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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
..
boot Sort of on the quieter side this time, which is probably due more 2017-05-10 13:38:18 -07:00
common ARM/clk: move the ICST library to drivers/clk 2017-04-07 11:58:12 +02:00
configs ARM: SoC defconfig updates 2017-05-09 09:58:15 -07:00
crypto crypto: arm/aes-neonbs - resolve fallback cipher at runtime 2017-03-09 18:34:16 +08:00
firmware
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include KVM: arm/arm64: Simplify active_change_prepare and plug race 2017-05-23 12:48:22 +02:00
kernel arm64 2nd set of updates for 4.12: 2017-05-11 11:27:54 -07:00
kvm KVM: arm: Restore banked registers and physical timer access on hyp_panic() 2017-05-16 09:54:24 +02:00
lib new helper: uaccess_kernel() 2017-03-28 16:43:25 -04:00
mach-alpine ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-artpec ARM: ARTPEC-6: add select MFD_SYSCON to MACH_ARTPEC6 2016-11-26 00:06:34 +01:00
mach-asm9260
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mach-aspeed ARM: aspeed: Select pinctrl drivers 2017-01-10 22:36:06 +11:00
mach-at91 ARM: at91: move SoC detection to its own driver 2017-03-31 20:36:10 +02:00
mach-axxia ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-bcm ARM: brcmstb: Enable ARCH_HAS_HOLES_MEMORYMODEL 2017-03-15 14:57:41 -07:00
mach-berlin ARM: 8646/1: mmu: decouple VECTORS_BASE from Kconfig 2017-02-28 11:06:12 +00:00
mach-clps711x
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mach-cns3xxx
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mach-davinci ARM: SoC platform updates 2017-05-09 09:49:36 -07:00
mach-digicolor
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mach-dove
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mach-ebsa110
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mach-efm32
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mach-ep93xx ARM: ep93xx: Register ts73xx-fpga manager driver for TS-7300 2017-03-17 15:10:48 +09:00
mach-exynos Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-02-28 11:50:53 -08:00
mach-footbridge clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
mach-gemini ARM: gemini: don't select SERIAL_OF_PLATFORM 2017-03-24 22:12:42 +01:00
mach-highbank
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mach-hisi ARM: hisi: fix error return code in hip04_smp_init() 2017-03-28 15:30:54 +01:00
mach-imx ARM: SoC driver updates 2017-05-09 10:01:15 -07:00
mach-integrator ARM: SoC platform updates for v4.10 2016-12-15 15:39:02 -08:00
mach-iop13xx Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mach-iop32x
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mach-iop33x
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mach-ixp4xx scripts/spelling.txt: add regsiter -> register spelling mistake 2017-05-08 17:15:13 -07:00
mach-keystone ARM: keystone: Drop PM domain support for k2g 2017-04-04 08:59:28 -07:00
mach-ks8695
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mach-lpc18xx
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mach-lpc32xx ARM: SoC platform updates for v4.10 2016-12-15 15:39:02 -08:00
mach-mediatek ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-meson
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mach-mmp ARM: mmp: let clk_disable() return immediately if clk is NULL 2017-03-30 17:38:34 +02:00
mach-moxart irqchip/faraday: Replace moxa with ftintc010 2017-04-07 10:36:30 +01:00
mach-mv78xx0 ARM: mv78xx0: fix possible PCI buffer overflow 2017-01-27 17:52:57 +01:00
mach-mvebu Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-02-28 11:50:53 -08:00
mach-mxs ARM: mxs: add support for I2SE Duckbill 2 boards 2017-04-10 21:25:50 +08:00
mach-netx
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mach-nomadik
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mach-nspire
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mach-omap1 ARM: OMAP: PM: Drop useless checks for PM_SUSPEND_STANDBY 2017-03-06 10:38:19 -08:00
mach-omap2 Sort of on the quieter side this time, which is probably due more 2017-05-10 13:38:18 -07:00
mach-orion5x ARM: orion5x: only call into phylib when available 2017-03-30 17:30:39 +02:00
mach-oxnas ARM: oxnas: remove redundant select CPU_V6K 2017-03-20 10:13:45 +01:00
mach-picoxcell
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mach-prima2 ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-pxa ARM: pxa/raumfeld: fix compile error in rotary controller resources 2017-04-18 11:28:38 -07:00
mach-qcom
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mach-realview ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-rockchip Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-02-28 11:50:53 -08:00
mach-rpc sched/headers: Prepare for new header dependencies before moving code to <linux/sched/mm.h> 2017-03-02 08:42:28 +01:00
mach-s3c24xx Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-02-28 11:50:53 -08:00
mach-s3c64xx regulator: arizona-ldo1: Move pdata into a separate structure 2017-04-25 16:36:32 +01:00
mach-s5pv210 Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-02-28 11:50:53 -08:00
mach-sa1100 ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-shmobile ARM: 8660/1: shmobile: r7s72100: Enable L2 cache 2017-03-17 10:01:27 +00:00
mach-socfpga ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-spear ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-sti ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-stm32 ARM: stm32: Add a new SOC - STM32H743 2017-03-24 11:37:24 +01:00
mach-sunxi ARM: sunxi: Select PM_OPP 2017-03-06 07:37:41 +01:00
mach-tango ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-tegra soc/tegra: Move Tegra flowctrl driver 2017-04-04 15:48:04 +02:00
mach-u300
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mach-uniphier
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mach-ux500 ARM: SoC: late DT updates for v4.11 2017-03-03 16:15:48 -08:00
mach-versatile
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mach-vexpress ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-vt8500
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mach-w90x900 ARM: w90x900: let clk_disable() return immediately if clk is NULL 2017-03-30 17:37:19 +02:00
mach-zx ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mach-zynq ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol 2017-02-28 11:06:10 +00:00
mm IOMMU Updates for Linux v4.12 2017-05-09 15:15:47 -07:00
net arm: use set_memory.h header 2017-05-08 17:15:13 -07:00
nwfpe sched/headers: Move task_struct::signal and task_struct::sighand types and accessors into <linux/sched/signal.h> 2017-03-03 01:43:37 +01:00
oprofile
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plat-iop clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
plat-omap
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plat-orion ARM: orion5x: only call into phylib when available 2017-03-30 17:30:39 +02:00
plat-pxa
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plat-samsung dmaengine: pl330: remove pdata based initialization 2017-03-28 21:37:48 +05:30
plat-versatile ARM: plat-versatile: remove stale clock header 2017-04-07 11:57:57 +02:00
probes arm: kprobes: Align stack to 8-bytes in test code 2017-03-21 16:24:19 +00:00
tools ARM: wire up statx syscall 2017-03-10 10:15:15 +00:00
vdso
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vfp sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
xen xen: Implement EFI reset_system callback 2017-05-02 12:06:50 +02:00
Kconfig ARM: SoC platform updates 2017-05-09 09:49:36 -07:00
Kconfig-nommu ARM: 8635/1: nommu: allow enabling REMAP_VECTORS_TO_RAM 2017-01-10 23:32:54 +00:00
Kconfig.debug arch: Move CONFIG_DEBUG_RODATA and CONFIG_SET_MODULE_RONX to be common 2017-02-07 12:32:52 -08:00
Makefile arm: Use full path in KBUILD_IMAGE definition 2017-03-20 22:42:20 +09:00