[PATCH QEMU] osdep: powerpc64 align memory to allow 2MB radix THP page tables
Nicholas Piggin
npiggin at gmail.com
Sun May 6 17:29:49 AEST 2018
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 at gmail.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 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
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