From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) (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 E36F643B6D2 for ; Wed, 29 Jul 2026 12:13:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785327215; cv=none; b=jnaSTWNLqW+qHSxt6a6cIv/JEtJOi2Z1gemT0/oESwQT80MGZd4LIxQpHIicB0A3i6JBXtuw3WuRN+TiDmGW1QdFfAJNGO2wtUO0601jYgIHWs56Sm0BYMuxDMbUkaiCYGeXhExP72HH1hVoKD6wBs4pV2mK3hh1o/CWtR5OVkk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785327215; c=relaxed/simple; bh=0vSlXApgAyjRAeE/Jq/97aOoxSyLLWWwUFaphULImKM=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=C0phsz6VQVvyXIwlzYQJ80CvT+D1hcQHDrmLBXPXR+ijAp9f3GjMiqGj9l3nNXRXJIKcx+3eGK3xlMYYnRc1AtA/nbmy5NuRlCChWRQxQBZGOEOM3Nc0sbnT8Pm5WsR7kfPIpHcOxHHLtfyxY1m/PTgpUFFhKJWkkpgz6J+6yqg= 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=D9fWc1Ay; arc=none smtp.client-ip=209.85.128.69 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="D9fWc1Ay" Received: by mail-wm1-f69.google.com with SMTP id 5b1f17b1804b1-4955fd77c18so6343535e9.2 for ; Wed, 29 Jul 2026 05:13:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1785327212; x=1785932012; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:from:to:cc:subject:date:message-id:reply-to :content-type; bh=thsyczRLbjXAiylyvIOhzxaR9c8IJTQiSChj+R7W6P4=; b=D9fWc1AyQu+pKq5CbCaydzYiP6z23rWSo51i5/QQ8ClHIvVXLZkd9d6HJkkEDsYJVF KupBgUpDFzm3/WyFawKVHBKyAIGZ6awE1dLfMfI6U9xokzhHiM0P9Jw1Lao+fiiUIBHG kJd48T28MHJIMeN/jZ8+ow6/Z2ykqD14i7NTbA/VtCYTBKbc0jxbeVEQOULcFtHH+iga 7MBZ5+Iqht3LP/5M/CM4HTxRhWy2BCzHfahjv6ylb+HGUuQNt6JKi/e1XE0zCcMisnGV 9RrlbTO1+obAuqN2jy49M1EgDrwQVHZj6wKENJpTYsXP2xuW6VbQqgUUQT0QvWrKfTkn mXaQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785327212; x=1785932012; h=content-type: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:content-type; bh=thsyczRLbjXAiylyvIOhzxaR9c8IJTQiSChj+R7W6P4=; b=Su5dAdj3XhOE2Wa9e7PSNDhvNGQCiT1rT76Y4k8xJKgXw9iRi78u8dgRlw2xiv4ZKi OWG0ANOfUqLuIUKmy9LFsyF+Jv5h9V5GweAPC6vHeE25ltpUTLq1jc4sIRSsL2HIScmG hTkCuilOZsDx8GIVOcLHScrGDLPqY4hidSHdIzNKAIN8VPExa7OlD5JAvCN/DH0Q8rtW yyrds+AH2fEuzzXxhiGtQiHpIWDpWzkBO6J0BQ2VLMqjf/oA9NgJ2l3SAY7XprkmUlI8 DE3loRJMJS1wLJmIAFRFoRnezo/vuMMm0s+eLZIcMVtg9f4iRkRAzgwmDL5/E60d5AiQ yYVQ== X-Forwarded-Encrypted: i=1; AHgh+RqBbnuQLtrNE47Ihgdoi3yAmCoBkO2/c797FFK2N+6XY/GDgBwoAwuB3lKq8+n+UuTLooEDNQOumGeQ/x8=@vger.kernel.org X-Gm-Message-State: AOJu0YwZ3yzH6nfqsNBHxioflHhcqVNVytz3bAWUJuEPVwkwA5oexLV2 cD5FZsi4O/n3Ii/gC/ikS9ZBKenw2by3sl2TJQBv7JKH7B7c6d7wiiF7naXfxLtmJ6n9kF84D0e v2PAMYr2MyLeL/RNaKQNs0PsyHTBR2g== X-Received: from wmby12.prod.google.com ([2002:a05:600c:c04c:b0:493:e006:3161]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:8010:b0:495:3f5e:e7a with SMTP id 5b1f17b1804b1-496c6588a7cmr78133495e9.34.1785327211938; Wed, 29 Jul 2026 05:13:31 -0700 (PDT) Date: Wed, 29 Jul 2026 12:13:01 +0000 In-Reply-To: <20260729121306.1519473-2-sebastianene@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260729121306.1519473-2-sebastianene@google.com> X-Mailer: git-send-email 2.55.0.487.gaf234c4eb3-goog Message-ID: <20260729121306.1519473-3-sebastianene@google.com> Subject: [PATCH v8 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, fuad.tabba@linux.dev, 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. Reviewed-by: Vincent Donnefort Signed-off-by: Sebastian Ene --- 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)) -- 2.55.0.487.gaf234c4eb3-goog