On Mon, Jul 13, 2026 at 6:33 AM Inochi Amaoto <[email protected]> wrote: > > This patchset based on the patchset "RISC-V: KVM: Add Zicfiss/Zicfilp > support". > > The patch includes all the function of original patchset from Quan: > adding the Svadu/Zicfiss/Zicfilp FWFT for the RISC-V KVM. And this > patchset already passes the KVM unit test. > > Test with the patch applied > https://lore.kernel.org/all/[email protected]/ > > Changed from v5: > - https://lore.kernel.org/kvm/[email protected]/ > patch 1, 5: > 1. Switch to csr_read()/csr_write() to update csr > patch 8: > 1. Fix the macro name. > > Changed from v4: > - https://lore.kernel.org/kvm/[email protected]/ > patch 1: > 1. Use NACL for csr update > 2. Check ISA mapping before cleaning the ADUE bit > patch 4: > 1. Clear the zicfiss csr during a VCPU reset > 2. Add zicfiss csr to num_csr_regs() > patch 6: > 1. Cleanup SPELP after redirecting the trap > patch 7: > 1. Use interrupt bit instead of number for masking/unmasking > patch 8: > 1. Add missing entry for the test > 2. Fix the wrong comment. > > Changed from v3: > - https://lore.kernel.org/kvm/[email protected]/ > 1. rebase to the v7.2-rc1 > 2. Tested with the updated Svadu patch > 3. Remove the dependency as it is already merged. > > Changed from v2: > - https://lore.kernel.org/kvm/[email protected]/ > 1. rebase with Yong-Xuan's patch set > 2. Add SSP CSR context switch/set/get > 3. Move the software-check exception set/unset into FWFT > 4. Only delegate software-check exception when Zicfiss/Zicfilp is enabled. > 5. Make KVM SBI_FWFT_PTE_AD_HW_UPDATING depends on both Svadu and Svade > enabled. > > Changed from Quan's v1: > - https://lore.kernel.org/kvm/[email protected]/ > 1. rebase to the latest master. > 2. Split Svadu change as separate patch > 3. Fix all build error from the original series > 4. Remove the Svadu check in kvm_riscv_vcpu_config_ran_once() and in > favor of the FWFT. > 5. Remove the LPE/SSE setting bit in kvm_riscv_vcpu_config_ran_once() > (kvm_riscv_vcpu_setup_config() in original patchset) > > Inochi Amaoto (8): > RISC-V: KVM: Add support for Svadu FWFT features > KVM: riscv: selftests: add Svadu FWFT extension to get-reg-list test > RISC-V: KVM: Allow Zicfiss/Zicfilp extensions for Guest/VM > RISC-V: KVM: Add ssp context save/restore > RISC-V: KVM: Handle software-check exits for VCPU > RISC-V: KVM: Delegate SPELP bit to VS/VU mode if landing pad is > enabled. > RISC-V: KVM: Add support for control-flow integrity FWFT features > KVM: riscv: selftests: add Zicfiss/Zicfilp extension to get-reg-list > test > > arch/riscv/include/asm/csr.h | 1 + > arch/riscv/include/asm/kvm_host.h | 7 + > arch/riscv/include/uapi/asm/kvm.h | 13 ++ > arch/riscv/kvm/isa.c | 2 + > arch/riscv/kvm/vcpu.c | 7 + > arch/riscv/kvm/vcpu_exit.c | 11 ++ > arch/riscv/kvm/vcpu_onereg.c | 68 ++++++- > arch/riscv/kvm/vcpu_sbi_fwft.c | 183 ++++++++++++++++++ > .../selftests/kvm/riscv/get-reg-list.c | 90 +++++++++ > 9 files changed, 380 insertions(+), 2 deletions(-) > > -- > 2.55.0 >
I have taken care of my comments in PATCH1 and PATCH5 at the time of merging this series. Queued this series for Linux-7.3 Thanks, Anup
