From: Nishanth Menon <nm@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 4/4] ARM: mach-omap2: omap3/am335x: Enable ACR::IBE on Cortex-A8 SoCs for CVE-2017-5715
Date: Tue, 12 Jun 2018 15:24:11 -0500 [thread overview]
Message-ID: <20180612202411.29798-5-nm@ti.com> (raw)
In-Reply-To: <20180612202411.29798-1-nm@ti.com>
Enable CVE-2017-5715 option to set the IBE bit. This enables kernel
workarounds necessary for the said CVE.
With this enabled, Linux reports:
CPU0: Spectre v2: using BPIALL workaround
This workaround may need to be re-applied in OS environment around low
power transition resume states where context of ACR would be lost (off-mode
etc).
Signed-off-by: Nishanth Menon <nm@ti.com>
---
arch/arm/mach-omap2/Kconfig | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 77820cc8d1e4..f4babc8d2600 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -10,6 +10,7 @@ config OMAP34XX
select ARM_ERRATA_454179
select ARM_ERRATA_621766
select ARM_ERRATA_725233
+ select ARM_CORTEX_A8_CVE_2017_5715
select USE_TINY_PRINTF
imply NAND_OMAP_GPMC
imply SPL_EXT_SUPPORT
@@ -116,6 +117,7 @@ config AM43XX
config AM33XX
bool "AM33XX SoC"
select SPECIFY_CONSOLE_INDEX
+ select ARM_CORTEX_A8_CVE_2017_5715
imply NAND_OMAP_ELM
imply NAND_OMAP_GPMC
imply SPL_NAND_AM33XX_BCH
--
2.15.1
next prev parent reply other threads:[~2018-06-12 20:24 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-12 20:24 [U-Boot] [PATCH 0/4] ARM: Provide workaround setup bits for CVE-2017-5715 (A8/A15) Nishanth Menon
2018-06-12 20:24 ` [U-Boot] [PATCH 1/4] ARM: Introduce ability to enable ACR::IBE on Cortex-A8 for CVE-2017-5715 Nishanth Menon
2018-06-20 14:13 ` Fabio Estevam
2018-06-29 20:53 ` [U-Boot] [U-Boot, " Tom Rini
2018-06-12 20:24 ` [U-Boot] [PATCH 2/4] ARM: Introduce ability to enable invalidate of BTB with ICIALLU on Cortex-A15 " Nishanth Menon
2018-06-12 23:05 ` Marek Vasut
2018-06-13 13:32 ` Nishanth Menon
2018-06-13 15:46 ` Tom Rini
2018-06-13 21:32 ` Nishanth Menon
2018-06-13 23:06 ` Marek Vasut
2018-06-13 0:30 ` Florian Fainelli
2018-06-13 13:37 ` Nishanth Menon
2018-06-13 21:36 ` Florian Fainelli
2018-06-14 12:46 ` Nishanth Menon
2018-06-20 14:14 ` Fabio Estevam
2018-06-29 20:53 ` [U-Boot] [U-Boot, " Tom Rini
2018-06-12 20:24 ` [U-Boot] [PATCH 3/4] ARM: mach-omap2: omap5/dra7: Enable ACTLR[0] (Enable invalidates of BTB) to facilitate CVE_2017-5715 WA in OS Nishanth Menon
2018-06-12 23:06 ` Marek Vasut
2018-06-13 13:40 ` Nishanth Menon
2018-06-13 17:36 ` Russell King - ARM Linux
2018-06-13 20:36 ` Marek Vasut
2018-06-13 21:31 ` Nishanth Menon
2018-06-13 21:47 ` Russell King - ARM Linux
2018-06-29 20:53 ` [U-Boot] [U-Boot, " Tom Rini
2018-06-12 20:24 ` Nishanth Menon [this message]
2018-06-29 20:53 ` [U-Boot] [U-Boot, 4/4] ARM: mach-omap2: omap3/am335x: Enable ACR::IBE on Cortex-A8 SoCs for CVE-2017-5715 Tom Rini
2018-06-12 23:06 ` [U-Boot] [PATCH 0/4] ARM: Provide workaround setup bits for CVE-2017-5715 (A8/A15) Marek Vasut
2018-06-18 18:48 ` Tom Rini
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