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linux/arch/riscv/kvm
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Atish Patra ff435a6273 RISC-V: KVM: Disable the kernel perf counter during configure 
[ Upstream commit bbb6224887 ]

The perf event should be marked disabled during the creation as
it is not ready to be scheduled until there is SBI PMU start call
or config matching is called with auto start. Otherwise, event add/start
gets called during perf_event_create_kernel_counter function.
It will be enabled and scheduled to run via perf_event_enable during
either the above mentioned scenario.

Fixes: 0cb74b65d2 ("RISC-V: KVM: Implement perf support without sampling")

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20250303-kvm_pmu_improve-v2-1-41d177e45929@rivosinc.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-04-10 14:39:11 +02:00
..
aia.c RISC-V: KVM: Fix csr_write -> csr_set for HVIEN PMU overflow bit 2024-12-27 14:01:57 +01:00
aia_aplic.c RISC-V: KVM: Fix APLIC in_clrip and clripnum write emulation 2024-12-05 14:02:08 +01:00
aia_device.c RISC-V: KVM: Share APLIC and IMSIC defines with irqchip drivers 2024-06-26 18:37:32 +05:30
aia_imsic.c RISCV: KVM: use raw_spinlock for critical section in imsic 2024-10-20 12:10:44 -04:00
Kconfig kvm: replace __KVM_HAVE_READONLY_MEM with Kconfig symbol 2024-02-08 08:41:06 -05:00
main.c KVM: Rename arch hooks related to per-CPU virtualization enabling 2024-09-04 11:02:33 -04:00
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
trace.h RISCV: KVM: add tracepoints for entry and exit events 2024-06-26 18:37:36 +05:30
vcpu.c ARM: 2024-07-20 12:41:03 -07:00
vcpu_exit.c RISC-V: KVM: Redirect AMO load/store access fault traps to guest 2024-06-26 18:37:41 +05:30
vcpu_fp.c riscv: Rearrange hwcap.h and cpufeature.h 2023-11-09 10:15:51 -08:00
vcpu_insn.c KVM: riscv: Support guest wrs.nto 2024-07-12 08:54:51 -07:00
vcpu_onereg.c RISC-V Patches for the 6.11 Merge Window, Part 1 2024-07-20 09:11:27 -07:00
vcpu_pmu.c RISC-V: KVM: Disable the kernel perf counter during configure 2025-04-10 14:39:11 +02:00
vcpu_sbi.c riscv: kvm: Fix out-of-bounds array access 2024-12-05 14:02:08 +01:00
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: Fix hart suspend_type use 2025-03-07 18:25:36 +01:00
vcpu_sbi_pmu.c RISC-V: KVM: Improve firmware counter read function 2024-04-26 13:13:54 +05:30
vcpu_sbi_replace.c riscv: KVM: Fix SBI TIME error generation 2025-03-07 18:25:37 +01:00
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_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
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