From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f69.google.com (mail-ed1-f69.google.com [209.85.208.69]) (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 038164756C9 for ; Fri, 7 Aug 2026 16:43:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786121037; cv=none; b=NdAr6cvAL68Tb6GZPVsmUs3qrNp41ErP1O33Im+uNVGaZeu0wiGGvEWCut0Oj+QDMLkDAXPZgwjYBRApD0XEMKCfQRSi3CI7AOwHHdxsCkb1x1NMuOmoDPx+qwIz+TE2Ayz96kQI3vVH25w8TR6/sBb9OVQOyHaoVd8GLgOMt2o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786121037; c=relaxed/simple; bh=5ifxU6j26G5OaYQO/lDPi7ymHnNqbvnUe/Av1COaOCk=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=TQRE80gIq+h5sptzMtCIkPoVtU1uxnhNnUB4gGqMciKf1EbgGF8VQkO9DxD8YIU7HQh3NVUz8qU1iNyFJQhR7CF0Is638a39Vaa1cExlkqnQLYN0MwrEYqkLMg5pxZX0ak+9MtsuB/cb4cR1yVOK25XdCpdz5Bp36nI2vJcPrJ8= 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=PYTnLVpg; arc=none smtp.client-ip=209.85.208.69 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="PYTnLVpg" Received: by mail-ed1-f69.google.com with SMTP id 4fb4d7f45d1cf-6a17bf3d42eso3261791a12.1 for ; Fri, 07 Aug 2026 09:43:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1786121032; x=1786725832; darn=lists.linux.dev; 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=9zUqneyGoRi5zO+Pb+RiK7Bj3mze6rvm5S1Nt9aVy8g=; b=PYTnLVpgSC8BDycCVaIg3es5TcC5bYkwdTw0MfnPxujrIf+vDOxuL5Cs/xQsD+aRyH dZgAj9/GIlThlvbF6wer6mz0x4DqM7KraBH3duLmK5Rz9dUvPqoT861wgkR4Iq4k/Jw7 gN6QwytaXxk/FQiDfiLXt8H6D8j8dSuAyLPkekKZAgvfHghx7V7aIAo5dsScGgpR5g8m WaS60m9mylj+Qtx/o8w7Oz3mNaFPecWrhyVBOXCCx+FVj3vuEtZREtJVwZLsZc24D50E GmlHXmyU/zHknrPVsCcUJW/aGSsmOgWu3TZ/IHdpJHHGOVyRHFDdbRT6SSctrpaHha9O 24Kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786121032; x=1786725832; 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=9zUqneyGoRi5zO+Pb+RiK7Bj3mze6rvm5S1Nt9aVy8g=; b=jpEdxnezqWTUBJMkf5ytaZbjY3kdHNRb2l/46i3j8cNI1FdAlEB+osBFRX9xog6syU Qh49wD+MmXF/bgjGXd1Z0muCabbjXG8JEQp+WFXePj/lWAP6gizgAZKIcpk2lIP1+E/f ORRB1QtImUevujPbBl/RlKMs9aok3CqyEL0fDa6LpDZsn4dkYB4dMtSVhdGg4hNBzDwv JpPwv6SpAW3tr94lGOrNcu3RQCR/41GDP9WxJBezKONzfDg/gKm8Bzvkh6tn8cFDDNZS RKtY2nIyIbHoi19tKwp+PG6IAKvQklUb1uJ9IiFtKjZouW/9KHQ5+Z4aGxWAduXXlYAt gtNQ== X-Gm-Message-State: AOJu0Yy59vhfr/4KU03KE1AarwRYAkdb4e/w6mCLWNN9i0xhdn3aYCd3 9L+inCvhHZc0JZUsAAXhhby6WgHheoyRTGexT2OpmMrdevtEWR4p0TOFR0oEjVQOl7EXp5+xYC0 nmBb9YqGm+3D46BAkgGoO1GfkoOftlw== X-Received: from edbfj6.prod.google.com ([2002:a05:6402:2b86:b0:697:8356:d9d6]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6402:2394:b0:6a1:7718:ad44 with SMTP id 4fb4d7f45d1cf-6a17718af13mr8635625a12.21.1786121031567; Fri, 07 Aug 2026 09:43:51 -0700 (PDT) Date: Fri, 7 Aug 2026 16:43:19 +0000 In-Reply-To: <20260807164322.2970811-2-sebastianene@google.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260807164322.2970811-2-sebastianene@google.com> X-Mailer: git-send-email 2.55.0.654.g21b8a5bc05-goog Message-ID: <20260807164322.2970811-11-sebastianene@google.com> Subject: [PATCH v2 09/13] KVM: arm64: Trap & emulate the ITS MAPC command From: Sebastian Ene To: catalin.marinas@arm.com, fuad.tabba@linux.dev, joey.gouly@arm.com, mark.rutland@arm.com, maz@kernel.org, oupton@kernel.org, rananta@google.com, Sascha.Bischoff@arm.com, suzuki.poulose@arm.com, will@kernel.org Cc: kvmarm@lists.linux.dev, android-kvm@google.com, bgrzesik@google.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, nathan@kernel.org, perlarsen@google.com, sebastianene@google.com, seiden@linux.ibm.com, smostafa@google.com, tglx@kernel.org, vdonnefort@google.com, vladimir.murzin@arm.com, yuzenghui@huawei.com, zenghui.yu@linux.dev Content-Type: text/plain; charset="UTF-8" Parse the MAPC command and verify if we need to do any updates to the shadow collection table. Signed-off-by: Sebastian Ene --- arch/arm64/kvm/hyp/nvhe/its_emulate.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/kvm/hyp/nvhe/its_emulate.c b/arch/arm64/kvm/hyp/nvhe/its_emulate.c index 071a08d3602d..5629e2a070df 100644 --- a/arch/arm64/kvm/hyp/nvhe/its_emulate.c +++ b/arch/arm64/kvm/hyp/nvhe/its_emulate.c @@ -332,6 +332,13 @@ static int process_its_mapd(struct its_priv_state *its, struct its_cmd_block *cm return track_pfn(its, device_id, itt_pfn, num_pages, remove); } +static int process_its_mapc(struct its_priv_state *its, struct its_cmd_block *cmd, bool rollback) +{ + u32 icid = cmd->raw_cmd[2] & GENMASK(15, 0); + + return check_table_update(its, icid, GITS_BASER_TYPE_COLLECTION, rollback); +} + static int process_cmd(struct its_priv_state *its, struct its_cmd_block *cmd, bool rollback) { @@ -342,6 +349,10 @@ static int process_cmd(struct its_priv_state *its, struct its_cmd_block *cmd, case GITS_CMD_MAPD: ret = process_its_mapd(its, cmd, rollback); break; + + case GITS_CMD_MAPC: + ret = process_its_mapc(its, cmd, rollback); + break; default: /* Passthrough everything for now */ break; -- 2.55.0.654.g21b8a5bc05-goog