From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f47.google.com (mail-pj1-f47.google.com [209.85.216.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B886F37C93C for ; Mon, 6 Jul 2026 02:12:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.47 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783303963; cv=none; b=SI9q2dFghV6qSw7kvkQjkOFHQQuix/CqZfKpcdnfdCeTXZ/cjiTCp64q3Ycufuapm2xWWBKnTtDOFWgVALyhr3LOFsedF+fXfbK4Kz+bXoG75G7AJaDDE7P8CI63rg5jkgxTd8gDiqUOWgTKmKLNAyjcCHKapyG2Hfl3ekl2opk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783303963; c=relaxed/simple; bh=aiDZ+54LfaP8u1o9K4MiqtZMkaRby4kAEKPeVxysb44=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=U8suPknLEtBMUnMu4u/LlOFwfpULMS/S5OpOwq+KthenjjuxncdiZfIuzKYYH9OyxOJhoSykYkevnrVBNAM5rOfEBAX5O0c1obQmZxT7spOnxdvim5yw1oaoBBx7gjzQmWDSZ60tu/KuczUYGy9XUmDVQkl+d1Uh64REVPyxVLw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=qh+favLt; arc=none smtp.client-ip=209.85.216.47 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="qh+favLt" Received: by mail-pj1-f47.google.com with SMTP id 98e67ed59e1d1-381b831d535so2671044a91.0 for ; Sun, 05 Jul 2026 19:12:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1783303958; x=1783908758; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=1SEkM1NCzGGDiH3CjwqUYg+RpOTMUxR/dI++pF9WMd4=; b=qh+favLtRTUo7IYtWYQseHHE1ddAFmeDqtJsK2zYmeIdZMi/yup5qStKjGsUuXHePq mYAWhXlptO8GBvLiFjSta0NvX8wBETvgWZLYBUfqEXW0Z3CeWk6gqtiRnW1k/BY/WJ76 yudHVnmbywY9laRzBepTzWZKDBK0caj6F+YgpRpSfzraSdhagcH15dLwFTmfaCXewm/7 SDpoBXOYKzFk/K2BFLeJr1D50eAQOQ1ZWw2EYvDnA3tipLOB4+d00IfBlOTGv7i8xYLz hseoX9Vgbe/jbuKUxGh3+Z085dQ2lRylv3KTmBXg2J0XDMRHkQH1E/VBYRN4kjAl1OLD NRvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783303958; x=1783908758; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=1SEkM1NCzGGDiH3CjwqUYg+RpOTMUxR/dI++pF9WMd4=; b=dH2xsYQ5ND0r5MRQcRG8/kU+WOreTYdB54JV2FI9iYhfuwct9lMGBxOtWPp2CgoJpy 7jr8DAROGXsADEvNXWHGKm7QxbMmP7Raxn3e0rBHkN5OBIdePbpJNoATilutTsdN55Pm 1aEwxnETImJ0lruQCZPrpWBDhLg10y1BwL44PhhbqkhPU1eq/J/p1cQQV9z4dQXCHvz8 ZIaDI4u477RJGPmPV1IvdqKy0Gi5PlDb0/6JkAcvFne8uA1Z30wmyqALq8d0nB8YfrM3 yheWniSFBWgREyjN+BIgY7HGCaeARvJ+zGgomDWoAlX37iaDOJoYeJcNCTXPEEvZuObn AOEQ== X-Forwarded-Encrypted: i=1; AHgh+Rq6E0iPxfcZOR/y5tGd8AtFSpwXTrfsBgDiFtw8sL0jM+fIu2PtBPL7X2MoMi8w0CGZKPNu9aC7IQftPA4=@vger.kernel.org X-Gm-Message-State: AOJu0Yz3PBHn1/VuJtRYER0dl5B7FxeTbNOAsq8Ac2d7JiiBVOGbAX2A gxTlTHkpDUJlF4t/7CVpjq1C/Noy1txBn6tQKdtOyUTLuxtZQsk4Hw0m X-Gm-Gg: AfdE7cmrYACT4o1qsOQ5KCA7HmKm4HJWx+lP89ZGGu0u3mwWC/STzzIUbCU/vC1wfNo 5k2DikXm9kIy7KNzQavbIbnVbXjK6QaYQcIbKlwRg00mJhkZICH5rzjHbK4zBBjGNZHH5YdOeM0 UtA5/F/r1nVXQ7L5jcwJ+dXfT11bztKCR3Yp/km/IAhLh1vdDS4yxvTfy2D12B7du7YromLaSvF