From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7D2F8C433EF for ; Tue, 28 Dec 2021 06:20:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:Subject:Message-ID:Date:From: In-Reply-To:References:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=lpH2BLj2b15fkulcQ2ZwrrvPz3j5Qg6cLwjt365PsXY=; b=dZy3jLD4IIBn1N d1vsI+WIGV6ae9zXln3Ij04UmvzTPc7QUT4iWTxicJL+A94xjvtbB/IOC3xmTYZcYoM4ZOl0gh4Xl e9EZfN2YUcEy07TtUQ5ZC+J237liWxXpU3cjxRtF4YpM1impZhoe5XZWvoj46ldEjBFrXjXGwBjBi L8BbnpVARU686UKCvMsc89gLfkOlfNQ5iLg7ktTc3elqFgGT+WrThfiwNqO88rp1pk0Nosci1a/Pp LYIjMFZSsOrrFaRi4hZgOWFxMcBPstessPc6Vic1VnjTCvrS/y4CKR1HbQbiAWlAAHT7OpEqSlYi9 7nTv478wyvLpfSGOSs4A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n25qY-000FYY-L3; Tue, 28 Dec 2021 06:20:30 +0000 Received: from mail-wm1-x335.google.com ([2a00:1450:4864:20::335]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n25qW-000FXD-9i for linux-riscv@lists.infradead.org; Tue, 28 Dec 2021 06:20:29 +0000 Received: by mail-wm1-x335.google.com with SMTP id n10-20020a7bc5ca000000b00345c520d38eso9395207wmk.1 for ; Mon, 27 Dec 2021 22:20:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=brainfault-org.20210112.gappssmtp.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=O5m6I1+e/fTravXWaM/DR1a+IZkwqzGyxUYHprrFJVo=; b=bnLjTnAxvgWOVF84U5Yxqqzb7N8OpgqFseDIG18DsC2weLGdpYeiorRfvLme+3H3Wj e9z4Uph6f+N+cbnzqXE6ZU87HGt5QGpfcIRaMGKpUWTm7EQVOzEL6R/P11zFFmFGFlNY KRj+nMBRPsd/qw3NAET7uXBMsQggbAhusGYeUEekhMIN5jUmR1AdJY/1SkHlxNn3pD07 7GJC9WMCyBwenw3fpzAglpT8U7ceZENxBx1hpoosIJnnCUcusNkimv8wRDVrAqrsB41p bvbvOibSS1DHL0SqeWZGbBkxK/sKTfqmAukEjBHp/jrShKjZvwbPJf5m5YulHz6hzEcJ CSyg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=O5m6I1+e/fTravXWaM/DR1a+IZkwqzGyxUYHprrFJVo=; b=ZI2Vrrq4JXoxRQPOUeei60H7X1xWQUD4zeVT+gxAdXp/amAkAE95/uhm0ZxNwzt78o NO0m/KWT4g5Cm6M22IN7+Z62xZHFrTl7QVWHJheYYtHo8Lxyv0JnREW0NJUdF23BgS/Q GwEMs/KI4Or0uMdE8moGNsjNvzcmqYHeWJYb/lDbBIo51hPuOIB9GLE8EMMopuHYufAn 2aJqvKlUr7rMxL7m6YEZcJnqJ6eAjemzzdI6GGUIlLW8tfCKhVKj++CxDLaRlGhk/0rr YdnVwBdq5qmDlWRSDTN6LwjWCG68HeAoxRc2wzROyxPuIMl7uXASnb5sE51++tbwMq0E mdIQ== X-Gm-Message-State: AOAM530rFfPU4+v/VZgWtL/HYoiVr8yJFeHfs+/brwT/VUuPUme/JNjW gPLLeZwWtGGyhJAnOyQ+KveS5FfHCy02RDd2SEQPmQ== X-Google-Smtp-Source: ABdhPJxShEPXSHMDLpX+ZXACyVmaSjYjAuKiTpyen4bSDSjamxzNsqKq6fBZdoR4fZD7LmMdF4bKoMIrXSZydRh8fKs= X-Received: by 2002:a7b:c243:: with SMTP id b3mr15737850wmj.61.1640672425557; Mon, 27 Dec 2021 22:20:25 -0800 (PST) MIME-Version: 1.0 References: <20211224073604.1085464-1-anup.patel@wdc.com> <20211224073604.1085464-2-anup.patel@wdc.com> In-Reply-To: <20211224073604.1085464-2-anup.patel@wdc.com> From: Anup Patel Date: Tue, 28 Dec 2021 11:50:12 +0530 Message-ID: Subject: Re: [PATCH v4 1/4] RISC-V: KVM: Forward SBI experimental and vendor extensions To: Anup Patel Cc: Paolo Bonzini , Shuah Khan , Atish Patra , Palmer Dabbelt , Paul Walmsley , Albert Ou , Alistair Francis , KVM General , kvm-riscv@lists.infradead.org, linux-riscv , "linux-kernel@vger.kernel.org