Messages in this thread | | | Subject | Re: [PATCH 4/6] s390: add system call to run tasks with modified branch prediction | From | Paolo Bonzini <> | Date | Wed, 17 Jan 2018 11:05:30 +0100 |
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On 17/01/2018 11:03, Florian Weimer wrote: > On 01/17/2018 10:48 AM, Martin Schwidefsky wrote: >> rc = syscall(__NR_s390_modify_bp); >> if (rc) { >> perror("s390_modify_bp"); >> exit(EXIT_FAILURE); >> } > > Isn't this traditionally done through personality or prctl? > > This looks like something other architectures may want as well.
Yes, Intel would want to have a prctl or similar to enable STIBP (single-thread indirect branch predictor).
Paolo
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