Messages in this thread | | | Subject | Re: [PATCH v4] RISC-V: Show accurate per-hart isa in /proc/cpuinfo | Date | Wed, 30 Aug 2023 06:24:39 -0700 | From | Palmer Dabbelt <> |
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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@rivosinc.com>
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