From 030a2c689fb46e1690f7ded8b194bab7678efb28 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Mon, 3 Aug 2020 13:56:00 +1000 Subject: [PATCH] powerpc: Fix P10 PVR revision in /proc/cpuinfo for SMT4 cores On POWER10 bit 12 in the PVR indicates if the core is SMT4 or SMT8. Bit 12 is set for SMT4. Without this patch, /proc/cpuinfo on a SMT4 DD1 POWER10 looks like this: cpu : POWER10, altivec supported revision : 17.0 (pvr 0080 1100) Fixes: a3ea40d5c736 ("powerpc: Add POWER10 architected mode") Cc: stable@vger.kernel.org # v5.8 Signed-off-by: Michael Neuling Reviewed-by: Vaidyanathan Srinivasan Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200803035600.1820371-1-mikey@neuling.org --- arch/powerpc/kernel/setup-common.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index b198b0f..808ec9f 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -311,6 +311,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) min = pvr & 0xFF; break; case 0x004e: /* POWER9 bits 12-15 give chip type */ + case 0x0080: /* POWER10 bit 12 gives SMT8/4 */ maj = (pvr >> 8) & 0x0F; min = pvr & 0xFF; break; -- 2.7.4