Atish Patra 16b0bde9a3 RISC-V: KVM: Add perf sampling support for guests ... KVM enables perf for guest via counter virtualization. However, the sampling can not be supported as there is no mechanism to enabled trap/emulate scountovf in ISA yet. Rely on the SBI PMU snapshot to provide the counter overflow data via the shared memory. In case of sampling event, the host first sets the guest's LCOFI interrupt and injects to the guest via irq filtering mechanism defined in AIA specification. Thus, ssaia must be enabled in the host in order to use perf sampling in the guest. No other AIA dependency w.r.t kernel is required. Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Atish Patra <atishp@rivosinc.com> Link: https://lore.kernel.org/r/20240420151741.962500-15-atishp@rivosinc.com Signed-off-by: Anup Patel <anup@brainfault.org>		2024-04-26 13:13:50 +05:30
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boot	RISC-V Patches for the 6.9 Merge Window	2024-03-22 10:41:13 -07:00
configs	RISC-V Patches for the 6.9 Merge Window	2024-03-22 10:41:13 -07:00
crypto	crypto: riscv - add vector crypto accelerated AES-CBC-CTS	2024-03-20 08:56:11 -07:00
errata	riscv: errata: Rename defines for Andes	2024-03-12 07:13:12 -07:00
include	RISC-V: KVM: Add perf sampling support for guests	2024-04-26 13:13:50 +05:30
kernel	RISC-V: KVM: Rename the SBI_STA_SHMEM_DISABLE to a generic name	2024-04-22 11:13:52 +05:30
kvm	RISC-V: KVM: Add perf sampling support for guests	2024-04-26 13:13:50 +05:30
lib	RISC-V Patches for the 6.9 Merge Window	2024-03-22 10:41:13 -07:00
mm	riscv: mm: Fix prototype to avoid discarding const	2024-03-26 08:26:43 -07:00
net	riscv, bpf: Fix kfunc parameters incompatibility between bpf and riscv abi	2024-03-25 11:39:31 -07:00
purgatory	riscv: Use SYM_*() assembly macros instead of deprecated ones	2023-11-06 09:42:47 -08:00
tools	riscv: Check relocations at compile time	2023-04-19 07:46:32 -07:00
Kbuild	RISC-V: hook new crypto subdir into build-system	2024-01-22 17:55:17 -08:00
Kconfig	RISC-V Patches for the 6.9 Merge Window	2024-03-22 10:41:13 -07:00
Kconfig.debug	riscv: Add tests for riscv module loading	2023-11-07 14:59:32 -08:00
Kconfig.errata	RISC-V Patches for the 6.8 Merge Window, Part 4	2024-01-20 11:06:04 -08:00
Kconfig.socs	riscv: dts: Move BUILTIN_DTB_SOURCE to common Kconfig	2024-03-06 00:08:32 +00:00
Makefile	riscv: compat_vdso: install compat_vdso.so.dbg to /lib/modules/*/vdso/	2024-03-26 14:08:02 -07:00
Makefile.postlink	kbuild: remove ARCH_POSTLINK from module builds	2023-10-28 21:10:08 +09:00