On 2019-10-17 21:53, ma...@freebsd.org wrote:
On Thu, Oct 17, 2019 at 03:03:51PM +0200, Niclas Zeising wrote:
On 2019-10-16 18:57, Neel Chauhan wrote:
While drm-current-kmod worked for a little while, it broke with r353645.
https://i.imgur.com/Q5nYZf2.jpg
I'm using the same HP Spectre that I used earlier (where it worked and
where it panicked).
That commit looks unrelated, it touches the wbwd and superio drivers,
nothing else. Any chance you can bisect exactly which revision that
caused the new issues?
I believe it was the recent work on the vm page busy state, r353539
specifically. This patch should fix it; we don't yet have a
__FreeBSD_version number bump on which to gate the patch.
diff --git a/linuxkpi/gplv2/src/linux_page.c b/linuxkpi/gplv2/src/linux_page.c
index e2b85c45c..060ae85ed 100644
--- a/linuxkpi/gplv2/src/linux_page.c
+++ b/linuxkpi/gplv2/src/linux_page.c
@@ -239,7 +239,7 @@ retry:
page = vm_page_lookup(devobj, i);
if (page == NULL)
continue;
- if (vm_page_sleep_if_busy(page, "linuxkpi"))
+ if (!vm_page_busy_acquire(page, VM_ALLOC_WAITFAIL))
goto retry;
cdev_pager_free_page(devobj, page);
}
Hi!
Hopefully someone can confirm that this patch to drm-current-kmod or
drm-devel-kmod fixes the issue. I won't be able to work on this before
the weekend at the earliest, I'm afraid.
Mark, is it possible to get a belated version bump for this fix, and
what changed to require it?
Thanks!
Regards
--
Niclas
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