This kernel seems to be missing a change that is present in the upstream version of the patch.
See: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/powerpc/lib/feature-fixups.c?commit=a048a07d7f4535baa4cbad6bc024f175317ab938#n189 --- a/arch/powerpc/lib/feature-fixups.c 2018-05-24 23:31:52.497801437 +1000 +++ b/arch/powerpc/lib/feature-fixups.c 2018-05-24 23:29:18.141606123 +1000 @@ -185,12 +186,21 @@ i = 0; if (types & STF_BARRIER_FALLBACK || types & STF_BARRIER_SYNC_ORI) { - instrs[i++] = 0x7db243a6; /* mtsprg 2,r13 */ - instrs[i++] = 0x7db142a6; /* mfsprg r13,1 */ + if (cpu_has_feature(CPU_FTR_HVMODE)) { + instrs[i++] = 0x7db14ba6; /* mtspr 0x131, r13 (HSPRG1) */ + instrs[i++] = 0x7db04aa6; /* mfspr r13, 0x130 (HSPRG0) */ + } else { + instrs[i++] = 0x7db243a6; /* mtsprg 2,r13 */ + instrs[i++] = 0x7db142a6; /* mfsprg r13,1 */ + } instrs[i++] = 0x7c0004ac; /* hwsync */ instrs[i++] = 0xe9ad0000; /* ld r13,0(r13) */ instrs[i++] = 0x63ff0000; /* ori 31,31,0 speculation barrier */ - instrs[i++] = 0x7db242a6; /* mfsprg r13,2 */ + if (cpu_has_feature(CPU_FTR_HVMODE)) { + instrs[i++] = 0x7db14aa6; /* mfspr r13, 0x131 (HSPRG1) */ + } else { + instrs[i++] = 0x7db242a6; /* mfsprg r13,2 */ + } } else if (types & STF_BARRIER_EIEIO) { instrs[i++] = 0x7e0006ac; /* eieio + bit 6 hint */ } -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1773162 Title: 4.15.0-22-generic fails to boot on IBM S822LC (POWER8 (raw), altivec supported) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1773162/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