List" , linux-kselftest@vger.kernel.org, Atish Patra X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211227_222028_425527_2C0176CA X-CRM114-Status: GOOD ( 17.67 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Fri, Dec 24, 2021 at 1:06 PM Anup Patel wrote: > > The SBI experimental extension space is for temporary (or experimental) > stuff whereas SBI vendor extension space is for hardware vendor specific > stuff. Both these SBI extension spaces won't be standardized by the SBI > specification so let's blindly forward such SBI calls to the userspace. > > Signed-off-by: Anup Patel > Reviewed-and-tested-by: Atish Patra Queued this patch for 5.17 Thanks, Anup > --- > arch/riscv/kvm/vcpu_sbi.c | 4 ++++ > arch/riscv/kvm/vcpu_sbi_base.c | 27 +++++++++++++++++++++++++++ > 2 files changed, 31 insertions(+) > > diff --git a/arch/riscv/kvm/vcpu_sbi.c b/arch/riscv/kvm/vcpu_sbi.c > index f62d25bc9733..78aa3db76225 100644 > --- a/arch/riscv/kvm/vcpu_sbi.c > +++ b/arch/riscv/kvm/vcpu_sbi.c > @@ -46,6 +46,8 @@ extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_time; > extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_ipi; > extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_rfence; > extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_hsm; > +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental; > +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor; > > static const struct kvm_vcpu_sbi_extension *sbi_ext[] = { > &vcpu_sbi_ext_v01, > @@ -54,6 +56,8 @@ static const struct kvm_vcpu_sbi_extension *sbi_ext[] = { > &vcpu_sbi_ext_ipi, > &vcpu_sbi_ext_rfence, > &vcpu_sbi_ext_hsm, > + &vcpu_sbi_ext_experimental, > + &vcpu_sbi_ext_vendor, > }; > > void kvm_riscv_vcpu_sbi_forward(struct kvm_vcpu *vcpu, struct kvm_run *run) > diff --git a/arch/riscv/kvm/vcpu_sbi_base.c b/arch/riscv/kvm/vcpu_sbi_base.c > index d1ec08fe7289..4ecf377f483b 100644 > --- a/arch/riscv/kvm/vcpu_sbi_base.c > +++ b/arch/riscv/kvm/vcpu_sbi_base.c > @@ -70,3 +70,30 @@ const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_base = { > .extid_end = SBI_EXT_BASE, > .handler = kvm_sbi_ext_base_handler, > }; > + > +static int kvm_sbi_ext_forward_handler(struct kvm_vcpu *vcpu, > + struct kvm_run *run, > + unsigned long *out_val, > + struct kvm_cpu_trap *utrap, > + bool *exit) > +{ > + /* > + * Both SBI experimental and vendor extensions are > + * unconditionally forwarded to userspace. > + */ > + kvm_riscv_vcpu_sbi_forward(vcpu, run); > + *exit = true; > + return 0; > +} > + > +const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental = { > + .extid_start = SBI_EXT_EXPERIMENTAL_START, > + .extid_end = SBI_EXT_EXPERIMENTAL_END, > + .handler = kvm_sbi_ext_forward_handler, > +}; > + > +const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor = { > + .extid_start = SBI_EXT_VENDOR_START, > + .extid_end = SBI_EXT_VENDOR_END, > + .handler = kvm_sbi_ext_forward_handler, > +}; > -- > 2.25.1 > _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv