From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:37810 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752939AbeBSQqW (ORCPT ); Mon, 19 Feb 2018 11:46:22 -0500 Subject: Patch "powerpc/mm: Flush radix process translations when setting MMU type" has been added to the 4.15-stable tree To: aik@ozlabs.ru, danielhb@linux.vnet.ibm.com, gregkh@linuxfoundation.org, lvivier@redhat.com, mpe@ellerman.id.au Cc: , From: Date: Mon, 19 Feb 2018 17:43:00 +0100 Message-ID: <15190585807672@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled powerpc/mm: Flush radix process translations when setting MMU type to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: powerpc-mm-flush-radix-process-translations-when-setting-mmu-type.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 62e984ddfd6b056d399e24113f5e6a7145e579d8 Mon Sep 17 00:00:00 2001 From: Alexey Kardashevskiy Date: Thu, 1 Feb 2018 16:09:44 +1100 Subject: powerpc/mm: Flush radix process translations when setting MMU type From: Alexey Kardashevskiy 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: stable@vger.kernel.org # v4.10+ Signed-off-by: Alexey Kardashevskiy Tested-by: Laurent Vivier Tested-by: Daniel Henrique Barboza Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman --- 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) : : Patches currently in stable-queue which might be from aik@ozlabs.ru are queue-4.15/powerpc-mm-flush-radix-process-translations-when-setting-mmu-type.patch