From patchwork Thu Aug 15 12:59:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 13764769 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 9F62BC3DA7F for ; Thu, 15 Aug 2024 13:01:32 +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=5W3+TzXDqo8oRvJQn1NQecPn3p6ywR0+m0QFT0U/tw0=; b=gdqtL/irv5K7U579Mxd4FaHh8x OFFSOBq3WCmoMeQ80UBadIztUP215nsmRy8X6IAwRhvgqNfwqqpTFI8+ZvhWw9cuaYoDCvZfQRuxt CGGPcKWGreYP7vzKQwa4Bx+mthCd0B6EoOamMvJncJtJBVAzaxmplMETcy9qQjk3202JxBHwdP7lD y2nn6L/lfppxsA/V0FS9wRZklf9mWPDxZK2rZhZQWa9U39tHMiRoCQcNv7kCUCUzvPrhebBLvA6j6 xEPTBi5WQhcVew5AQFyQWCrt1/W+Nzpy7py6cLunP2BUGta/Jbr9htuf1nwj63ocH9Cj2rH0YSuoE gr+Yn5MA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sea6O-00000009y8a-0ktm; Thu, 15 Aug 2024 13:01:16 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sea5F-00000009xhL-3Pbg for linux-arm-kernel@lists.infradead.org; Thu, 15 Aug 2024 13:00:07 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 2EABD61E61; Thu, 15 Aug 2024 13:00:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D64D5C4AF0B; Thu, 15 Aug 2024 13:00:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1723726804; bh=HG45eYtHH12sqQC97/SWs8xCRMEbpDiQ1tJj7NKCsls=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UFUShYj9z2wvrBjmP4YZ62S/jHHk2FTvroICQn7SOrrbH0glXh6fxDOvhDMhMHZSc teefCeKMIqiySnOXp4NIME0Jv4WQxMLwAEHZXrPFDOiIJSkVc8Jag6PeG3bp71cUXR 1+QPg/DxgYEFj5QzjsSVEvSsPnz3ll1BXKK1ZWdQ+2oHphwPlA5hou3fX11bfsrB3u vUE1y+mKEGj8jwakbcpWkJwg8N6nQANiAoLsNAc+WVt9ogERLsVtfSaAcm1ylCLRJb TYpx4+KrdEXFZeLmqDPKDnJimvUHJiG/4TJilowO7eFH5uzri1ufBMGU2pH73i7w3t 1jwFvIlB9lMOw== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1sea5C-003xld-Rg; Thu, 15 Aug 2024 14:00:02 +0100 From: Marc Zyngier To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org Cc: James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu Subject: [PATCH 01/11] arm64: Expose ID_AA64ISAR1_EL1.XS to sanitised feature consumers Date: Thu, 15 Aug 2024 13:59:49 +0100 Message-Id: <20240815125959.2097734-2-maz@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240815125959.2097734-1-maz@kernel.org> References: <20240815125959.2097734-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240815_060005_919232_66D349D0 X-CRM114-Status: GOOD ( 10.28 ) 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 Despite KVM now being able to deal with XS-tagged TLBIs, we still don't expose these feature bits to KVM. Plumb in the feature in ID_AA64ISAR1_EL1. Fixes: 0feec7769a63 ("KVM: arm64: nv: Add handling of NXS-flavoured TLBI operations") Signed-off-by: Marc Zyngier --- arch/arm64/kernel/cpufeature.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 646ecd3069fd..4901daace5a3 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -228,6 +228,7 @@ static const struct arm64_ftr_bits ftr_id_aa64isar0[] = { }; static const struct arm64_ftr_bits ftr_id_aa64isar1[] = { + ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR1_EL1_XS_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR1_EL1_I8MM_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR1_EL1_DGH_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR1_EL1_BF16_SHIFT, 4, 0),