The thread I was thinking of is: http://lists.infradead.org/pipermail/linux-arm-kernel/2018-March/562953.html which is about b092201e0020614127f495c092e0a12d26a2116e `arm64: Add ARM_SMCCC_ARCH_WORKAROUND_1 BP hardening support`. As you mention, that commit uses the correct widths. Andrey had sent me his workaround, which modified some #defines in include/linux/arm-smccc.h, which were added recently in commit f2d3b2e8759a5833df6f022e42df2d581e6d843c `arm/arm64: smccc: Implement SMCCC v1.1 inline primitive`. >>> We probably want to be very explicit with register widths here. So f2d3b2e8759 is the patch I'm referring to. On Fri, Mar 16, 2018 at 10:18 AM Marc Zyngier <marc.zyngier@xxxxxxx> wrote: > On 16/03/18 16:52, Nick Desaulniers wrote: > [dropping kernel-dynamic-tools@xxxxxxxxxx which keeps bouncing] > > Is this in regards to: commit "arm64: Add ARM_SMCCC_ARCH_WORKAROUND_1 BP > > hardening support"? Has anyone tried to upstream a fix for this? We > > probably want to be very explicit with register widths here. > What do you mean? The current code is as strict as it gets, and > explicitly tells the compiler to use the right register width, based on > the SMC call parameter types. > Thanks, > M. > -- > Jazz is not dead. It just smells funny... -- Thanks, ~Nick Desaulniers _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
