From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f74.google.com (mail-wr1-f74.google.com [209.85.221.74]) (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 1169240D565 for ; Tue, 23 Jun 2026 11:54:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782215653; cv=none; b=tpEt3QwfRkn5URSHePTYzfU+Dz2vO9YSJsbbp4RHp4FFHPZLLbr09foM/sZ6HVVRo6rUDDvItPKIDYeUdFSt9AOJpKSMpEjfSttCJfN1MC+7zkAcUY3A7H9L9Yz9EXtnj/6Ve4GunHuOwsM+TPPoLAdOtJ1eRe5fgjJGGOILRoQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782215653; c=relaxed/simple; bh=8v4h4upt/DlWEAwVkLzvUb1pYxEdS/Zgh2jISDAPSt4=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=G4jleywoGhGiVc7fi2IedErxkWDcNUu25WHAl7860NoW6vhhIC1pzixkkTG3NbR0osDMwgu/A4YQp+jtsQkzOFEs3Kb7jq6ST16L6Zig/RZgaTlMr5mkzO97BLiVPT0XPpDFaD0KNolIu81YR4SZeZu9ciaUizH5qeHO6diertg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--sebastianene.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=Hd5rUBci; arc=none smtp.client-ip=209.85.221.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--sebastianene.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Hd5rUBci" Received: by mail-wr1-f74.google.com with SMTP id ffacd0b85a97d-4619ee2bb93so3255957f8f.1 for ; Tue, 23 Jun 2026 04:54:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782215650; x=1782820450; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=QS4Tc9DEF1sakhdO+oEzT9jcpMtmCqHU665RCgQbU7E=; b=Hd5rUBciXKV9tbpkMrA2ngp8HU90T3L5BHoxs4JOS3q0sh8cDrLEz/cPDKLKE86Mmc Otn0/a6rlB1aP7U1ImQjGFnKdE6eAmKgD316G47hEwBnVIWi2NVudNlHFsGMUF0sa9Y6 thc4rNqd7HDk+ai63m/3J1U1bs0xXdNFMME/SDEMcAFw4BLqFLwLRez+RpYhadh4AMf4 HosOmHvS7szdigk/+5VMr7KSZeXAUr3r3LQMA6zMrAi6xHyDbU+OUb1KQJ23K7RFnyY7 RpxujPldzLYQRFx1hZL5gIYAmJ5NZJ75N5kjMEv1Oo/HbOm09fuz38bPzwZHllY8OewU nf3A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782215650; x=1782820450; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=QS4Tc9DEF1sakhdO+oEzT9jcpMtmCqHU665RCgQbU7E=; b=Zt0sOPPh5CRSRlb5Q2KqgqKu0Li58dLHeuL3tKzseE35pOU+Db20LmGM9dHYshfbEz 6Yw8vtRqzJ7XOkjl0d37iNqgIBRYpr0xS00dIQ472reauaUUmsoWMc+Mxw3P8uOywbYq izyVBVp0jU3zldEqy3AMhXtTqt5h4OA+NJf6tlgMzzd/Fsl+JRON4eRawT4xhnzGoS24 vgzhMh5xTFxmnGDiaGUh0UlFbnqSTwmLu+mxFrgy5uXlmKwegaM9br6ZbFd9gWq6OwCY JwZabh2WGm/hDOOkQ/21N1xTD20X/jwnTdrW3xaTf0rzDiAPzo7EqCGXAvtfsrXyEV2X 0lBw== X-Forwarded-Encrypted: i=1; AFNElJ+ihIDanIa0TQiGF/ntc9+Y8jTcT98uZqv8eg3jIChjrquQ2IRywdrOK09HeOYifdC/6pa4I+ZEGhqo6vI=@vger.kernel.org X-Gm-Message-State: AOJu0YyZuA7l51d0PrFVDxjIB3DCqIDn6XgtFlB60kaV1xOk72tQrZ/N pyrAxKqXnNYLl/lCn0zrwP9pEF3FofwSPYyBholHZVWpqM5hVJgKfM5BhgsfVGOs2Kgd/HUWTAs hFjUO5zx1mgKJxBdY6GLO4E1LqUPNJQ== X-Received: from wmpo6.prod.google.com ([2002:a05:600c:3386:b0:490:9d65:494e]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:6309:b0:490:b645:3213 with SMTP id 