As the comment in kvm_set_phys_mem() says, KVM works in page size chunks.
However it uses hardcoded TARGET_PAGE_SIZE which is 4K on most platforms
while actual host may use different page size, for example, PPC64 hosts
use 64K system pages.
This replaces static TARGET_PAGE_SIZE with run-time calculated
qemu_real_host_page_size.
Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
---
This is the result of debugging VFIO quirks not working under PPC64 KVM.
---
kvm-all.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 0be4615..6f04fbb 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -642,15 +642,15 @@ static void kvm_set_phys_mem(KVMMemoryListener *kml,
/* kvm works in page size chunks, but the function may be called
with sub-page size and unaligned start address. Pad the start
address to next and truncate size to previous page boundary. */
- delta = (TARGET_PAGE_SIZE - (start_addr & ~TARGET_PAGE_MASK));
- delta &= ~TARGET_PAGE_MASK;
+ delta = qemu_real_host_page_size - (start_addr &
~qemu_real_host_page_mask);
+ delta &= ~qemu_real_host_page_mask;
if (delta > size) {
return;
}
start_addr += delta;
size -= delta;
- size &= TARGET_PAGE_MASK;
- if (!size || (start_addr & ~TARGET_PAGE_MASK)) {
+ size &= qemu_real_host_page_mask;
+ if (!size || (start_addr & ~qemu_real_host_page_mask)) {
return;
}
--
2.5.0.rc3
