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 78AFBC4332F for ; Mon, 13 Nov 2023 17:44:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Jde2eLtrJMeAtPtyWmJmGOwBosVUosI7rz0t7cYPGjM=; b=3wYpEg9XGtCIhL d8yElpjKtxowlteoqzy8WZU7pjfjANHdZ2W7DSeBZnWY0eRk8fgQr0crdPyCgn9B1aj9Uem2FnGME lmDrNHYiBAjIzL2bFHdAmU2x6qQStufNhZksMiVAL5MjjRxzFIkG6aM3pg1odMD4TMJMn9T+4oBuZ hRrEZqOpYykrEjGoUnL7sWGZCGnVAnSYOelERcz/SMXwOUdz81rRF0aXMX+IZyfflbKJu1D7qJqeS e7agbFv2IYZH/6i/wf5e3aV45Mn5YulDLaYyZC9jMIsp4grt8bebjrXayVX9Scu0s5AiBKSWC+zIk 4we4I+pC0d/cHsA/aPYg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r2ayd-00EQAK-1u; Mon, 13 Nov 2023 17:43:59 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r2ayR-00EQ0c-0i for linux-arm-kernel@lists.infradead.org; Mon, 13 Nov 2023 17:43:49 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 937E560FF8; Mon, 13 Nov 2023 17:43:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5E17AC433C8; Mon, 13 Nov 2023 17:43:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1699897425; bh=jIO0CU0paprYgdbaFMB0mZ4jI45fnzC+Q+mtMOUg+5s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TS+DQkdv/ofUKPePTDx9VcJETIqnzMkbXWrJm9t0F73+JrJcWkSAvKFZXjPkjZZJ8 jUCC2wbiMJPYfGA/b2Lc5DKpVy1TzdJtEQmEjp8doIMP3mt2DdKCXIWNDJlhBA8eSY VONJzgp/rG/V9BdozdpT2jX/d30eHdwtKnI7KB+Weq72ftQ8KZLShi8e6QEAXPiFPv zKwIqmNFJepKIjsaJrp4XJMUNCTJJw9NuS4SPPHmQ1phwdFITsJEI5cBaKMXQDDcr8 2ITQ1etj27K8oRbyP5mUlkVfaXrqdhXJbe3KriSFy6xLivGG61qpTpKKV0ncy6PYKg YWFyI6xOvHfVQ== 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 1r2ayN-00CkQ4-CC; Mon, 13 Nov 2023 17:43:43 +0000 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev Cc: Catalin Marinas , Will Deacon , Mark Rutland , James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu Subject: [PATCH 08/12] arm64: Add override for ID_AA64MMFR4_EL1.E2H0 Date: Mon, 13 Nov 2023 17:42:40 +0000 Message-Id: <20231113174244.3026520-9-maz@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231113174244.3026520-1-maz@kernel.org> References: <20231113174244.3026520-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, 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-20231113_094347_340304_A0FBC6DE X-CRM114-Status: GOOD ( 13.01 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Allow ID_AA64MMFR4_EL1.E2H0 to be overriden from the command-line. This will subsequently be of use for non-compliant CPUs. Signed-off-by: Marc Zyngier --- arch/arm64/include/asm/cpufeature.h | 1 + arch/arm64/kernel/cpufeature.c | 4 +++- arch/arm64/kernel/idreg-override.c | 10 ++++++++++ 3 files changed, 14 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index 5f3f62efebd5..d465db251939 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -901,6 +901,7 @@ s64 arm64_ftr_safe_value(const struct arm64_ftr_bits *ftrp, s64 new, s64 cur); struct arm64_ftr_reg *get_arm64_ftr_reg(u32 sys_id); extern struct arm64_ftr_override id_aa64mmfr1_override; +extern struct arm64_ftr_override id_aa64mmfr4_override; extern struct arm64_ftr_override id_aa64pfr0_override; extern struct arm64_ftr_override id_aa64pfr1_override; extern struct arm64_ftr_override id_aa64zfr0_override; diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index a733c9a83f83..bc1880e6a2e6 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -692,6 +692,7 @@ static const struct arm64_ftr_bits ftr_raz[] = { __ARM64_FTR_REG_OVERRIDE(#id, id, table, &no_override) struct arm64_ftr_override __ro_after_init id_aa64mmfr1_override; +struct arm64_ftr_override __ro_after_init id_aa64mmfr4_override; struct arm64_ftr_override __ro_after_init id_aa64pfr0_override; struct arm64_ftr_override __ro_after_init id_aa64pfr1_override; struct arm64_ftr_override __ro_after_init id_aa64zfr0_override; @@ -760,7 +761,8 @@ static const struct __ftr_reg_entry { &id_aa64mmfr1_override), ARM64_FTR_REG(SYS_ID_AA64MMFR2_EL1, ftr_id_aa64mmfr2), ARM64_FTR_REG(SYS_ID_AA64MMFR3_EL1, ftr_id_aa64mmfr3), - ARM64_FTR_REG(SYS_ID_AA64MMFR4_EL1, ftr_id_aa64mmfr4), + ARM64_FTR_REG_OVERRIDE(SYS_ID_AA64MMFR4_EL1, ftr_id_aa64mmfr4, + &id_aa64mmfr4_override), /* Op1 = 1, CRn = 0, CRm = 0 */ ARM64_FTR_REG(SYS_GMID_EL1, ftr_gmid), diff --git a/arch/arm64/kernel/idreg-override.c b/arch/arm64/kernel/idreg-override.c index 3addc09f8746..7b5b9dc20e6b 100644 --- a/arch/arm64/kernel/idreg-override.c +++ b/arch/arm64/kernel/idreg-override.c @@ -55,6 +55,15 @@ static const struct ftr_set_desc mmfr1 __initconst = { }, }; +static const struct ftr_set_desc mmfr4 __initconst = { + .name = "id_aa64mmfr4", + .override = &id_aa64mmfr4_override, + .fields = { + FIELD("e2h0", ID_AA64MMFR4_EL1_E2H0_SHIFT, NULL ), + {} + }, +}; + static bool __init pfr0_sve_filter(u64 val) { /* @@ -161,6 +170,7 @@ static const struct ftr_set_desc sw_features __initconst = { static const struct ftr_set_desc * const regs[] __initconst = { &mmfr1, + &mmfr4, &pfr0, &pfr1, &isar1, -- 2.39.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel