On 10/21/2019 4:14 AM, Neel Chauhan wrote:
For me, the following code is still necessary for me (HP Spectre x360
2018), which is the remaining parts of the patches not committed if you
are using a recent kernel. I don't know about you all ThinkPad users, it
should still apply as it's Intel in general not just HP or Lenovo.
Without these patches, I get a kernel panic.
Keep in mind that the patch may render as spaces, but it should be tabs.
Index: amd64/pmap.c
===================================================================
--- amd64/pmap.c (revision 353788)
+++ amd64/pmap.c (working copy)
@@ -355,8 +355,9 @@
} \
} while (0)
-#define CHANGE_PV_LIST_LOCK_TO_VM_PAGE(lockp, m) \
- CHANGE_PV_LIST_LOCK_TO_PHYS(lockp, VM_PAGE_TO_PHYS(m))
+#define CHANGE_PV_LIST_LOCK_TO_VM_PAGE(lockp, m) do { \
+ CHANGE_PV_LIST_LOCK_TO_PHYS(lockp, VM_PAGE_TO_PHYS(m)); \
+} while (0)
#define RELEASE_PV_LIST_LOCK(lockp) do { \
struct rwlock **_lockp = (lockp); \
@@ -951,8 +952,16 @@
static u_long *
pmap_delayed_invl_genp(vm_page_t m)
{
+ vm_paddr_t pa;
+ u_long *gen;
- return (&pa_to_pmdp(VM_PAGE_TO_PHYS(m))->pv_invl_gen);
+ pa = VM_PAGE_TO_PHYS(m);
+ if (__predict_false((pa) > pmap_last_pa))
+ gen = &pv_dummy_large.pv_invl_gen;
+ else
+ gen = &(pa_to_pmdp(pa)->pv_invl_gen);
+
+ return (gen);
}
#else
static u_long *
If you look below, that's exactly the patch mjg@ provided and Xin
pointed you at.
On 2019-10-20 02:45, Yuri Pankov wrote:
On 10/18/2019 8:01 AM, Xin Li wrote:
Another (semi-fixed!) data point -- I can confirm that with if
(vm_page_sleep_if_busy(page, "linuxkpi"))
-> if (!vm_page_busy_acquire(page, VM_ALLOC_WAITFAIL)) change and
mjg@'s earlier patch at
https://people.freebsd.org/~mjg/pmap-fict-invl.diff (please commit it) ,
the latest drm-v5.0 branch of drm-current-kmod worked just fine with
Intel HD Graphics P630 on Lenovo P51.
Confirmed that it worked for me too on P51.
Sorry for offtopic, but do you see the console getting "stuck" after
loading i915kms, i.e. for input to show you need to switch to another
console and back?
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