Re: [PATCH v3 1/2] powerpc: add ISA v3.0 / v3.1 wait opcode macro

[PATCH v3 1/2] powerpc: add ISA v3.0 / v3.1 wait opcode macro · Nicholas Piggin <npiggin@gmail.com> · 2022-07-20
[PATCH v3 2/2] powerpc/64s: Make POWER10 and later use pause_short in cpu_relax loops · Nicholas Piggin <npiggin@gmail.com> · 2022-07-20
Re: [PATCH v3 2/2] powerpc/64s: Make POWER10 and later use pause_short in cpu_relax loops · Segher Boessenkool <hidden> · 2022-07-20
Re: [PATCH v3 2/2] powerpc/64s: Make POWER10 and later use pause_short in cpu_relax loops · Michael Ellerman <mpe@ellerman.id.au> · 2022-07-26
Re: [PATCH v3 1/2] powerpc: add ISA v3.0 / v3.1 wait opcode macro · Segher Boessenkool <hidden> · 2022-07-20

From: Segher Boessenkool <hidden>
Date: 2022-07-20 21:09:45

On Wed, Jul 20, 2022 at 11:21:31PM +1000, Nicholas Piggin wrote:

The wait instruction encoding changed between ISA v2.07 and ISA v3.0.
In v3.1 the instruction gained a new field.

Update the PPC_WAIT macro to the current encoding. Rename the older
incompatible one with a _v203 suffix as it was introduced in v2.03
(the WC field was introduced in v2.07 but the kernel only uses WC=0).

Ah, it wasn't just embedded in 2.03, I see.

Looks good to me, thanks!

Reviewed-by: Segher Boessenkool <redacted>


Segher

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