate header 2016-02-23 17:43:25 +00:00
bug.h arm64 updates for 4.12: 2017-05-05 12:11:37 -07:00
cache.h arm64: cache: Identify VPIPT I-caches 2017-03-20 16:17:02 +00:00
cacheflush.h treewide: decouple cacheflush.h and set_memory.h 2017-05-08 17:15:14 -07:00
checksum.h arm64: Implement optimised IP checksum helpers 2016-06-21 15:09:11 +01:00
clocksource.h arm/arm64: arch_timer: Use archdata to indicate vdso suitability 2016-09-23 17:19:25 +01:00
cmpxchg.h arm64: xchg: hazard against entire exchange variable 2017-05-09 17:44:50 +01:00
compat.h sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
compiler.h
cpu.h arm64: cpuinfo: Expose MIDR_EL1 and REVIDR_EL1 to sysfs 2016-07-12 16:09:37 +01:00
cpu_ops.h ARM64: kernel: unify ACPI and DT cpus initialization 2015-05-19 16:09:29 +01:00
cpucaps.h arm64: cpu_errata: Add capability to advertise Cortex-A73 erratum 858921 2017-04-07 11:22:08 +01:00
cpufeature.h arm64: cpufeature: Make ID reg accessor naming less counterintuitive 2017-04-04 16:55:41 +01:00
cpuidle.h arm64: kernel: rename __cpu_suspend to keep it aligned with arm 2015-06-19 14:46:39 +01:00
cputype.h arm64: Define Cortex-A73 MIDR 2017-04-07 11:22:08 +01:00
current.h arm64: remove redundant header file in current.h 2017-03-30 19:15:37 +01:00
dcc.h arm64: dcc: simplify accessors 2016-09-09 11:41:13 +01:00
debug-monitors.h arm64: Add uprobe support 2016-11-07 18:15:21 +00:00
device.h xen/arm,arm64: fix xen_dma_ops after 815dd18 "Consolidate get_dma_ops..." 2017-05-02 11:14:42 +02:00
dma-mapping.h xen/arm,arm64: fix xen_dma_ops after 815dd18 "Consolidate get_dma_ops..." 2017-05-02 11:14:42 +02:00
dmi.h arm64: dmi: Add SMBIOS/DMI support 2014-11-05 09:03:25 +01:00
efi.h efi/arm-stub: Round up FDT allocation to mapping size 2017-04-05 12:27:24 +02:00
elf.h arm64: introduce mm context flag to keep 32 bit task information 2016-11-07 18:15:21 +00:00
esr.h arm64: Add CNTFRQ_EL0 trap handler 2017-04-24 12:22:25 +01:00
exception.h arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections 2016-03-25 16:37:42 -07:00
exec.h arm64: suspend: Reconfigure PSTATE after resume from idle 2016-10-20 09:50:54 +01:00
extable.h arm64: add extable.h 2017-03-28 18:23:23 -04:00
fb.h
fixmap.h arm64: Remove fixmap include fragility 2016-02-26 15:22:53 +00:00
fpsimd.h arm64: add support for kernel mode NEON in interrupt context 2014-05-08 11:31:57 +02:00
fpsimdmacros.h arm64: Avoid breakage caused by .altmacro in fpsimd save/restore macros 2015-01-29 17:24:39 +00:00
ftrace.h arm64: Fix misspellings in comments. 2016-03-04 18:19:17 +00:00
futex.h arm64: Factor out PAN enabling/disabling into separate uaccess_* macros 2016-11-21 17:33:47 +00:00
hardirq.h arm64: kdump: implement machine_crash_shutdown() 2017-04-05 18:29:15 +01:00
hugetlb.h arm64: hugetlb: add support for PTE contiguous bit 2015-12-21 17:26:00 +00:00
hw_breakpoint.h arm64: cpufeature: Make ID reg accessor naming less counterintuitive 2017-04-04 16:55:41 +01:00
hwcap.h arm64/HWCAP: Use system wide safe values 2015-10-21 15:35:58 +01:00
hypervisor.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
insn.h bpf, arm64: implement jiting of BPF_XADD 2017-05-02 15:04:50 -04:00
io.h ARM64: Implement pci_remap_cfgspace() interface 2017-04-24 13:53:13 -05:00
irq.h arm64: remove irq_count and do_softirq_own_stack() 2015-12-21 17:26:01 +00:00
