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authorMichael Neuling <mikey@neuling.org>2020-08-03 06:56:00 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2020-08-17 06:11:22 +0300
commit030a2c689fb46e1690f7ded8b194bab7678efb28 (patch)
tree6fece2a8ae8eec2fc286f8107305465452024d74 /arch
parent9123e3a74ec7b934a4a099e98af6a61c2f80bbf5 (diff)
downloadlinux-030a2c689fb46e1690f7ded8b194bab7678efb28.tar.xz
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 <mikey@neuling.org> Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200803035600.1820371-1-mikey@neuling.org
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/setup-common.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index b198b0ff25bc..808ec9fab605 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;