[PATCH v4] RISC-V: Show accurate per-hart isa in /proc/cpuinfo

[Palmer Dabbelt]

On Tue, 11 Jul 2023 13:18:30 -0700, Evan Green wrote:
> In /proc/cpuinfo, most of the information we show for each processor is
> specific to that hart: marchid, mvendorid, mimpid, processor, hart,
> compatible, and the mmu size. But the ISA string gets filtered through a
> lowest common denominator mask, so that if one CPU is missing an ISA
> extension, no CPUs will show it.
> 
> Now that we track the ISA extensions for each hart, let's report ISA
> extension info accurately per-hart in /proc/cpuinfo. We cannot change
> the "isa:" line, as usermode may be relying on that line to show only
> the common set of extensions supported across all harts. Add a new "hart
> isa" line instead, which reports the true set of extensions for that
> hart. This matches what is returned in riscv_hwprobe() when querying a
> given hart.
> 
> [...]

Applied, thanks!

[1/1] RISC-V: Show accurate per-hart isa in /proc/cpuinfo
      https://git.kernel.org/palmer/c/3d44f547b677

Best regards,
-- 
Palmer Dabbelt <palmer at rivosinc.com>