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 486EC606A31E for ; Sun, 25 Oct 2026 07:52:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=JVFjbsok; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=n/kLLYr8 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=ZBJQD9CEX8BSoBmqxIKznqV9jSK1F+2qL8QO29Cd7to=; b=JVFjbsokTvOKM1 fXwrXQCX4I707UgSoqE0qKllmrZ2gqBSwDUUw2GtcmmW19YakYoRIo4Lnj/7GRSmVmYk/3yasThYY KW+nVMCzhr7VkgxqDcqTjgIZ1HIGNQaq9kzWPtcvZ1nkltyHea7McwTVdaAFvZOxkA8ZeeXXBun5j bu5hpRmH9IENBcTjBnIxfP671NIzfkOM83xzkkhfAqlOOnESC0i+bf4Xpq1Wt5mzAYQsTGxaf4IOM HCQcxBmYbaj18KCBZLuiy6xuPHJJ9AV8etlmXqHjmo/jvoLeBL8EwY/iosgEBX3HbaS11HFV62g7P hW7IdDNp4xjHSTJyh20Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xKt1P-00000000qv0-0RHQ; Sun, 25 Oct 2026 07:52:03 +0000 Received: from out-63.mta0.migadu.com ([2001:41d0:1004:224b::3f] helo=mta0.migadu.com) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xKt1H-00000000qsA-2JEm for linux-arm-kernel@lists.infradead.org; Sun, 25 Oct 2026 07:51:56 +0000 X-Envelope-To: linux-arm-kernel@lists.infradead.org DKIM-Signature: a=rsa-sha256; bh=4/HL2d4Nrhce67FzGis9vXGrK25cQYCUC9c0XAxPHEk=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1792914713; v=1; x=1793519513; b=n/kLLYr8dscJbvlScpg92+xPBfNLNwxn35iqvYOUP/RSRSYfC1M+Aa649LCqbY1/ND4BdHbM wrhM3EvT/dAMsjaHqhxhD7ii2xHbi5fib28O2wpkQUvNFuBJPeJWFoVpMjMsI89WzpH9WKOpafZ r3Tdzh08BXpsgpTcaStnMY+c= X-Envelope-To: linux-arm-kernel@lists.infradead.org Received: by smtp.migadu.com with ESMTPS id 0235f86465034b12; Sun, 25 Oct 2026 07:51:53 +0000 X-Mizu-Trace-ID: 0235f86465034b12 X-Migadu-Flow: FLOW_OUT From: Fuad Tabba To: Marc Zyngier , Oliver Upton , kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: Catalin Marinas , Will Deacon , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Steffen Eiden , Mark Rutland , Yicong Yang , Zhou Wang , Arnd Bergmann , Fuad Tabba , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/5] KVM: arm64: Add ACCDATA_EL1 to the sysreg array Date: Sun, 25 Oct 2026 07:51:35 +0000 Message-ID: <20261025075138.2919734-3-fuad.tabba@linux.dev> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20261025075138.2919734-1-fuad.tabba@linux.dev> References: <20261025075138.2919734-1-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-20261025_005155_730687_4D83913E X-CRM114-Status: GOOD ( 14.09 ) 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=-19.2 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 From: Marc Zyngier Make ACCDATA_EL1 a first-class citizen, and add it to the sysreg array. Visibility is conditioned on the feature being enabled. Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20240815125959.2097734-4-maz@kernel.org [Fuad: rebased] Cc: stable@vger.kernel.org Signed-off-by: Fuad Tabba --- arch/arm64/include/asm/kvm_host.h | 3 +++ arch/arm64/kvm/sys_regs.c | 12 +++++++++++- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 27fe0cd5b2d7a..5b1cd1f502b7d 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -498,6 +498,9 @@ enum vcpu_sysreg { GCR_EL1, /* Tag Control Register */ TFSRE0_EL1, /* Tag Fault Status Register (EL0) */ + /* Random stuff */ + ACCDATA_EL1, /* Accelerator Data */ + POR_EL0, /* Permission Overlay Register 0 (EL0) */ /* FP/SIMD/SVE */ diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 44aae52c473d7..40f8be41da3a4 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2914,6 +2914,15 @@ static unsigned int sve_el2_visibility(const struct kvm_vcpu *vcpu, return __el2_visibility(vcpu, rd, sve_visibility); } +static unsigned int accdata_visibility(const struct kvm_vcpu *vcpu, + const struct sys_reg_desc *rd) +{ + if (kvm_has_feat(vcpu->kvm, ID_AA64ISAR1_EL1, LS64, LS64_ACCDATA)) + return 0; + + return REG_HIDDEN; +} + static unsigned int vncr_el2_visibility(const struct kvm_vcpu *vcpu, const struct sys_reg_desc *rd) { @@ -3601,7 +3610,8 @@ static const struct sys_reg_desc sys_reg_descs[] = { { SYS_DESC(SYS_CONTEXTIDR_EL1), access_vm_reg, reset_val, CONTEXTIDR_EL1, 0 }, { SYS_DESC(SYS_TPIDR_EL1), NULL, reset_unknown, TPIDR_EL1 }, - { SYS_DESC(SYS_ACCDATA_EL1), undef_access }, + { SYS_DESC(SYS_ACCDATA_EL1), undef_access, reset_val, ACCDATA_EL1, 0, + .visibility = accdata_visibility}, { SYS_DESC(SYS_SCXTNUM_EL1), undef_access }, -- 2.47.3