From mboxrd@z Thu Jan 1 00:00:00 1970 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 6D53EC79F89 for ; Mon, 7 Sep 2026 07:02:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ZIfmqWHzYLumRU2yPRknO7OjywHDHvBC66gkk+VWF+w=; b=QIZaSfWxTlFOXMlZ2SWkok1qVq ofGhdJ6sfsFfv8/Uq7bkfpwwRbmgc73j1JV6tmQ4I+EMOHGqQs54dWfNnM8XemzNuvT2Ey/M1FpPU yQk1Wqc+YElHc2UlYK1IU26JjgwwVbRoGkHOX7VT5CZ7ppSoOCksv5lx0D2Tw06rJAb8YEPxj+E37 JZpxhe9ce4xA6y1cfeglMj3USyZJhqjq9Is6rmP6i35H1L8yRg1fYBxRGLlJobG/R1AO1KcNm4Pcw QH2bY40zkd9O9h7UZSO1Zn6jk9icigXrCJw6+kFeRsUcg9N6eY7jRlsKoazf17oyqmWgPKMowhhoy yVTGRlBQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x3TMu-000000066tD-1L8E; Mon, 07 Sep 2026 07:02:16 +0000 Received: from out-41.mta1.migadu.com ([2001:41d0:203:375::29] helo=mta1.migadu.com) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x3TMl-000000066nb-3Xz0 for linux-arm-kernel@lists.infradead.org; Mon, 07 Sep 2026 07:02:14 +0000 X-Envelope-To: linux-arm-kernel@lists.infradead.org DKIM-Signature: a=rsa-sha256; bh=4rBBnTKsVt+UNDbaByl3o+wf1nAc8VgqLVJ0fBMEElU=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1788764524; v=1; x=1789369324; b=xnzj2TFmQpMviOUUInBFglPIZm8ksJ9/NnnZWGs5YTj7AsZjbtZMSE4CzDz4pSyt9o6RTsmK 9KyfuDeAta7Z8Copdju+cvySOCcQ6lYQUTVWEZovWNQgqcWXq2U0/5K6LN9FobOVTC5kq2zunSG X6aLg/wkQW2tD4XbvJWt4dK0= X-Envelope-To: linux-arm-kernel@lists.infradead.org Received: by smtp.migadu.com with ESMTPS id ef192164074fc80d; Mon, 07 Sep 2026 07:02:04 +0000 X-Mizu-Trace-ID: ef192164074fc80d X-Migadu-Flow: FLOW_OUT From: Fuad Tabba To: Marc Zyngier , Oliver Upton , kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Catalin Marinas , Will Deacon , Joey Gouly , Steffen Eiden , Suzuki K Poulose , Zenghui Yu , Vincent Donnefort , Quentin Perret , Fuad Tabba Subject: [PATCH v2 16/17] KVM: arm64: Advertise the capabilities that protected VMs support Date: Mon, 7 Sep 2026 08:00:01 +0100 Message-Id: <20260907070002.3333525-17-fuad.tabba@linux.dev> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20260907070002.3333525-1-fuad.tabba@linux.dev> References: <20260907070002.3333525-1-fuad.tabba@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260907_000209_109633_E00F0AA3 X-CRM114-Status: UNSURE ( 7.59 ) 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 kvm_pkvm_ext_allowed() denies every capability it doesn't name, so a protected VM reports 0 for interfaces it implements: KVM_CHECK_EXTENSION denies KVM_CAP_ONE_REG while KVM_{GET,SET}_ONE_REG stage the guest's boot state. Allow the capabilities that work for a protected guest under the restrictions the preceding patches add, the vGIC and the I/O bus being host-managed. Signed-off-by: Fuad Tabba --- arch/arm64/include/asm/kvm_pkvm.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/include/asm/kvm_pkvm.h b/arch/arm64/include/asm/kvm_pkvm.h index 5fec511eca733..ee3ab505b01f7 100644 --- a/arch/arm64/include/asm/kvm_pkvm.h +++ b/arch/arm64/include/asm/kvm_pkvm.h @@ -41,6 +41,15 @@ static inline bool kvm_pkvm_ext_allowed(struct kvm *kvm, long ext) case KVM_CAP_ARM_VM_IPA_SIZE: case KVM_CAP_ARM_PTRAUTH_ADDRESS: case KVM_CAP_ARM_PTRAUTH_GENERIC: + case KVM_CAP_ONE_REG: + case KVM_CAP_MP_STATE: + case KVM_CAP_VCPU_EVENTS: + case KVM_CAP_VCPU_ATTRIBUTES: + case KVM_CAP_IMMEDIATE_EXIT: + case KVM_CAP_IOEVENTFD: + case KVM_CAP_IRQFD_RESAMPLE: + case KVM_CAP_ARM_IRQ_LINE_LAYOUT_2: + case KVM_CAP_ARM_INJECT_SERROR_ESR: return true; case KVM_CAP_ARM_MTE: return false; -- 2.39.5