accel/kvm: avoid using predefined PAGE_SIZE

As per POSIX specification of limits.h [1], OS libc may define PAGE_SIZE in limits.h. PAGE_SIZE is used in included kernel uapi headers. To prevent collosion of definition, we discard PAGE_SIZE from defined by libc and take QEMU's variable. [1]: https://pubs.opengroup.org/onlinepubs/7908799/xsh/limits.h.html Signed-off-by: Jiaxun Yang <[email protected]> Message-Id: <[email protected]> Signed-off-by: Thomas Huth <[email protected]>
revng · Jan 20, 2021 · eb8b1a7 · eb8b1a7
1 parent d2c4f38
commit eb8b1a7
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
@@ -58,6 +58,9 @@
 /* KVM uses PAGE_SIZE in its definition of KVM_COALESCED_MMIO_MAX. We
  * need to use the real host PAGE_SIZE, as that's what KVM will use.
  */
+#ifdef PAGE_SIZE
+#undef PAGE_SIZE
+#endif
 #define PAGE_SIZE qemu_real_host_page_size
 
 //#define DEBUG_KVM