Steven Price c4d7c51845 KVM: arm64: Fix race when enabling KVM_ARM_CAP_MTE ... When enabling KVM_CAP_ARM_MTE the ioctl checks that there are no VCPUs created to ensure that the capability is enabled before the VM is running. However no locks are held at that point so it is (theoretically) possible for another thread in the VMM to create VCPUs between the check and actually setting mte_enabled. Close the race by taking kvm->lock. Reported-by: Alexandru Elisei <alexandru.elisei@arm.com> Fixes: 673638f434 ("KVM: arm64: Expose KVM_ARM_CAP_MTE") Signed-off-by: Steven Price <steven.price@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20210729160036.20433-1-steven.price@arm.com		2021-07-29 17:34:01 +01:00
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hyp	KVM: arm64: Fix off-by-one in range_is_memory	2021-07-29 17:33:04 +01:00
vgic	KVM: arm64: vgic: Implement SW-driven deactivation	2021-06-01 10:46:00 +01:00
Kconfig	kvm: Select SCHED_INFO instead of TASK_DELAY_ACCT	2021-05-12 11:43:24 +02:00
Makefile	KVM: stats: Add fd-based API to read binary stats data	2021-06-24 11:47:57 -04:00
arch_timer.c	KVM: arm64: timer: Add support for SW-based deactivation	2021-06-01 10:46:00 +01:00
arm.c	KVM: arm64: Fix race when enabling KVM_ARM_CAP_MTE	2021-07-29 17:34:01 +01:00
debug.c	Merge branch 'kvm-arm64/debug-5.13' into kvmarm-master/next	2021-04-13 15:34:15 +01:00
fpsimd.c	KVM: arm64: Save/restore SVE state for nVHE	2021-03-18 14:23:12 +00:00
guest.c	KVM/arm64 updates for v5.14.	2021-06-25 11:24:24 -04:00
handle_exit.c	KVM: arm64: Log source when panicking from nVHE hyp	2021-04-01 09:54:37 +01:00
hypercalls.c	KVM: arm64: Add support for the KVM PTP service	2021-04-07 16:33:20 +01:00
inject_fault.c	KVM: arm64: Move AArch32 exceptions over to AArch64 sysregs	2020-11-10 11:22:51 +00:00
irq.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422	2019-06-05 17:37:15 +02:00
mmio.c	KVM: arm64: Make kvm_skip_instr() and co private to HYP	2020-11-10 08:34:24 +00:00
mmu.c	KVM: arm64: Fix detection of shared VMAs on guest fault	2021-07-14 09:49:10 +01:00
perf.c	Merge branch 'kvm-arm64/kill_oprofile_dependency' into kvmarm-master/next	2021-04-22 13:41:49 +01:00
pmu-emul.c	KVM: arm64: Restore PMU configuration on first run	2021-06-18 14:18:37 +01:00
pmu.c	KVM: arm64: Disable PMU support in protected mode	2021-03-19 12:02:19 +00:00
psci.c	KVM: arm64: Convert ARCH_WORKAROUND_2 to arm64_get_spectre_v4_state()	2020-09-29 16:08:17 +01:00
pvtime.c	KVM: arm64: Use kvm_write_guest_lock when init stolen time	2020-12-03 19:02:18 +00:00
reset.c	KVM: arm64: Expose KVM_ARM_CAP_MTE	2021-06-22 14:08:06 +01:00
sys_regs.c	KVM: arm64: Expose KVM_ARM_CAP_MTE	2021-06-22 14:08:06 +01:00
sys_regs.h	Merge branch 'kvm-arm64/copro-no-more' into kvmarm-master/next	2020-11-27 11:33:16 +00:00
trace.h	KVM: arm64: Move virt/kvm/arm to arch/arm64	2020-05-16 15:03:59 +01:00
trace_arm.h	KVM: Move arm64's MMU notifier trace events to generic code	2021-04-17 08:30:56 -04:00
trace_handle_exit.h	KVM: arm64: Fix address truncation in traces	2020-09-04 10:53:48 +01:00
trng.c	KVM: arm64: Implement the TRNG hypervisor call	2021-01-25 22:19:31 +00:00
va_layout.c	KVM: arm64: Generate final CTR_EL0 value when running in Protected mode	2021-03-25 11:00:33 +00:00
vgic-sys-reg-v3.c	KVM: arm64: Drop is_aarch32 trap attribute	2020-11-10 11:22:52 +00:00