Messages in this thread | | | From | Evan Green <> | Date | Fri, 7 Apr 2023 16:13:23 -0700 | Subject | Re: [PATCH v5 2/6] RISC-V: Add a syscall for HW probing |
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On Wed, Apr 5, 2023 at 6:57 AM Paul Walmsley <paul@pwsan.com> wrote: > > On Mon, 27 Mar 2023, Evan Green wrote: > > > We don't have enough space for these all in ELF_HWCAP{,2} and there's no > > system call that quite does this, so let's just provide an arch-specific > > one to probe for hardware capabilities. This currently just provides > > m{arch,imp,vendor}id, but with the key-value pairs we can pass more in > > the future. > > > > Co-developed-by: Palmer Dabbelt <palmer@rivosinc.com> > > Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> > > Signed-off-by: Evan Green <evan@rivosinc.com> > > Reviewed-by: Conor Dooley <conor.dooley@microchip.com> > > Reviewed-by: Heiko Stuebner <heiko.stuebner@vrull.eu> > > Tested-by: Heiko Stuebner <heiko.stuebner@vrull.eu> > > Folks are already building RISC-V systems with cores that have different > feature sets inside the same Linux system image - just like some ARM > vendors are - so it makes sense to pass this information onto userspace. > > By the way, Evan, did you intend to update the copyright dates to include > 2023?
Updated in v6.
> > Beyond that, > > Reviewed-by: Paul Walmsley <paul.walmsley@sifive.com>
Thanks, Paul! -Evan
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