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: 13118473 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B91DC54EAA for ; Fri, 27 Jan 2023 11:42:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233209AbjA0Lmr (ORCPT ); Fri, 27 Jan 2023 06:42:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60168 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233903AbjA0LmA (ORCPT ); Fri, 27 Jan 2023 06:42:00 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 8AEF372659; Fri, 27 Jan 2023 03:41:28 -0800 (PST) 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 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.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; +}