arfpFu0tpvbwwecsTHhZCCJ1YsnXGcMj44w13puVN3PSh59Ol1rQ+lu7FSO3bwh4LPzsInpZCl+ atEBtjDHwuHFKJTFMNVlmVI+3jwE9aWD5OmzOF2jutvYam5WUW3vyGrEYmP5abc8JtV5FFY/yZt WLGa0o30dkSHDYYu2edr7reeuRyjiG+j2INYKKR0sLxt7knGBUi5N/jrDZMvoyhTE X-Received: by 2002:a17:90b:4d0f:b0:381:21c1:75c0 with SMTP id 98e67ed59e1d1-38280e98e25mr8543507a91.15.1783303958078; Sun, 05 Jul 2026 19:12:38 -0700 (PDT) Received: from localhost ([2001:da8:7001:11::cb]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-38127c1c68bsm4006978a91.7.2026.07.05.19.12.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Jul 2026 19:12:37 -0700 (PDT) From: Inochi Amaoto To: Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: Inochi Amaoto , kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Yixun Lan , Longbin Li Subject: [PATCH v2 2/3] RISC-V: KVM: Add SBI FWFT validation support Date: Mon, 6 Jul 2026 10:11:51 +0800 Message-ID: <20260706021154.210289-3-inochiama@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260706021154.210289-1-inochiama@gmail.com> References: <20260706021154.210289-1-inochiama@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Since the KVM SBI has extension parameters validation support, implement it for the SBI FWFT support. Signed-off-by: Inochi Amaoto --- arch/riscv/kvm/vcpu_sbi_fwft.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/riscv/kvm/vcpu_sbi_fwft.c b/arch/riscv/kvm/vcpu_sbi_fwft.c index bc514ae6521d..0aa1f9a57c90 100644 --- a/arch/riscv/kvm/vcpu_sbi_fwft.c +++ b/arch/riscv/kvm/vcpu_sbi_fwft.c @@ -604,6 +604,30 @@ static void kvm_sbi_ext_fwft_reset(struct kvm_vcpu *vcpu) } } +static void kvm_sbi_ext_fwft_validate(struct kvm_vcpu *vcpu) +{ + struct kvm_sbi_fwft *fwft = vcpu_to_fwft(vcpu); + const struct kvm_sbi_fwft_feature *feature; + struct kvm_sbi_fwft_config *conf; + int i; + + for (i = 0; i < ARRAY_SIZE(features); i++) { + feature = &features[i]; + conf = &fwft->configs[i]; + if (!conf->supported) + continue; + + if (!feature->supported || feature->supported(vcpu)) + continue; + + conf->enabled = false; + conf->flags = 0; + + if (feature->reset) + feature->reset(vcpu); + } +} + static unsigned long kvm_sbi_ext_fwft_get_reg_count(struct kvm_vcpu *vcpu) { unsigned long max_reg_count = sizeof(struct kvm_riscv_sbi_fwft) / sizeof(unsigned long); @@ -756,6 +780,7 @@ const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_fwft = { .init = kvm_sbi_ext_fwft_init, .deinit = kvm_sbi_ext_fwft_deinit, .reset = kvm_sbi_ext_fwft_reset, + .validate = kvm_sbi_ext_fwft_validate, .state_reg_subtype = KVM_REG_RISCV_SBI_FWFT, .get_state_reg_count = kvm_sbi_ext_fwft_get_reg_count, .get_state_reg_id = kvm_sbi_ext_fwft_get_reg_id, -- 2.55.0