Re: [PATCH v2 10/19] ppc/pnv: Add a big-core mode that joins two regular cores

2024-07-14 Thread Nicholas Piggin
On Sat Jul 13, 2024 at 5:19 PM AEST, Cédric Le Goater wrote: > On 7/12/24 14:02, Nicholas Piggin wrote: > > POWER9 and POWER10 machines come in two variants, big-core and > > small-core. Big-core machines are SMT8 from software's point of view, > > but the low level platform topology ("xscom regist

Re: [PATCH v2 10/19] ppc/pnv: Add a big-core mode that joins two regular cores

2024-07-13 Thread Cédric Le Goater
On 7/12/24 14:02, Nicholas Piggin wrote: POWER9 and POWER10 machines come in two variants, big-core and small-core. Big-core machines are SMT8 from software's point of view, but the low level platform topology ("xscom registers and pervasive addressing"), these look more like a pair of small core

[PATCH v2 10/19] ppc/pnv: Add a big-core mode that joins two regular cores

2024-07-12 Thread Nicholas Piggin
POWER9 and POWER10 machines come in two variants, big-core and small-core. Big-core machines are SMT8 from software's point of view, but the low level platform topology ("xscom registers and pervasive addressing"), these look more like a pair of small cores ganged together. Presently the way this