From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: linux-arm-kernel@lists.infradead.org
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
stable@vger.kernel.org,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: [PATCH for-stable-v4.19 04/16] arm64: docs: Document SSBS HWCAP
Date: Tue, 8 Oct 2019 17:39:18 +0200 [thread overview]
Message-ID: <20191008153930.15386-5-ard.biesheuvel@linaro.org> (raw)
In-Reply-To: <20191008153930.15386-1-ard.biesheuvel@linaro.org>
From: Will Deacon <will.deacon@arm.com>
[ Upstream commit ee91176120bd584aa10c564e7e9fdcaf397190a1 ]
We advertise the MRS/MSR instructions for toggling SSBS at EL0 using an
HWCAP, so document it along with the others.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
Documentation/arm64/elf_hwcaps.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/arm64/elf_hwcaps.txt b/Documentation/arm64/elf_hwcaps.txt
index d6aff2c5e9e2..6feaffe90e22 100644
--- a/Documentation/arm64/elf_hwcaps.txt
+++ b/Documentation/arm64/elf_hwcaps.txt
@@ -178,3 +178,7 @@ HWCAP_ILRCPC
HWCAP_FLAGM
Functionality implied by ID_AA64ISAR0_EL1.TS == 0b0001.
+
+HWCAP_SSBS
+
+ Functionality implied by ID_AA64PFR1_EL1.SSBS == 0b0010.
--
2.20.1
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next prev parent reply other threads:[~2019-10-08 15:41 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-08 15:39 [PATCH for-stable-v4.19 00/16] arm64 spec mitigation backports Ard Biesheuvel
2019-10-08 15:39 ` [PATCH for-stable-v4.19 01/16] arm64: cpufeature: Detect SSBS and advertise to userspace Ard Biesheuvel
2019-10-08 15:39 ` [PATCH for-stable-v4.19 02/16] arm64: ssbd: Add support for PSTATE.SSBS rather than trapping to EL3 Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: ssbd: Add support for PSTATE.SSBS rather than trapping to EL3" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 03/16] KVM: arm64: Set SCTLR_EL2.DSSBS if SSBD is forcefully disabled and !vhe Ard Biesheuvel
2019-10-09 8:04 ` Patch "KVM: arm64: Set SCTLR_EL2.DSSBS if SSBD is forcefully disabled and !vhe" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` Ard Biesheuvel [this message]
2019-10-09 8:04 ` Patch "arm64: docs: Document SSBS HWCAP" " gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 05/16] arm64: fix SSBS sanitization Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: fix SSBS sanitization" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 06/16] arm64: Add sysfs vulnerability show for spectre-v1 Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: Add sysfs vulnerability show for spectre-v1" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 07/16] arm64: add sysfs vulnerability show for meltdown Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: add sysfs vulnerability show for meltdown" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 08/16] arm64: enable generic CPU vulnerabilites support Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: enable generic CPU vulnerabilites support" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 09/16] arm64: Always enable ssb vulnerability detection Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: Always enable ssb vulnerability detection" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 10/16] arm64: Provide a command line to disable spectre_v2 mitigation Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: Provide a command line to disable spectre_v2 mitigation" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 11/16] arm64: Advertise mitigation of Spectre-v2, or lack thereof Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: Advertise mitigation of Spectre-v2, or lack thereof" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 12/16] arm64: Always enable spectre-v2 vulnerability detection Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: Always enable spectre-v2 vulnerability detection" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 13/16] arm64: add sysfs vulnerability show for spectre-v2 Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: add sysfs vulnerability show for spectre-v2" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 14/16] arm64: add sysfs vulnerability show for speculative store bypass Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: add sysfs vulnerability show for speculative store bypass" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 15/16] arm64: ssbs: Don't treat CPUs with SSBS as unaffected by SSB Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: ssbs: Don't treat CPUs with SSBS as unaffected by SSB" has been added to the 4.19-stable tree gregkh
2019-10-08 15:39 ` [PATCH for-stable-v4.19 16/16] arm64: Force SSBS on context switch Ard Biesheuvel
2019-10-09 8:04 ` Patch "arm64: Force SSBS on context switch" has been added to the 4.19-stable tree gregkh
2019-10-09 8:04 ` [PATCH for-stable-v4.19 00/16] arm64 spec mitigation backports Greg KH
2019-10-09 8:17 ` Ard Biesheuvel
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