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 78F153E44F8 for ; Fri, 26 Jun 2026 07:45:59 +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=1782459960; cv=none; b=iii5jZTBOL/frcbqKVAPb8+oMWSV3uXSJU4arfrnEUos37wBZzGKU5m1ME+GBQUW8u7No0fJxNgJT/57QEditU1zUsnq7WMk48IEcBhxuko4640GKdl9qa9R/QjmF+6E9cDouX65Ctl8HQYzD6K0YlMg3gyS0MJoEKKuafoqOTo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782459960; c=relaxed/simple; bh=oNRpShBxgkbXhsXuYvh148o1iOD2h7+fq50CawMhWZM=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=eDLzC2nHA8ZyOTcQUX/yrvwo5/uhchk6MqAyqkgSzYY41c03AOJqKAhRfBV27zWLQ8SKauOmx+/xQo4Eit+INgjjNsGAuGCZRTotiSRpmGWxUmlVnZixCRLxn7u/m2IPOtMq9aFjICuL6IwJmNq3Mxp221SQE96Z9Q5xhM8Rnsg= 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=aimhbBan; 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="aimhbBan" Received: by mail-wr1-f74.google.com with SMTP id ffacd0b85a97d-46e4153b193so754445f8f.1 for ; Fri, 26 Jun 2026 00:45:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782459958; x=1783064758; 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=Jo7XiKMHdspymNDo6dR1D3/Gy/nMI+SU7DuWBG2vcCM=; b=aimhbBan75hM33FlrJBH+wcUGe31dR41/1xkfU8PztSDkyXNpo8AyiT7zxRUs0UE3k X+xgOv2OlFDPdewZCTXCmvcuXR5F9CweQe4x0vZNOthtiIHpPpSHs2VBLgQ8TjgKYxOX EhuVtZDs3GJTNXuhlerXm7dk1xuv8wh4/ldfpe6d3aSCNRmwqf+2CUivJa4GwtaBggmk WhgveyzJCwvo+yYW5WplUXkQVVLJzRBawZ/r7MiwIMfUNi8zfbIQ5Av/6aZuyyVNqefl x4zb4ogVU8WPpXODyLv6gEEVpIPMTzRFCui707ZgUE+d+Xhw+qqf5rdalK7cgcNxj4FP DXew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782459958; x=1783064758; 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=Jo7XiKMHdspymNDo6dR1D3/Gy/nMI+SU7DuWBG2vcCM=; b=Vj0W9s6b6NJfaNyTgly0d3cLEPLd5HHXuej8M1SJpuuKpzqBN7bonnwQuDamKEf6Dx c0ffmeRPajZ5z7iU+KBcWmwllwF/dlcG+QSB9O9+ECGvFCT8G+33aQBSC5BWsUyxyoWT 8JTZT2KGd+TjvNs7+VmvU0MRkWiSYuxgGUz7RZlmAmag9fxy8nnKHRf9WDvmhDzQEkDS XBQggBxeC3QO9Yry2OKHjjQvZBl7P/0YLKEkaY5ETJenw6wGsAvD2+z6peIW9h7y03Fy o4aqR+vvG/pdjKQBQXBVSwhhGcrzuk0ht1pJydKVdZh6r/I96fFGgJKSjGRly6J7ci/P sZ8w== X-Forwarded-Encrypted: i=1; AHgh+RoKsp+zb7prL6P7BFrWS5M2kV3cOukhtL2GpdsMkcUuPJuLMvodGjpGQyrYN4NDixXEIW7jKEDBht9muF4=@vger.kernel.org X-Gm-Message-State: AOJu0Yyfr+ne8yojWkvpWVOR1aVMKsA7RDY73KQQ5Cw14Q67+c0W4rS1 9nsalQJCZsGxlMRRRFWi4yccOGGyIf3Xhw4Ki6z7jOGwnfq1I+jXYrWeLYOloJ5ZZmSIo7cMiw7 9hWWgvbRs/CpKwOvtYYLwHv4Bt62v0w== X-Received: from wraz16.prod.google.com ([2002:a05:6000:4690:b0:46d:a402:82a8]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a5d:5f4d:0:b0:460:395c:7404 with SMTP id ffacd0b85a97d-46da9aceb40mr8969961f8f.20.1782459957735; Fri, 26 Jun 2026 00:45:57 -0700 (PDT) Date: Fri, 26 Jun 2026 07:45:39 +0000 In-Reply-To: <20260626074545.433234-1-sebastianene@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260626074545.433234-1-sebastianene@google.com> X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260626074545.433234-2-sebastianene@google.com> Subject: [PATCH v6 1/7] 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 and enforce the host vmid check. Signed-off-by: Sebastian Ene Reviewed-by: Vincent Donnefort --- arch/arm64/kvm/hyp/nvhe/ffa.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/ffa.c b/arch/arm64/kvm/hyp/nvhe/ffa.c index 1af722771178..ecc13b795f2c 100644 --- a/arch/arm64/kvm/hyp/nvhe/ffa.c +++ b/arch/arm64/kvm/hyp/nvhe/ffa.c @@ -676,8 +676,6 @@ 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: @@ -862,6 +860,21 @@ 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, vmid, ctxt, 1); + struct arm_smccc_1_2_regs *args; + + 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; @@ -920,6 +933,10 @@ 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.rc0.799.gd6f94ed593-goog