irq_work.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
irqflags.h arm64: debug: remove unused local_dbg_{enable, disable} macros 2016-07-19 16:59:40 +01:00
jump_label.h locking/static_keys: Add a new static_key interface 2015-08-03 11:34:15 +02:00
kasan.h arm64: move kernel image to base of vmalloc area 2016-02-18 18:16:44 +00:00
kernel-pgtable.h arm64: Introduce uaccess_{disable,enable} functionality based on TTBR0_EL1 2016-11-21 18:48:53 +00:00
kexec.h arm64: kdump: implement machine_crash_shutdown() 2017-04-05 18:29:15 +01:00
kgdb.h arm64: kgdb: Match pstate size with gdbserver protocol 2016-06-16 19:20:51 +01:00
kprobes.h kprobes: move kprobe declarations to asm-generic/kprobes.h 2017-02-27 18:43:45 -08:00
kvm_arm.h arm64: KVM: Save/restore the host SPE state when entering/leaving a VM 2017-02-02 18:33:01 +00:00
kvm_asm.h arm64: KVM: Convert __cpu_reset_hyp_mode to using __hyp_reset_vectors 2017-04-09 07:49:22 -07:00
kvm_coproc.h arm64: KVM: common infrastructure for handling AArch32 CP14/CP15 2014-07-11 04:57:44 -07:00
kvm_emulate.h arm64: KVM: Fix decoding of Rt/Rt2 when trapping AArch32 CP accesses 2017-05-02 09:53:46 +02:00
kvm_host.h KVM: arm/arm64: Simplify active_change_prepare and plug race 2017-05-23 12:48:22 +02:00
kvm_hyp.h arm64: KVM: Inject a vSerror if detecting a bad GICV access at EL2 2016-09-08 12:53:00 +02:00
kvm_mmio.h KVM: arm/arm64: Export mmio_read/write_bus 2016-05-20 15:39:42 +02:00
kvm_mmu.h * ARM: HYP mode stub supports kexec/kdump on 32-bit; improved PMU 2017-05-08 12:37:56 -07:00
kvm_psci.h ARM/ARM64: KVM: Make kvm_psci_call() return convention more flexible 2014-04-30 04:18:57 -07:00
linkage.h arm64: fix alignment padding in assembly code 2012-10-20 11:12:01 +01:00
lse.h arm64: do not trace atomic operations 2017-02-06 19:00:23 +00:00
memblock.h
memory.h arm64 updates for 4.11: 2017-02-22 10:46:44 -08:00
mmu.h arm64: alternatives: apply boot time fixups via the linear mapping 2017-03-23 13:54:19 +00:00
mmu_context.h sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
mmzone.h arm64, numa: Add NUMA support for arm64 platforms. 2016-04-15 18:06:09 +01:00
module.h arm64: module: split core and init PLT sections 2017-04-26 12:31:00 +01:00
neon.h arm64: Support systems without FP/ASIMD 2016-11-16 18:05:10 +00:00
numa.h ACPI/NUMA: Do not map pxm to node when NUMA is turned off 2016-12-15 11:32:32 +01:00
page.h arm64: move {PAGE,CONT}_SHIFT into Kconfig 2016-06-03 10:57:18 +01:00
paravirt.h arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops 2015-12-21 14:40:54 +00:00
pci.h PCI: Add pci_mmap_resource_range() and use it for ARM64 2017-04-20 08:47:47 -05:00
percpu.h arm64: factor out current_stack_pointer 2016-11-11 18:25:43 +00:00
perf_event.h arm64 updates for 4.10: 2016-12-13 16:39:21 -08:00
pgalloc.h arm64: get rid of superfluous __GFP_REPEAT 2016-06-24 17:23:52 -07:00
pgtable-hwdef.h arm64: simplify sysreg manipulation 2016-09-09 11:43:50 +01:00
pgtable-prot.h arm64: Introduce execute-only page access permissions 2016-08-25 18:00:29 +01:00
pgtable-types.h arch, mm: convert all architectures to use 5level-fixup.h 2017-03-09 11:48:47 -08:00
pgtable.h arm64: mm: set the contiguous bit for kernel mappings where appropriate 2017-03-23 14:09:23 +00:00
probes.h arm64: Remove reference to asm/opcodes.h 2016-12-05 10:42:34 +00:00
