From patchwork Thu Aug 22 15:10:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joey Gouly X-Patchwork-Id: 13773847 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 8B4CFC52D7C for ; Thu, 22 Aug 2024 15:52:28 +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=rtB0cFu4yhRz/z4tCR4fwR+sWZaGlGCX641JW7j6vJM=; b=1T0ARnzhOs5nCfgXbtinbq+XIQ bZPQNs0Mb0/FJodfJaXBsPEZoGTgkAhCAAJTsyADYm3geLVA7medjaip9T8wOlFfZfud9+35flJjw NACgjnbGq0nSEVckGwhSoMszbD5jW5FX/dFeoXkZLRfqhQ5IpCAc6HK4kFN+kYcj95YBC+vtd1VGw tzeTVLoE3HSFWthUfqOc2p6/CXsW2mdsDh4wzWn8Fw5ZA7XQEaWGoV7FuQe3Jym85nNyG0WeX/Nc0 C2zQzemt5iNOBeQGmGBQHlTntthyxFxmR6OkiElxMLd5AujguBmdPU++5CvXU9A80RAT6fGSpM/bf cpfy4IAA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1shA6d-0000000DPKU-0gUy; Thu, 22 Aug 2024 15:52:11 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sh9UD-0000000DIOB-0EIZ for linux-arm-kernel@bombadil.infradead.org; Thu, 22 Aug 2024 15:12:29 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=rtB0cFu4yhRz/z4tCR4fwR+sWZaGlGCX641JW7j6vJM=; b=XtuvPnZ3bfYdq/W9X2z2s45bVT 4jHBdIJAIv//bD5IYCkyArL1ZB9Lp6S9j6RUyDTdULhf+LCeLJWurK60w5NLked17FGsSaslsJhlB 9PzG2Xrnx7dgWoYFOAPuqCPNeg0rIrGxY6WjFPWpgQ9or/SHqKda0fLYEDbxEBz1dh8bR1BRWJTVN R93T95ykO9QRqwTAcAnlEuozvJoFFVQviTdPFmxcnSdA1MWE/WyUp+OXAlVTwczW4db8NXs93q/pr l9NSFvDbN6NoxMlNOvF9whcReuKjmuiuBWZuT8EAypnjg4077aWE6ZWaHXXEoWyXmEcs+b3t4ps2U s5EVvs1g==; Received: from foss.arm.com ([217.140.110.172]) by desiato.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sh9U9-00000009yBa-3dLB for linux-arm-kernel@lists.infradead.org; Thu, 22 Aug 2024 15:12:27 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D16131655; Thu, 22 Aug 2024 08:12:50 -0700 (PDT) Received: from e124191.cambridge.arm.com (e124191.cambridge.arm.com [10.1.197.45]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B2D423F58B; Thu, 22 Aug 2024 08:12:20 -0700 (PDT) From: Joey Gouly To: linux-arm-kernel@lists.infradead.org Cc: nd@arm.com, akpm@linux-foundation.org, aneesh.kumar@kernel.org, aneesh.kumar@linux.ibm.com, anshuman.khandual@arm.com, bp@alien8.de, broonie@kernel.org, catalin.marinas@arm.com, christophe.leroy@csgroup.eu, dave.hansen@linux.intel.com, hpa@zytor.com, joey.gouly@arm.com, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, maz@kernel.org, mingo@redhat.com, mpe@ellerman.id.au, naveen.n.rao@linux.ibm.com, npiggin@gmail.com, oliver.upton@linux.dev, shuah@kernel.org, skhan@linuxfoundation.org, szabolcs.nagy@arm.com, tglx@linutronix.de, will@kernel.org, x86@kernel.org, kvmarm@lists.linux.dev, linux-kselftest@vger.kernel.org Subject: [PATCH v5 14/30] arm64: convert protection key into vm_flags and pgprot values Date: Thu, 22 Aug 2024 16:10:57 +0100 Message-Id: <20240822151113.1479789-15-joey.gouly@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240822151113.1479789-1-joey.gouly@arm.com> References: <20240822151113.1479789-1-joey.gouly@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240822_161226_156163_FFB8DC95 X-CRM114-Status: GOOD ( 12.26 ) 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 Modify arch_calc_vm_prot_bits() and vm_get_page_prot() such that the pkey value is set in the vm_flags and then into the pgprot value. Signed-off-by: Joey Gouly Cc: Catalin Marinas Cc: Will Deacon --- arch/arm64/include/asm/mman.h | 10 +++++++++- arch/arm64/mm/mmap.c | 11 +++++++++++ 2 files changed, 20 insertions(+), 1 deletion(-) diff --git arch/arm64/include/asm/mman.h arch/arm64/include/asm/mman.h index 5966ee4a6154..52791715f6e6 100644 --- arch/arm64/include/asm/mman.h +++ arch/arm64/include/asm/mman.h @@ -7,7 +7,7 @@ #include static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot, - unsigned long pkey __always_unused) + unsigned long pkey) { unsigned long ret = 0; @@ -17,6 +17,14 @@ static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot, if (system_supports_mte() && (prot & PROT_MTE)) ret |= VM_MTE; +#ifdef CONFIG_ARCH_HAS_PKEYS + if (system_supports_poe()) { + ret |= pkey & BIT(0) ? VM_PKEY_BIT0 : 0; + ret |= pkey & BIT(1) ? VM_PKEY_BIT1 : 0; + ret |= pkey & BIT(2) ? VM_PKEY_BIT2 : 0; + } +#endif + return ret; } #define arch_calc_vm_prot_bits(prot, pkey) arch_calc_vm_prot_bits(prot, pkey) diff --git arch/arm64/mm/mmap.c arch/arm64/mm/mmap.c index 642bdf908b22..7e3ad97e27d8 100644 --- arch/arm64/mm/mmap.c +++ arch/arm64/mm/mmap.c @@ -102,6 +102,17 @@ pgprot_t vm_get_page_prot(unsigned long vm_flags) if (vm_flags & VM_MTE) prot |= PTE_ATTRINDX(MT_NORMAL_TAGGED); +#ifdef CONFIG_ARCH_HAS_PKEYS + if (system_supports_poe()) { + if (vm_flags & VM_PKEY_BIT0) + prot |= PTE_PO_IDX_0; + if (vm_flags & VM_PKEY_BIT1) + prot |= PTE_PO_IDX_1; + if (vm_flags & VM_PKEY_BIT2) + prot |= PTE_PO_IDX_2; + } +#endif + return __pgprot(prot); } EXPORT_SYMBOL(vm_get_page_prot);