diff options
Diffstat (limited to 'tools/guest-diag/guest_pin_stream.py')
| -rw-r--r-- | tools/guest-diag/guest_pin_stream.py | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/guest-diag/guest_pin_stream.py b/tools/guest-diag/guest_pin_stream.py index b56f79d..175ed23 100644 --- a/tools/guest-diag/guest_pin_stream.py +++ b/tools/guest-diag/guest_pin_stream.py @@ -1819,6 +1819,32 @@ def main(): except Exception: ok = False got = [] + # r586: a demanded VA outside the CE + # pushbuffer window (the GRFILL staging pages, + # high client VAs) is a plain client mapping + # page: resolve it through the client's own + # pagemap. Without this the demand for those + # VAs was a silent no-op (resolve_va_by_content + # rejects anything outside PB_CE_LO..PB_CE_HI) + # and the fills kept dropping them. + if not ok and not got and pid: + try: + pfd = os.open('/proc/%d/pagemap' % pid, + os.O_RDONLY) + try: + sub = {} + vpg = wv & ~0xFFF + scan_range(pfd, vpg, vpg + 0x1000, + sub) + finally: + os.close(pfd) + if sub: + for v, p in sub.items(): + got.append('0x%x,0x%x,1\n' + % (v, p)) + ok = True + except OSError: + pass if ok and got: lines.extend(got) _want_state["done"].add(wv) |