Sean Christopherson 6735150b69 KVM: Use syscore_ops instead of reboot_notifier to hook restart/shutdown ... Use syscore_ops.shutdown to disable hardware virtualization during a reboot instead of using the dedicated reboot_notifier so that KVM disables virtualization _after_ system_state has been updated. This will allow fixing a race in KVM's handling of a forced reboot where KVM can end up enabling hardware virtualization between kernel_restart_prepare() and machine_restart(). Rename KVM's hook to match the syscore op to avoid any possible confusion from wiring up a "reboot" helper to a "shutdown" hook (neither "shutdown nor "reboot" is completely accurate as the hook handles both). Opportunistically rewrite kvm_shutdown()'s comment to make it less VMX specific, and to explain why kvm_rebooting exists. Cc: Marc Zyngier <maz@kernel.org> Cc: Oliver Upton <oliver.upton@linux.dev> Cc: James Morse <james.morse@arm.com> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Zenghui Yu <yuzenghui@huawei.com> Cc: kvmarm@lists.linux.dev Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com> Cc: Anup Patel <anup@brainfault.org> Cc: Atish Patra <atishp@atishpatra.org> Cc: kvm-riscv@lists.infradead.org Signed-off-by: Sean Christopherson <seanjc@google.com> Acked-by: Marc Zyngier <maz@kernel.org> Message-Id: <20230512233127.804012-2-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2023-05-19 13:56:25 -04:00
..
async_pf.c	KVM: Add helpers to wake/query blocking vCPU	2021-12-08 04:24:54 -05:00
async_pf.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 504	2019-06-19 17:09:56 +02:00
binary_stats.c	KVM: stats: remove dead stores	2021-08-13 03:35:15 -04:00
coalesced_mmio.c	KVM: Destroy target device if coalesced MMIO unregistration fails	2023-02-01 11:25:05 -08:00
coalesced_mmio.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
dirty_ring.c	KVM: Support dirty ring in conjunction with bitmap	2022-11-10 13:11:58 +00:00
eventfd.c	KVM: x86/ioapic: Resample the pending state of an IRQ when unmasking	2023-03-27 10:13:28 -04:00
irqchip.c	KVM: replace direct irq.h inclusion	2022-11-09 12:31:37 -05:00
Kconfig	KVM: Opt out of generic hardware enabling on s390 and PPC	2022-12-29 15:48:37 -05:00
kvm_main.c	KVM: Use syscore_ops instead of reboot_notifier to hook restart/shutdown	2023-05-19 13:56:25 -04:00
kvm_mm.h	kvm: Remove the unused macro KVM_MMU_READ_{,UN}LOCK()	2022-12-27 06:00:51 -05:00
Makefile.kvm	KVM: Reinstate gfn_to_pfn_cache with invalidation support	2022-01-07 10:44:44 -05:00
pfncache.c	KVM: Skip unnecessary "unmap" if gpc is already valid during refresh	2022-11-30 19:25:24 +00:00
vfio.c	kvm/vfio: Fix potential deadlock on vfio group_lock	2023-01-20 08:50:05 -07:00
vfio.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00