From 7ac01358cfb1a7900cfc4b39714f9affb817dda0 Mon Sep 17 00:00:00 2001
From: David Gibson <dgibson@redhat.com>
Date: Mon, 16 Jul 2018 05:49:55 +0200
Subject: [PATCH 45/89] osdep: powerpc64 align memory to allow 2MB radix THP
 page tables

RH-Author: David Gibson <dgibson@redhat.com>
Message-id: <20180716054955.12926-1-dgibson@redhat.com>
Patchwork-id: 81358
O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH] osdep: powerpc64 align memory to allow 2MB radix THP page tables
Bugzilla: 1600797
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
RH-Acked-by: Serhii Popovych <spopovyc@redhat.com>

From: Nicholas Piggin <npiggin@gmail.com>

This allows KVM with the Book3S radix MMU mode to take advantage of
THP and install larger pages in the partition scope page tables (the
host translation).

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
(cherry picked from commit 0c1272cc7c72dfe0ef66be8f283cf67c74b58586)

Signed-off-by: David Gibson <dgibson@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 include/qemu/osdep.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index afc28e5..9ed6242 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -367,7 +367,8 @@ void qemu_anon_ram_free(void *ptr, size_t size);
 #endif
 
 #if defined(__linux__) && \
-    (defined(__x86_64__) || defined(__arm__) || defined(__aarch64__))
+    (defined(__x86_64__) || defined(__arm__) || defined(__aarch64__) \
+     || defined(__powerpc64__))
    /* Use 2 MiB alignment so transparent hugepages can be used by KVM.
       Valgrind does not support alignments larger than 1 MiB,
       therefore we need special code which handles running on Valgrind. */
-- 
1.8.3.1