4.15-stable review patch. If anyone has any objections, please let me know.
------------------ From: Alexey Kardashevskiy <[email protected]> commit 62e984ddfd6b056d399e24113f5e6a7145e579d8 upstream. Radix guests do normally invalidate process-scoped translations when a new pid is allocated but migrated guests do not invalidate these so migrated guests crash sometime, especially easy to reproduce with migration happening within first 10 seconds after the guest boot start on the same machine. This adds the "Invalidate process-scoped translations" flush to fix radix guests migration. Fixes: 2ee13be34b13 ("KVM: PPC: Book3S HV: Update kvmppc_set_arch_compat() for ISA v3.00") Cc: [email protected] # v4.10+ Signed-off-by: Alexey Kardashevskiy <[email protected]> Tested-by: Laurent Vivier <[email protected]> Tested-by: Daniel Henrique Barboza <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/powerpc/mm/pgtable_64.c | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -483,6 +483,8 @@ void mmu_partition_table_set_entry(unsig if (old & PATB_HR) { asm volatile(PPC_TLBIE_5(%0,%1,2,0,1) : : "r" (TLBIEL_INVAL_SET_LPID), "r" (lpid)); + asm volatile(PPC_TLBIE_5(%0,%1,2,1,1) : : + "r" (TLBIEL_INVAL_SET_LPID), "r" (lpid)); trace_tlbie(lpid, 0, TLBIEL_INVAL_SET_LPID, lpid, 2, 0, 1); } else { asm volatile(PPC_TLBIE_5(%0,%1,2,0,0) : :
