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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Marc Zyngier <marc.zyngier@arm.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Catalin Marinas <catalin.marinas@arm.com>,
	James Morse <james.morse@arm.com>
Subject: [PATCH 4.9 17/43] arm64: arch_timer: avoid unused function warning
Date: Wed,  6 Apr 2022 20:26:26 +0200	[thread overview]
Message-ID: <20220406182437.184811467@linuxfoundation.org> (raw)
In-Reply-To: <20220406182436.675069715@linuxfoundation.org>

From: Arnd Bergmann <arnd@arndb.de>

commit 040f340134751d73bd03ee92fabb992946c55b3d upstream.

arm64_1188873_read_cntvct_el0() is protected by the correct
CONFIG_ARM64_ERRATUM_1188873 #ifdef, but the only reference to it is
also inside of an CONFIG_ARM_ARCH_TIMER_OOL_WORKAROUND section,
and causes a warning if that is disabled:

drivers/clocksource/arm_arch_timer.c:323:20: error: 'arm64_1188873_read_cntvct_el0' defined but not used [-Werror=unused-function]

Since the erratum requires that we always apply the workaround
in the timer driver, select that symbol as we do for SoC
specific errata.

Fixes: 95b861a4a6d9 ("arm64: arch_timer: Add workaround for ARM erratum 1188873")
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -444,6 +444,7 @@ config ARM64_ERRATUM_1024718
 config ARM64_ERRATUM_1188873
 	bool "Cortex-A76: MRC read following MRRC read of specific Generic Timer in AArch32 might give incorrect result"
 	default y
+	select ARM_ARCH_TIMER_OOL_WORKAROUND
 	help
 	  This option adds work arounds for ARM Cortex-A76 erratum 1188873
 



  parent reply	other threads:[~2022-04-06 19:48 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-06 18:26 [PATCH 4.9 00/43] 4.9.310-rc1 review Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 01/43] arm64: errata: Provide macro for major and minor cpu revisions Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 02/43] arm64: Remove useless UAO IPI and describe how this gets enabled Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 03/43] arm64: Add MIDR encoding for Arm Cortex-A55 and Cortex-A35 Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 04/43] arm64: capabilities: Update prototype for enable call back Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 05/43] arm64: capabilities: Move errata work around check on boot CPU Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 06/43] arm64: capabilities: Move errata processing code Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 07/43] arm64: capabilities: Prepare for fine grained capabilities Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 08/43] arm64: capabilities: Add flags to handle the conflicts on late CPU Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 09/43] arm64: capabilities: Clean up midr range helpers Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 10/43] arm64: Add helpers for checking CPU MIDR against a range Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 11/43] arm64: capabilities: Add support for checks based on a list of MIDRs Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 12/43] clocksource/drivers/arm_arch_timer: Remove fsl-a008585 parameter Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 13/43] clocksource/drivers/arm_arch_timer: Introduce generic errata handling infrastructure Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 14/43] arm64: arch_timer: Add infrastructure for multiple erratum detection methods Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 15/43] arm64: arch_timer: Add erratum handler for CPU-specific capability Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 16/43] arm64: arch_timer: Add workaround for ARM erratum 1188873 Greg Kroah-Hartman
2022-04-06 18:26 ` Greg Kroah-Hartman [this message]
2022-04-06 18:26 ` [PATCH 4.9 18/43] arm64: Add silicon-errata.txt entry " Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 19/43] arm64: Make ARM64_ERRATUM_1188873 depend on COMPAT Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 20/43] arm64: Add part number for Neoverse N1 Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 21/43] arm64: Add part number for Arm Cortex-A77 Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 22/43] arm64: Add Neoverse-N2, Cortex-A710 CPU part definition Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 23/43] arm64: Add Cortex-X2 " Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 24/43] arm64: Add helper to decode register from instruction Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 25/43] arm64: entry.S: Add ventry overflow sanity checks Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 26/43] arm64: entry: Make the trampoline cleanup optional Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 27/43] arm64: entry: Free up another register on kptis tramp_exit path Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 28/43] arm64: entry: Move the trampoline data page before the text page Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 29/43] arm64: entry: Allow tramp_alias to access symbols after the 4K boundary Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 30/43] arm64: entry: Dont assume tramp_vectors is the start of the vectors Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 31/43] arm64: entry: Move trampoline macros out of ifdefd section Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 32/43] arm64: entry: Make the kpti trampolines kpti sequence optional Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 33/43] arm64: entry: Allow the trampoline text to occupy multiple pages Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 34/43] arm64: entry: Add non-kpti __bp_harden_el1_vectors for mitigations Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 35/43] arm64: Move arm64_update_smccc_conduit() out of SSBD ifdef Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 36/43] arm64: entry: Add vectors that have the bhb mitigation sequences Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 37/43] arm64: entry: Add macro for reading symbol addresses from the trampoline Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 38/43] arm64: Add percpu vectors for EL1 Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 39/43] KVM: arm64: Add templates for BHB mitigation sequences Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 40/43] arm64: Mitigate spectre style branch history side channels Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 41/43] KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 42/43] arm64: add ID_AA64ISAR2_EL1 sys register Greg Kroah-Hartman
2022-04-06 18:26 ` [PATCH 4.9 43/43] arm64: Use the clearbhb instruction in mitigations Greg Kroah-Hartman
2022-04-06 20:57 ` [PATCH 4.9 00/43] 4.9.310-rc1 review Florian Fainelli
2022-04-06 21:55 ` Pavel Machek
2022-04-06 22:51 ` Shuah Khan
2022-04-07  9:32 ` Guenter Roeck
2022-04-07 10:23   ` Greg Kroah-Hartman
2022-04-07 17:20     ` James Morse
2022-04-12  5:51       ` Greg Kroah-Hartman
2022-04-07 11:20 ` Naresh Kamboju
2022-04-07 11:28 ` Naresh Kamboju

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