proc-fns.h arm64: kill flush_cache_all() 2015-05-19 15:27:42 +01:00
processor.h arm64: struct debug_info: Check CONFIG_HAVE_HW_BREAKPOINT 2017-03-22 17:21:38 +00:00
ptdump.h arm64: dump: Add checking for writable and exectuable pages 2016-11-07 18:15:04 +00:00
ptrace.h arm64: ptrace: add XZR-safe regs accessors 2017-02-15 12:20:29 +00:00
seccomp.h arm64: add seccomp support 2014-11-28 10:24:59 +00:00
sections.h arm64: mmu: apply strict permissions to .init.text and .init.data 2017-03-23 13:54:50 +00:00
shmparam.h arm64: fix COMPAT_SHMLBA definition for large pages 2015-12-02 14:00:10 +00:00
signal32.h arm64: Use get_signal() signal_setup_done() 2014-08-06 12:56:16 +02:00
smp.h arm64: kdump: implement machine_crash_shutdown() 2017-04-05 18:29:15 +01:00
smp_plat.h arm64: remove dead-code depending on CONFIG_UP_LATE_INIT 2015-07-29 18:32:09 +01:00
sparsemem.h arm64: mm: update max pa bits to 48 2014-08-19 20:23:02 +01:00
spinlock.h arm64 updates for 4.9: 2016-10-03 08:58:35 -07:00
spinlock_types.h arm64: include linux/types.h in asm/spinlock_types.h 2015-07-27 11:09:34 +01:00
stack_pointer.h arm64: factor out current_stack_pointer 2016-11-11 18:25:43 +00:00
stackprotector.h arm64: Add CONFIG_CC_STACKPROTECTOR 2014-07-09 12:23:48 +01:00
stacktrace.h arm64: ftrace: fix a stack tracer's output under function graph tracer 2015-12-21 17:26:02 +00:00
stage2_pgtable-nopmd.h kvm: arm64: Get rid of fake page table levels 2016-04-21 14:58:21 +02:00
stage2_pgtable-nopud.h kvm: arm64: Get rid of fake page table levels 2016-04-21 14:58:21 +02:00
stage2_pgtable.h kvm: arm64: Get rid of fake page table levels 2016-04-21 14:58:21 +02:00
stat.h UAPI: (Scripted) Disintegrate arch/arm64/include/asm 2012-10-11 11:05:13 +01:00
string.h arm64: add KASAN support 2015-10-12 17:46:36 +01:00
suspend.h arm64: move sp_el0 and tpidr_el1 into cpu_suspend_ctx 2016-11-11 18:25:44 +00:00
sync_bitops.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
syscall.h arm64: Add audit support 2014-07-10 11:06:00 +01:00
sysreg.h Merge branch 'arm64/common-sysreg' of git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux into for-next/core 2017-04-04 18:08:47 +01:00
system_misc.h arm64: cleanup unused UDBG_* define 2016-08-31 13:45:46 +01:00
thread_info.h arm64: Introduce uaccess_{disable,enable} functionality based on TTBR0_EL1 2016-11-21 18:48:53 +00:00
timex.h arm64: kernel: compiling issue, need delete read_current_timer() 2013-06-10 17:58:20 +01:00
tlb.h arm64: tlbflush: avoid flushing when fullmm == 1 2015-10-07 11:56:21 +01:00
tlbflush.h arm64: Work around Falkor erratum 1009 2017-02-01 15:41:50 +00:00
topology.h arm64, numa: Add NUMA support for arm64 platforms. 2016-04-15 18:06:09 +01:00
traps.h arm64: Create sections.h 2016-08-25 18:00:29 +01:00
uaccess.h arm64 2nd set of updates for 4.12: 2017-05-11 11:27:54 -07:00
unistd.h Remove compat_sys_getdents64() 2017-04-17 12:52:22 -04:00
unistd32.h Remove compat_sys_getdents64() 2017-04-17 12:52:22 -04:00
uprobes.h arm64: Add uprobe support 2016-11-07 18:15:21 +00:00
vdso.h
vdso_datapage.h arm64: Add support for CLOCK_MONOTONIC_RAW in clock_gettime() vDSO 2016-07-12 16:06:32 +01:00
virt.h arm64: hyp-stub/KVM: Kill __hyp_get_vectors 2017-04-09 07:49:34 -07:00
word-at-a-time.h Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00