From mboxrd@z Thu Jan 1 00:00:00 1970 From: trini@konsulko.com (Tom Rini) Date: Fri, 29 Jun 2018 16:53:16 -0400 Subject: [U-Boot, 3/4] ARM: mach-omap2: omap5/dra7: Enable ACTLR[0] (Enable invalidates of BTB) to facilitate CVE_2017-5715 WA in OS In-Reply-To: <20180612202411.29798-4-nm@ti.com> References: <20180612202411.29798-4-nm@ti.com> Message-ID: <20180629205316.GK18596@bill-the-cat> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Jun 12, 2018 at 03:24:10PM -0500, Nishanth Menon wrote: > Enable CVE_2017_5715 and since we have our own v7_arch_cp15_set_acr > function to setup the bits, we are able to override the settings. > > Without this enabled, Linux kernel reports: > CPU0: Spectre v2: firmware did not set auxiliary control register IBE bit, system vulnerable > > With this enabled, Linux kernel reports: > CPU0: Spectre v2: using ICIALLU workaround > > NOTE: This by itself does not enable the workaround for CPU1 (on > OMAP5 and DRA72/AM572 SoCs) and may require additional kernel patches. > > Signed-off-by: Nishanth Menon Applied to u-boot/master, thanks! -- Tom -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: not available URL: