On Tue, 10 Mar 2026 21:35:24 +0800 dangshiwei <[email protected]> wrote:
> RISC-V currently has no-op implementations of the rte_prefetch* > functions. Use __builtin_prefetch() to allow the compiler to emit > Zicbop prefetch instructions when the target supports them (GCC > 13.1+, Clang 17.0.1+ with -march=rv*_zicbop). > > The Zicbop extension has no cache-level hints, so rte_prefetch1() > and rte_prefetch2() fall back to rte_prefetch0(). The volatile > qualifier is stripped via uintptr_t cast to satisfy > __builtin_prefetch()'s const void * parameter without triggering > -Wdiscarded-qualifiers. > > This replaces the abandoned v1 series by Daniel Gregory > (Message-ID: [email protected]) > addressing reviewer feedback from Kardach and Hemminger. > > Signed-off-by: dangshiwei <[email protected]> > --- There is another patch for x86 that does same thing. https://patchwork.dpdk.org/project/dpdk/patch/[email protected]/ Would be good to have single common file for all arch.