5b1f17b1804b1-4925b3ac32fmr36891085e9.19.1782215650250; Tue, 23 Jun 2026 04:54:10 -0700 (PDT) Date: Tue, 23 Jun 2026 11:53:49 +0000 In-Reply-To: <20260623115354.632361-1-sebastianene@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260623115354.632361-1-sebastianene@google.com> X-Mailer: git-send-email 2.55.0.rc0.786.g65d90a0328-goog Message-ID: <20260623115354.632361-3-sebastianene@google.com> Subject: [PATCH v5 2/7] KVM: arm64: Forward FFA_NOTIFICATION_BITMAP calls to Trustzone From: Sebastian Ene To: catalin.marinas@arm.com, maz@kernel.org, oupton@kernel.org, will@kernel.org Cc: joey.gouly@arm.com, korneld@google.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, android-kvm@google.com, mrigendra.chaubey@gmail.com, perlarsen@google.com, sebastianene@google.com, suzuki.poulose@arm.com, vdonnefort@google.com, yuzenghui@huawei.com Content-Type: text/plain; charset="UTF-8" Allow FF-A notification bitmap messages to be forwarded to Trustzone from the host kernel driver enforce checking for SBZ fields. Signed-off-by: Sebastian Ene Reviewed-by: Vincent Donnefort --- arch/arm64/kvm/hyp/nvhe/ffa.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/ffa.c b/arch/arm64/kvm/hyp/nvhe/ffa.c index 78bb043b33ee..cc10f48915fa 100644 --- a/arch/arm64/kvm/hyp/nvhe/ffa.c +++ b/arch/arm64/kvm/hyp/nvhe/ffa.c @@ -715,8 +715,6 @@ static bool ffa_call_supported(u64 func_id) case FFA_MEM_DONATE: case FFA_MEM_RETRIEVE_REQ: /* Optional notification interfaces added in FF-A 1.1 */ - case FFA_NOTIFICATION_BITMAP_CREATE: - case FFA_NOTIFICATION_BITMAP_DESTROY: case FFA_NOTIFICATION_BIND: case FFA_NOTIFICATION_UNBIND: case FFA_NOTIFICATION_SET: @@ -911,6 +909,27 @@ static void do_ffa_part_get(struct arm_smccc_1_2_regs *res, hyp_spin_unlock(&host_buffers.lock); } +static void do_ffa_notif_bitmap(struct arm_smccc_1_2_regs *res, + struct kvm_cpu_context *ctxt) +{ + DECLARE_REG(u32, func_id, ctxt, 0); + DECLARE_REG(u32, vmid, ctxt, 1); + struct arm_smccc_1_2_regs *args; + + if (ffa_check_unused_args_sbz(ctxt, func_id == FFA_NOTIFICATION_BITMAP_CREATE ? 3 : 2)) { + ffa_to_smccc_res(res, FFA_RET_INVALID_PARAMETERS); + return; + } + + if (vmid != HOST_FFA_ID) { + ffa_to_smccc_res(res, FFA_RET_INVALID_PARAMETERS); + return; + } + + args = (void *)&ctxt->regs.regs[0]; + hyp_smccc_1_2_smc(args, res); +} + bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt, u32 func_id) { struct arm_smccc_1_2_regs res; @@ -974,6 +993,10 @@ bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt, u32 func_id) case FFA_PARTITION_INFO_GET: do_ffa_part_get(&res, host_ctxt); goto out_handled; + case FFA_NOTIFICATION_BITMAP_CREATE: + case FFA_NOTIFICATION_BITMAP_DESTROY: + do_ffa_notif_bitmap(&res, host_ctxt); + goto out_handled; } if (ffa_call_supported(func_id)) -- 2.55.0.rc0.786.g65d90a0328-goog