linux-kernel - Re: [PATCH 5/9] RISC-V: KVM: Move sbi related struct and functions to kvm_vcpu

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Date:   Mon, 28 Nov 2022 13:06:05 -0800
From:   Atish Patra <atishp@...shpatra.org>
To:     Anup Patel <apatel@...tanamicro.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Andrew Jones <ajones@...tanamicro.com>,
        Anup Patel <anup@...infault.org>, kvm@...r.kernel.org,
        kvm-riscv@...ts.infradead.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/9] RISC-V: KVM: Move sbi related struct and functions to kvm_vcpu_sbi.h

On Mon, Nov 28, 2022 at 8:14 AM Anup Patel <apatel@...tanamicro.com> wrote:
>
> Just like asm/kvm_vcpu_timer.h, we should have all sbi related struct
> and functions in asm/kvm_vcpu_sbi.h.
>
> Signed-off-by: Anup Patel <apatel@...tanamicro.com>
> ---
>  arch/riscv/include/asm/kvm_host.h     | 10 ++--------
>  arch/riscv/include/asm/kvm_vcpu_sbi.h |  6 ++++++
>  2 files changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h
> index 6502f9099965..91c74b09a970 100644
> --- a/arch/riscv/include/asm/kvm_host.h
> +++ b/arch/riscv/include/asm/kvm_host.h
> @@ -16,6 +16,7 @@
>  #include <asm/hwcap.h>
>  #include <asm/kvm_vcpu_fp.h>
>  #include <asm/kvm_vcpu_insn.h>
> +#include <asm/kvm_vcpu_sbi.h>
>  #include <asm/kvm_vcpu_timer.h>
>
>  #define KVM_MAX_VCPUS                  1024
> @@ -94,10 +95,6 @@ struct kvm_arch {
>         struct kvm_guest_timer timer;
>  };
>
> -struct kvm_sbi_context {
> -       int return_handled;
> -};
> -
>  struct kvm_cpu_trap {
>         unsigned long sepc;
>         unsigned long scause;
> @@ -216,7 +213,7 @@ struct kvm_vcpu_arch {
>         struct kvm_csr_decode csr_decode;
>
>         /* SBI context */
> -       struct kvm_sbi_context sbi_context;
> +       struct kvm_vcpu_sbi_context sbi_context;
>
>         /* Cache pages needed to program page tables with spinlock held */
>         struct kvm_mmu_memory_cache mmu_page_cache;
> @@ -326,7 +323,4 @@ bool kvm_riscv_vcpu_has_interrupts(struct kvm_vcpu *vcpu, unsigned long mask);
>  void kvm_riscv_vcpu_power_off(struct kvm_vcpu *vcpu);
>  void kvm_riscv_vcpu_power_on(struct kvm_vcpu *vcpu);
>
> -int kvm_riscv_vcpu_sbi_return(struct kvm_vcpu *vcpu, struct kvm_run *run);
> -int kvm_riscv_vcpu_sbi_ecall(struct kvm_vcpu *vcpu, struct kvm_run *run);
> -
>  #endif /* __RISCV_KVM_HOST_H__ */
> diff --git a/arch/riscv/include/asm/kvm_vcpu_sbi.h b/arch/riscv/include/asm/kvm_vcpu_sbi.h
> index d4e3e600beef..f79478a85d2d 100644
> --- a/arch/riscv/include/asm/kvm_vcpu_sbi.h
> +++ b/arch/riscv/include/asm/kvm_vcpu_sbi.h
> @@ -14,6 +14,10 @@
>  #define KVM_SBI_VERSION_MAJOR 1
>  #define KVM_SBI_VERSION_MINOR 0
>
> +struct kvm_vcpu_sbi_context {
> +       int return_handled;
> +};
> +
>  struct kvm_vcpu_sbi_extension {
>         unsigned long extid_start;
>         unsigned long extid_end;
> @@ -31,7 +35,9 @@ void kvm_riscv_vcpu_sbi_forward(struct kvm_vcpu *vcpu, struct kvm_run *run);
>  void kvm_riscv_vcpu_sbi_system_reset(struct kvm_vcpu *vcpu,
>                                      struct kvm_run *run,
>                                      u32 type, u64 flags);
> +int kvm_riscv_vcpu_sbi_return(struct kvm_vcpu *vcpu, struct kvm_run *run);
>  const struct kvm_vcpu_sbi_extension *kvm_vcpu_sbi_find_ext(unsigned long extid);
> +int kvm_riscv_vcpu_sbi_ecall(struct kvm_vcpu *vcpu, struct kvm_run *run);
>
>  #ifdef CONFIG_RISCV_SBI_V01
>  extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_v01;
> --
> 2.34.1
>


Reviewed-by: Atish Patra <atishp@...osinc.com>
-- 
Regards,
Atish