Romain Dolbeau <rom...@dolbeau.org> writes: > Le sam. 21 déc. 2019 à 05:31, Aneesh Kumar K.V > <aneesh.ku...@linux.ibm.com> a écrit : >> I don't have direct access to this system, I have asked if we can get a run >> with 64K. > > OK, thanks! Do you know which model it is? It seems to be working on > some systems, > but we don't have enough samples to figure out why at this time, I think. > >> Meanwhile is there a way to find out what caused MachineCheck? more >> details on this? I was checking the manual and I don't see any >> restrictions w.r.t effective address. We now have very high EA with 64K >> page size. > > Sorry, no idea, completely out of my depth here. I can try some kernel > (build, runtime) options and/or patch, but someone will have to tell > me what to try, > as I have no ideas.
Can you try this change. modified arch/powerpc/include/asm/book3s/64/mmu-hash.h @@ -580,7 +580,7 @@ extern void slb_set_size(u16 size); #if (MAX_PHYSMEM_BITS > MAX_EA_BITS_PER_CONTEXT) #define MAX_KERNEL_CTX_CNT (1UL << (MAX_PHYSMEM_BITS - MAX_EA_BITS_PER_CONTEXT)) #else -#define MAX_KERNEL_CTX_CNT 1 +#define MAX_KERNEL_CTX_CNT 4 #endif #define MAX_VMALLOC_CTX_CNT 1 -aneesh
