From patchwork Fri Jan 27 11:39:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suzuki K Poulose X-Patchwork-Id: 13118595 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B0BD1C54EAA for ; Fri, 27 Jan 2023 12:16:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=6eTiE1SVJE7a8ZcMCQo8u94yv75nhaPkhku3t2BRhJQ=; b=UgfGp0neW6D6jf WlYOAiV8ylNukcBTrPTAbgzdhr8Qr1vjw2znpKFzFzHo2IwrBTcRQ27l66QtEMALy0JsBo0rL5WGm HMBRobUP2Jpv5BxUCW0fXMZN9ry2s0+spLOq7jsX/blrmc+utNIUezDMaidA7MwkrI7Xn2Hc9ENZd 4sQ4Z1osYbh+vDRoa1ZJVyOsdsAfWuzyd/raNU8ozyg4QbJXA04FuMRPuY0XMqqtDzWjS4EYhVtNV zlZ/lH0VfCDqMWcpw0vFBR0xsyXo81H5J2kfU8uM7VcjxtZAWfVMMZHf9iwSArF91qQx9uQ0DP6y4 tGnbfe9XZd9ZMj5vcxzQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pLNdc-00ETBt-Qy; Fri, 27 Jan 2023 12:15:25 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pLN6Q-00EDHz-OB for linux-arm-kernel@lists.infradead.org; Fri, 27 Jan 2023 11:41:08 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D6C8F1684; Fri, 27 Jan 2023 03:41:47 -0800 (PST) Received: from ewhatever.cambridge.arm.com (ewhatever.cambridge.arm.com [10.1.197.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 561883F64C; Fri, 27 Jan 2023 03:41:03 -0800 (PST) From: Suzuki K Poulose To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: suzuki.poulose@arm.com, Alexandru Elisei , Andrew Jones , Christoffer Dall , Fuad Tabba , Jean-Philippe Brucker , Joey Gouly , Marc Zyngier , Mark Rutland , Oliver Upton , Paolo Bonzini , Quentin Perret , Steven Price , Thomas Huth , Will Deacon , Zenghui Yu , linux-coco@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [RFC kvmtool 27/31] virtio: Add arch specific hook for virtio host flags Date: Fri, 27 Jan 2023 11:39:28 +0000 Message-Id: <20230127113932.166089-28-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230127113932.166089-1-suzuki.poulose@arm.com> References: <20230127112248.136810-1-suzuki.poulose@arm.com> <20230127113932.166089-1-suzuki.poulose@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230127_034106_932546_71BDBDEF X-CRM114-Status: UNSURE ( 9.64 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add callbacks for archs to provide virtio host flags. Signed-off-by: Suzuki K Poulose --- arm/aarch32/kvm.c | 5 +++++ arm/aarch64/kvm.c | 5 +++++ include/kvm/kvm.h | 2 ++ mips/kvm.c | 5 +++++ powerpc/kvm.c | 5 +++++ riscv/kvm.c | 5 +++++ virtio/core.c | 5 ++++- x86/kvm.c | 5 +++++ 8 files changed, 36 insertions(+), 1 deletion(-) diff --git a/arm/aarch32/kvm.c b/arm/aarch32/kvm.c index 768a56bb..849c55d3 100644 --- a/arm/aarch32/kvm.c +++ b/arm/aarch32/kvm.c @@ -12,3 +12,8 @@ u64 kvm__arch_default_ram_address(void) { return ARM_MEMORY_AREA; } + +u64 kvm__arch_get_virtio_host_features(struct kvm *kvm) +{ + return 0; +} diff --git a/arm/aarch64/kvm.c b/arm/aarch64/kvm.c index 344c568b..a4664237 100644 --- a/arm/aarch64/kvm.c +++ b/arm/aarch64/kvm.c @@ -234,3 +234,8 @@ void kvm__arch_enable_mte(struct kvm *kvm) pr_debug("MTE capability enabled"); } + +u64 kvm__arch_get_virtio_host_features(struct kvm *kvm) +{ + return 0; +} diff --git a/include/kvm/kvm.h b/include/kvm/kvm.h index 3872dc65..a3624de4 100644 --- a/include/kvm/kvm.h +++ b/include/kvm/kvm.h @@ -203,6 +203,8 @@ int kvm__arch_free_firmware(struct kvm *kvm); bool kvm__arch_cpu_supports_vm(void); void kvm__arch_read_term(struct kvm *kvm); +u64 kvm__arch_get_virtio_host_features(struct kvm *kvm); + #ifdef ARCH_HAS_CFG_RAM_ADDRESS static inline bool kvm__arch_has_cfg_ram_address(void) { diff --git a/mips/kvm.c b/mips/kvm.c index 0faa03a9..e23d5cf9 100644 --- a/mips/kvm.c +++ b/mips/kvm.c @@ -374,3 +374,8 @@ void ioport__map_irq(u8 *irq) void serial8250__inject_sysrq(struct kvm *kvm, char sysrq) { } + +u64 kvm__arch_get_virtio_host_features(struct kvm *kvm) +{ + return 0; +} diff --git a/powerpc/kvm.c b/powerpc/kvm.c index 7b0d0669..6b3ab93f 100644 --- a/powerpc/kvm.c +++ b/powerpc/kvm.c @@ -529,3 +529,8 @@ int kvm__arch_free_firmware(struct kvm *kvm) { return 0; } + +u64 kvm__arch_get_virtio_host_features(struct kvm *kvm) +{ + return 0; +} diff --git a/riscv/kvm.c b/riscv/kvm.c index 4d6f5cb5..884321ca 100644 --- a/riscv/kvm.c +++ b/riscv/kvm.c @@ -182,3 +182,8 @@ int kvm__arch_setup_firmware(struct kvm *kvm) { return 0; } + +u64 kvm__arch_get_virtio_host_features(struct kvm *kvm) +{ + return 0; +} diff --git a/virtio/core.c b/virtio/core.c index 50e7f86d..674f6fae 100644 --- a/virtio/core.c +++ b/virtio/core.c @@ -285,7 +285,10 @@ void virtio_notify_status(struct kvm *kvm, struct virtio_device *vdev, u64 virtio_dev_get_host_features(struct virtio_device *vdev, struct kvm *kvm, void *dev) { - return vdev->ops->get_host_features(kvm, dev); + u64 features = kvm__arch_get_virtio_host_features(kvm); + + features |= vdev->ops->get_host_features(kvm, dev); + return features; } bool virtio_access_config(struct kvm *kvm, struct virtio_device *vdev, diff --git a/x86/kvm.c b/x86/kvm.c index 328fa750..961b5d3f 100644 --- a/x86/kvm.c +++ b/x86/kvm.c @@ -387,3 +387,8 @@ void kvm__arch_read_term(struct kvm *kvm) serial8250__update_consoles(kvm); virtio_console__inject_interrupt(kvm); } + +u64 kvm__arch_get_virtio_host_features(struct kvm *kvm) +{ + return 0; +}