From 7ac01358cfb1a7900cfc4b39714f9affb817dda0 Mon Sep 17 00:00:00 2001 From: David Gibson 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 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 RH-Acked-by: Thomas Huth RH-Acked-by: Serhii Popovych From: Nicholas Piggin 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 Signed-off-by: David Gibson (cherry picked from commit 0c1272cc7c72dfe0ef66be8f283cf67c74b58586) Signed-off-by: David Gibson Signed-off-by: Miroslav Rezanina --- 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