On Wed, Sep 11, 2024, Sean Christopherson wrote: > Use u64_replace_bits() instead of u64p_replace_bits() to set PMCR.N in > arm64's vPMU counter access test to fudge around what appears to be a gcc > bug. With the recent change to have vcpu_get_reg() return a value in lieu > of an out-param, some versions of gcc completely ignore the operation > performed by set_pmcr_n(), i.e. ignore the output param. Filed a gcc bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116912 I'll report back if anything interesting comes out of that bug.
