Messages in this thread | | | From | Christian Eggers <> | Subject | Re: CONFIG_THUMB2_KERNEL=y boot failure after Spectre BHB fixes | Date | Wed, 30 Mar 2022 20:27:56 +0200 |
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On Wednesday, 30 March 2022, 19:42:31 CEST, Ard Biesheuvel wrote: > On Wed, 30 Mar 2022 at 19:33, Christian Eggers <ceggers@arri.de> wrote: > > > > I just switched to v5.15.31-rt38 which already includes > > 6c7cb60bff7a ("ARM: fix Thumb2 regression") > > > > This kernel boots fine now, even with CONFIG_HARDEN_BRANCH_HISTORY=y. After > > applying the patch series from Ard, the system still boots fine. > > > > I haven't any understanding what these patches do. Is there anything I shall > > test? > > > > Thanks for confirming. The first fix affects all Thumb2 > configurations, my patch only affects Thumb2 configurations that > actually enable the loop8 mitigation for Spectre-BHB. > > What type of CPU are you booting on? >
NXP i.MX6ULL (ARM Cortex-A7).
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