David Matlack a6816314af KVM: Introduce vcpu->wants_to_run ... Introduce vcpu->wants_to_run to indicate when a vCPU is in its core run loop, i.e. when the vCPU is running the KVM_RUN ioctl and immediate_exit was not set. Replace all references to vcpu->run->immediate_exit with !vcpu->wants_to_run to avoid TOCTOU races with userspace. For example, a malicious userspace could invoked KVM_RUN with immediate_exit=true and then after KVM reads it to set wants_to_run=false, flip it to false. This would result in the vCPU running in KVM_RUN with wants_to_run=false. This wouldn't cause any real bugs today but is a dangerous landmine. Signed-off-by: David Matlack <dmatlack@google.com> Link: https://lore.kernel.org/r/20240503181734.1467938-2-dmatlack@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>		2024-06-18 09:20:01 -07:00
..
aia_aplic.c	RISC-V: KVM: Fix APLIC in_clrip[x] read emulation	2024-03-26 09:40:55 +05:30
aia_device.c	RISC-V: KVM: Remove unneeded semicolon	2023-06-20 10:48:38 +05:30
aia_imsic.c	RISCV: KVM: update external interrupt atomically for IMSIC swfile	2023-12-13 11:59:52 +05:30
aia.c	RISC-V: KVM: Add perf sampling support for guests	2024-04-26 13:13:50 +05:30
Kconfig	kvm: replace __KVM_HAVE_READONLY_MEM with Kconfig symbol	2024-02-08 08:41:06 -05:00
main.c	RISC-V: KVM: Implement kvm_arch_vcpu_ioctl_set_guest_debug()	2024-04-08 14:06:27 +05:30
Makefile	kbuild: use $(src) instead of $(srctree)/$(src) for source directory	2024-05-10 04:34:52 +09:00
mmu.c	KVM: delete .change_pte MMU notifier callback	2024-04-11 13:18:27 -04:00
tlb.c	riscv: Rearrange hwcap.h and cpufeature.h	2023-11-09 10:15:51 -08:00
vcpu_exit.c	RISC-V: KVM: Handle breakpoint exits for VCPU	2024-04-08 14:06:27 +05:30
vcpu_fp.c	riscv: Rearrange hwcap.h and cpufeature.h	2023-11-09 10:15:51 -08:00
vcpu_insn.c	RISC-V: KVM: Forward SEED CSR access to user space	2024-03-06 20:53:32 +05:30
vcpu_onereg.c	RISC-V: KVM: Add perf sampling support for guests	2024-04-26 13:13:50 +05:30
vcpu_pmu.c	RISC-V: KVM: Improve firmware counter read function	2024-04-26 13:13:54 +05:30
vcpu_sbi_base.c	RISC-V: KVM: Add ONE_REG interface to enable/disable SBI extensions	2023-04-21 17:38:44 +05:30
vcpu_sbi_hsm.c	RISCV: KVM: Introduce vcpu->reset_cntx_lock	2024-04-22 10:39:03 +05:30
vcpu_sbi_pmu.c	RISC-V: KVM: Improve firmware counter read function	2024-04-26 13:13:54 +05:30
vcpu_sbi_replace.c	RISC-V: KVM: Make SBI uapi consistent with ISA uapi	2023-12-29 12:31:44 +05:30
vcpu_sbi_sta.c	RISC-V: KVM: Rename the SBI_STA_SHMEM_DISABLE to a generic name	2024-04-22 11:13:52 +05:30
vcpu_sbi_v01.c	RISC-V: KVM: Modify SBI extension handler to return SBI error code	2023-02-07 20:35:45 +05:30
vcpu_sbi.c	RISCV: KVM: Introduce mp_state_lock to avoid lock inversion	2024-04-22 10:37:11 +05:30
vcpu_switch.S	riscv: kvm: use ".L" local labels in assembly when applicable	2023-12-29 12:31:33 +05:30
vcpu_timer.c	RISC-V: KVM: do not EOPNOTSUPP in set KVM_REG_RISCV_TIMER_REG	2023-08-08 17:25:49 +05:30
vcpu_vector.c	RISC-V: KVM: add 'vlenb' Vector CSR	2023-12-29 12:31:54 +05:30
vcpu.c	KVM: Introduce vcpu->wants_to_run	2024-06-18 09:20:01 -07:00
vm.c	RISC-V: KVM: Implement kvm_arch_vcpu_ioctl_set_guest_debug()	2024-04-08 14:06:27 +05:30
vmid.c	RISC-V: KVM: Drop the _MASK suffix from hgatp.VMID mask defines	2023-04-21 17:45:44 +05:30