From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f74.google.com (mail-wm1-f74.google.com [209.85.128.74]) (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 8F1063FB05A for ; Mon, 29 Jun 2026 09:36:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782725773; cv=none; b=bGuowmpb+Iy7cE4zAP8qALuff58wxQ4wtBiFp3SvtRDTvEbSpzOoahn/DjCedER91kq8dn5DgKyABtr8sn8y2+FcLj7iaL5KLrp1dg3Weu6CJZq/r254lgdYOaYZ/RqPSoWULgNaBqOgbTIJSMtSBGVWf8u2XKvfsxDDGskf5Sg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782725773; c=relaxed/simple; bh=oNRpShBxgkbXhsXuYvh148o1iOD2h7+fq50CawMhWZM=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=pnNAE+v9zp8DheK1adRH+yLEps76DAzKmjF8FQY9CNJtfSq7GciNX4av4vYf61fER/0hQYRBxt5oz4xfOQhn1X9bYGR/HQmH2YO4TQlhpq/kTit4OSGdlzDskGDdewRhyxFAbD8kleZY8oB7qbAWHWLlPIqhS05S9UKsrkxOyCA= 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=kOoDiYgq; arc=none smtp.client-ip=209.85.128.74 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="kOoDiYgq" Received: by mail-wm1-f74.google.com with SMTP id 5b1f17b1804b1-4938c67308fso10568105e9.2 for ; Mon, 29 Jun 2026 02:36:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782725769; x=1783330569; 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=kOoDiYgq+RBiWok6JdYDl8xGSz41WqHa4d2gLMXD0fduUjyIeS/P7hJ2ajhdEDADY2 iZK64hZUuHRdod30npOuESLZNCn5uuzddMxn92OefQNXOXTt+ncm4cMprbzxyUrAwN4/ ryYME5hXSxdswXO5+bji6t0zBU5JY/Gj5xj3fbn9dCjGlo7FZA/Z9fWAbcbw3IigwgnJ FNTnZQq3F8U8bg289P3HjV3Ka9KMzHnvUrKl0nLahAfKmy4RbDyYrvmoOU1KMsnS3Idz uN3VV3l+DWc2lHTen0EotRyuDTF3Mp5xz8AN3XFmN6EKYWHq68w6Tc2PCjfUiOjRqQDG HIQA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782725769; x=1783330569; 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=dCHh1jDuP6RYlWfhCGxap99citav4minF9cBmwK/y1TAApdfG2PIMQfE7RZdDqSWH0 rjLXUQXRK98VRQP5NIivz0Ekc1CaxvjdgA4g5Nrg8/j8csrsKfDZWrb+grRZ0EfgZflJ 6/3hDDGgvCvD6U6N6N3V6HfIXtvz86njkqNE6Emq+p71+oKncXsm1Nhfuzk5hk98oXcp F2zWEIFJOFGjprRv2zJxXXoO3TEjturjic9Gnux6MLwxb/gRKr0kt6iQAlezBPyWloPT hpP6nKhFMLMbWfGCVVOlovdLj7Ouvl2LLZh8e2fZqMwvjq6IqMaSaaRnFOZTLOm8VDx7 DztA== X-Forwarded-Encrypted: i=1; AFNElJ8Am8W7CIs5ZRl6wJBj0zBonS+aa8Hr0WgUzXNQTC4kUFL9n1rU1+ucHPz7RdkL6fNys/Sak25zkEWqgpY=@vger.kernel.org X-Gm-Message-State: AOJu0Yz+XMP05xf/3qhWQspBWOoxJop7WyLvyiq8bkt1FHb/qVDznzF2 Jh+0420Ioj/0fBaJ3pTYNec1VjLoteU8US5rdpLU8hSFvcKOnSiALzJaze0sBIxMMLjVzW+uUbg NZLaeriRF4EIwmAnOhEddyTgF4L2TKw== X-Received: from wmbes26.prod.google.com ([2002:a05:600c:811a:b0:492:61fa:f2ce]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:154a:b0:493:a535:5527 with SMTP id 5b1f17b1804b1-493a5355530mr93865845e9.21.1782725768465; Mon, 29 Jun 2026 02:36:08 -0700 (PDT) Date: Mon, 29 Jun 2026 09:35:52 +0000 In-Reply-To: <20260629093558.2425257-1-sebastianene@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260629093558.2425257-1-sebastianene@google.com> X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260629093558.2425257-2-sebastianene@google.com> Subject: [PATCH v7 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