| Message ID | 1417020616-21654-1-git-send-email-stefanha@redhat.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index c085804..e71e47e 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -329,7 +329,8 @@ extern RAMList ram_list; /* Zero if TLB entry is valid. */ #define TLB_INVALID_MASK (1 << 3) /* Set if TLB entry references a clean RAM page. The iotlb entry will - contain the page physical address. */ + contain the page physical address. Forces us to take the slow path so pages + get marked dirty, whereas the fast path does not mark pages dirty. */ #define TLB_NOTDIRTY (1 << 4) /* Set if TLB entry is an IO callback. */ #define TLB_MMIO (1 << 5)
It wasn't obvious to me why the TLB entries should cache the memory dirty bitmap state. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> --- include/exec/cpu-all.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)