From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Shuah Khan <shuah@kernel.org>
Cc: Alan Hayward <alan.hayward@arm.com>,
Luis Machado <luis.machado@arm.com>,
Szabolcs Nagy <szabolcs.nagy@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org, Mark Brown <broonie@kernel.org>
Subject: [PATCH v3 06/21] arm64/sme: Manually encode ZT0 load and store instructions
Date: Fri, 11 Nov 2022 21:50:11 +0000 [thread overview]
Message-ID: <20221111215026.813348-7-broonie@kernel.org> (raw)
In-Reply-To: <20221111215026.813348-1-broonie@kernel.org>
In order to avoid unrealistic toolchain requirements we manually encode the
instructions for loading and storing ZT0.
Signed-off-by: Mark Brown <broonie@kernel.org>
---
arch/arm64/include/asm/fpsimdmacros.h | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h
index 5e0910cf4832..cd03819a3b68 100644
--- a/arch/arm64/include/asm/fpsimdmacros.h
+++ b/arch/arm64/include/asm/fpsimdmacros.h
@@ -220,6 +220,28 @@
| ((\offset) & 7)
.endm
+/*
+ * LDR (ZT0)
+ *
+ * LDR ZT0, nx
+ */
+.macro _ldr_zt nx
+ _check_general_reg \nx
+ .inst 0xe11f8000 \
+ | (\nx << 5)
+.endm
+
+/*
+ * STR (ZT0)
+ *
+ * STR ZT0, nx
+ */
+.macro _str_zt nx
+ _check_general_reg \nx
+ .inst 0xe13f8000 \
+ | (\nx << 5)
+.endm
+
/*
* Zero the entire ZA array
* ZERO ZA
--
2.30.2
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next prev parent reply other threads:[~2022-11-11 21:53 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-11 21:50 [PATCH v3 00/21] arm64/sme: Support SME 2 and SME 2.1 Mark Brown
2022-11-11 21:50 ` [PATCH v3 01/21] arm64/sme: Rename za_state to sme_state Mark Brown
2022-11-11 21:50 ` [PATCH v3 02/21] arm64: Document boot requirements for SME 2 Mark Brown
2022-11-11 21:50 ` [PATCH v3 03/21] arm64/sysreg: Update system registers for SME 2 and 2.1 Mark Brown
2022-11-11 21:50 ` [PATCH v3 04/21] arm64/sme: Document SME 2 and SME 2.1 ABI Mark Brown
2022-11-11 21:50 ` [PATCH v3 05/21] arm64/esr: Document ISS for ZT0 being disabled Mark Brown
2022-11-11 21:50 ` Mark Brown [this message]
2022-12-17 9:40 ` [PATCH v3 06/21] arm64/sme: Manually encode ZT0 load and store instructions Zenghui Yu
2022-12-19 15:04 ` Mark Brown
2022-11-11 21:50 ` [PATCH v3 07/21] arm64/sme: Enable host kernel to access ZT0 Mark Brown
2022-11-11 21:50 ` [PATCH v3 08/21] arm64/sme: Add basic enumeration for SME2 Mark Brown
2022-11-11 21:50 ` [PATCH v3 09/21] arm64/sme: Provide storage for ZT0 Mark Brown
2022-12-17 9:28 ` Zenghui Yu
2022-11-11 21:50 ` [PATCH v3 10/21] arm64/sme: Implement context switching " Mark Brown
2022-11-11 21:50 ` [PATCH v3 11/21] arm64/sme: Implement signal handling for ZT Mark Brown
2022-11-11 21:50 ` [PATCH v3 12/21] arm64/sme: Implement ZT0 ptrace support Mark Brown
2022-12-17 9:23 ` Zenghui Yu
2022-11-11 21:50 ` [PATCH v3 13/21] arm64/sme: Add hwcaps for SME 2 and 2.1 features Mark Brown
2022-12-19 8:22 ` Zenghui Yu
2022-11-11 21:50 ` [PATCH v3 14/21] kselftest/arm64: Add a stress test program for ZT0 Mark Brown
2022-12-17 9:15 ` Zenghui Yu
2022-11-11 21:50 ` [PATCH v3 15/21] kselftest/arm64: Cover ZT in the FP stress test Mark Brown
2022-11-11 21:50 ` [PATCH v3 16/21] kselftest/arm64: Enumerate SME2 in the signal test utility code Mark Brown
2022-11-11 21:50 ` [PATCH v3 17/21] kselftest/arm64: Teach the generic signal context validation about ZT Mark Brown
2022-11-11 21:50 ` [PATCH v3 18/21] kselftest/arm64: Add test coverage for ZT register signal frames Mark Brown
2022-11-11 21:50 ` [PATCH v3 19/21] kselftest/arm64: Add SME2 coverage to syscall-abi Mark Brown
2022-11-11 21:50 ` [PATCH v3 20/21] kselftest/arm64: Add coverage of the ZT ptrace regset Mark Brown
2022-11-11 21:50 ` [PATCH v3 21/21] kselftest/arm64: Add coverage of SME 2 and 2.1 hwcaps Mark Brown
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