Message ID | 20230912141549.278777-91-ardb@google.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Tue, 12 Sep 2023 07:18:23 -0700 (PDT) Date: Tue, 12 Sep 2023 14:16:18 +0000 In-Reply-To: <20230912141549.278777-63-ardb@google.com> Mime-Version: 1.0 References: <20230912141549.278777-63-ardb@google.com> X-Developer-Key: i=ardb@kernel.org; a=openpgp; fpr=F43D03328115A198C90016883D200E9CA6329909 X-Developer-Signature: v=1; a=openpgp-sha256; l=1646; i=ardb@kernel.org; h=from:subject; bh=mQ9WTXexSe7RDVaszyU1z28xUH4JLiVjQ9a8QrnwVNk=; b=owGbwMvMwCFmkMcZplerG8N4Wi2JIZWhaLP0r1Sl8Og/Wxb49y2aKcp3/+4zkUszq7ecT3E5v nP7CcG6jlIWBjEOBlkxRRaB2X/f7Tw9UarWeZYszBxWJpAhDFycAjCRK6wM/8uafjGae0knuPxl XLrt0+k+nQe3XjyTWH2t3J/55o5Z064y/JVs1Kh0LJ60w+WXwe7bYQ1W3IdUuue05xvt6GQobQw 8ygwA X-Mailer: git-send-email 2.42.0.283.g2d96d420d3-goog Message-ID: <20230912141549.278777-91-ardb@google.com> Subject: [PATCH v4 28/61] arm64: idreg-override: Create a pseudo feature for rodata=off From: Ard Biesheuvel <ardb@google.com> To: linux-arm-kernel@lists.infradead.org Cc: Ard Biesheuvel <ardb@kernel.org>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Ryan Roberts <ryan.roberts@arm.com>, Anshuman Khandual <anshuman.khandual@arm.com>, Kees Cook <keescook@chromium.org>, Joey Gouly <joey.gouly@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230912_071826_627197_69BEB42D X-CRM114-Status: GOOD ( 14.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: <linux-arm-kernel.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> List-Post: <mailto:linux-arm-kernel@lists.infradead.org> List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org |
Series |
arm64: Add support for LPA2 at stage1 and WXN
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expand
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diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index 6c0e2cb710d0..54f3dbeb9e80 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -17,6 +17,7 @@ #define ARM64_SW_FEATURE_OVERRIDE_NOKASLR 0 #define ARM64_SW_FEATURE_OVERRIDE_HVHE 4 +#define ARM64_SW_FEATURE_OVERRIDE_RODATA_OFF 8 #ifndef __ASSEMBLY__ diff --git a/arch/arm64/kernel/pi/idreg-override.c b/arch/arm64/kernel/pi/idreg-override.c index 26961e0f94b7..1aa59c01ab33 100644 --- a/arch/arm64/kernel/pi/idreg-override.c +++ b/arch/arm64/kernel/pi/idreg-override.c @@ -163,6 +163,7 @@ static const struct ftr_set_desc sw_features __prel64_initconst = { .fields = { FIELD("nokaslr", ARM64_SW_FEATURE_OVERRIDE_NOKASLR, NULL), FIELD("hvhe", ARM64_SW_FEATURE_OVERRIDE_HVHE, hvhe_filter), + FIELD("rodataoff", ARM64_SW_FEATURE_OVERRIDE_RODATA_OFF, NULL), {} }, }; @@ -196,6 +197,7 @@ static const struct { { "arm64.nomops", "id_aa64isar2.mops=0" }, { "arm64.nomte", "id_aa64pfr1.mte=0" }, { "nokaslr", "arm64_sw.nokaslr=1" }, + { "rodata=off", "arm64_sw.rodataoff=1" }, }; static int __init parse_hexdigit(const char *p, u64 *v)