linux-kernel - Re: [PATCH 2/7] RISC-V: KVM: Extend ONE_REG to enable/disable multiple ISA extensions

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Message-ID: <20230713-3dd9e72ecd9f7926a2035f59@orel>
Date:   Thu, 13 Jul 2023 13:27:08 +0200
From:   Andrew Jones <ajones@...tanamicro.com>
To:     Anup Patel <apatel@...tanamicro.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Atish Patra <atishp@...shpatra.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Samuel Ortiz <sameo@...osinc.com>, kvm@...r.kernel.org,
        kvm-riscv@...ts.infradead.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/7] RISC-V: KVM: Extend ONE_REG to enable/disable
 multiple ISA extensions

On Wed, Jul 12, 2023 at 09:40:42PM +0530, Anup Patel wrote:
> Currently, the ISA extension ONE_REG interface only allows enabling or
> disabling one extension at a time. To improve this, we extend the ISA
> extension ONE_REG interface (similar to SBI extension ONE_REG interface)
> so that KVM user space can enable/disable multiple extensions in one
> ioctl.
> 
> Signed-off-by: Anup Patel <apatel@...tanamicro.com>
> ---
>  arch/riscv/include/uapi/asm/kvm.h |   9 ++
>  arch/riscv/kvm/vcpu_onereg.c      | 153 ++++++++++++++++++++++++------
>  2 files changed, 133 insertions(+), 29 deletions(-)
>

Reviewed-by: Andrew Jones <ajones@...tanamicro.com>