From: Nicholas Piggin Date: Sun, 06 May 2018 07:29:49 +0000 Subject: [PATCH QEMU] osdep: powerpc64 align memory to allow 2MB radix THP page tables Message-Id: <20180506072949.12783-1-npiggin@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: qemu-ppc@nongnu.org Cc: Nicholas Piggin , David Gibson , Alexander Graf , kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org 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 --- 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 41658060a7..5910682221 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. */ -- 2.17.0