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From e54816f13676b09c4bd8899b466f8aafb9cf3d0e Mon Sep 17 00:00:00 2001
From: David Gibson <dgibson@redhat.com>
Date: Wed, 25 Jul 2018 07:35:49 +0100
Subject: [PATCH 02/14] osdep: powerpc64 align memory to allow 2MB radix THP
 page tables

RH-Author: David Gibson <dgibson@redhat.com>
Message-id: <20180725073549.9857-1-dgibson@redhat.com>
Patchwork-id: 81499
O-Subject: [RHEL-8.0 qemu-kvm PATCH] osdep: powerpc64 align memory to allow 2MB radix THP page tables
Bugzilla: 1601317
RH-Acked-by: Thomas Huth <thuth@redhat.com>
RH-Acked-by: Laurent Vivier <lvivier@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)

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1601317
Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=17346107

Signed-off-by: David Gibson <dgibson@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@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 4165806..5910682 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -357,7 +357,8 @@ 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