From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 241C1606EE9D for ; Mon, 9 Nov 2026 08:33:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=M9nk7+H0; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=S9jMCK95 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-Unsubscribe-Post: List-Owner; bh=bo1WlELU8ik+Rr+Abdwa067G5JksNkxTfxKiETgF/pA=; b=M9nk7+H0KQ5Tsf fY3/XkXcNa+8W3olWX1mZ5TbL1+403rdXEeBU4VLbiGoUwRoXWI76PhVynbMKgUXGAFyjzTi72IKb VvoJzZ1MqaVDT8qOoed/klKRXYuydI/bK7E3ZhCXSrU+qY6j360o5OCwY59mmgvzzajD+kpNfMrJv yqliD70spGcAIK3eGzjZhF5zAnmpcleTU9fpgVWGvL/tKa4vaMjye2YdjZSehDMR7707XVeu0tQNA 93fScOT4yd3g0bf+jASAS7p/6oq8LPLUrt2q29Q6OnkWO8Mx9EsYayuL+wPhYEsBRmZg1SMvp+eU4 hWRZFeQ2CV6/SKfUSNUQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xQKoD-000000004Yw-15so; Mon, 09 Nov 2026 08:32:57 +0000 Received: from out-51.mta0.migadu.com ([2001:41d0:1004:224b::33] helo=mta0.migadu.com) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xQKo4-000000004Nb-0DkQ for linux-arm-kernel@lists.infradead.org; Mon, 09 Nov 2026 08:32:53 +0000 X-Envelope-To: linux-arm-kernel@lists.infradead.org DKIM-Signature: a=rsa-sha256; bh=W7dlvw4NdcdYKD2+I77uCjjseY0CwzVUAyYBCfePwsI=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1794213166; v=1; x=1794817966; b=S9jMCK95QtcoMLf+7bXj5kUxvWLP+RKC3Y6fSEZhcv58cQDtKU+0kt+GkJkWHatYSbGK6KJg IlMykHYdMLqNAxO8qrnGq2hAky39aOsP1i4a8dvo1yfJClM/VQTaVgrJVJY2tDxyGad1qRxefYG LQn5WdLi51Kxu1L9Zo+JDv4k= X-Envelope-To: linux-arm-kernel@lists.infradead.org Received: by smtp.migadu.com with ESMTPS id 909104da5cd6237e; Mon, 09 Nov 2026 08:32:45 +0000 X-Mizu-Trace-ID: 909104da5cd6237e X-Migadu-Flow: FLOW_OUT From: Fuad Tabba To: Marc Zyngier , Oliver Upton , kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: Joey Gouly , Suzuki K Poulose , Zenghui Yu , Steffen Eiden , Catalin Marinas , Will Deacon , Mark Rutland , Vincent Donnefort , Fuad Tabba , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 13/16] KVM: arm64: Advertise AFP and RPRES to protected VMs Date: Mon, 9 Nov 2026 08:32:02 +0000 Message-ID: <20261109083205.806619-14-fuad.tabba@linux.dev> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20261109083205.806619-1-fuad.tabba@linux.dev> References: <20261109083205.806619-1-fuad.tabba@linux.dev> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261109_003248_235858_C0494B2E X-CRM114-Status: UNSURE ( 9.08 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-18.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Advertise FEAT_AFP and FEAT_RPRES to protected VMs. Both are controlled through FPCR, which EL2 switches with the rest of the FP state. Signed-off-by: Fuad Tabba --- arch/arm64/kvm/hyp/nvhe/sys_regs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/kvm/hyp/nvhe/sys_regs.c b/arch/arm64/kvm/hyp/nvhe/sys_regs.c index 73ef47a8e687b..08805c7e4e5a7 100644 --- a/arch/arm64/kvm/hyp/nvhe/sys_regs.c +++ b/arch/arm64/kvm/hyp/nvhe/sys_regs.c @@ -169,6 +169,7 @@ static const struct pvm_ftr_bits pvmid_aa64mmfr1[] = { MAX_FEAT(ID_AA64MMFR1_EL1, PAN, PAN3), MAX_FEAT(ID_AA64MMFR1_EL1, SpecSEI, IMP), MAX_FEAT(ID_AA64MMFR1_EL1, ETS, IMP), + MAX_FEAT(ID_AA64MMFR1_EL1, AFP, IMP), MAX_FEAT(ID_AA64MMFR1_EL1, CMOW, IMP), FEAT_END }; @@ -212,6 +213,7 @@ static const struct pvm_ftr_bits pvmid_aa64isar1[] = { }; static const struct pvm_ftr_bits pvmid_aa64isar2[] = { + MAX_FEAT(ID_AA64ISAR2_EL1, RPRES, IMP), MAX_FEAT_FUNC(ID_AA64ISAR2_EL1, GPA3, IMP, vm_has_ptrauth), MAX_FEAT_FUNC(ID_AA64ISAR2_EL1, APA3, PAuth, vm_has_ptrauth), MAX_FEAT(ID_AA64ISAR2_EL1, MOPS, IMP), -- 2.47.3