On Tue, 2017-05-09 at 04:37 +0200, Mike Galbraith wrote:
> On Mon, 2017-05-08 at 16:48 -0300, Gabriel Krisman Bertazi wrote:
>
> > Thanks for reporting this. Can you confirm the following patch prevents
> > the issue?
>
> Nope, it still gripes.
The reason for this gripe is that we find that we don't have memory
reserved.. a tad too late.
Xorg-2252 [000] .... 135.409756: qxl_release_map
<-qxl_cursor_atomic_update
Xorg-2252 [000] .... 135.409756: qxl_bo_kmap_atomic_page
<-qxl_release_map
Xorg-2252 [000] .... 135.409757: qxl_bo_kmap_atomic_page: ENTER
Xorg-2252 [000] .... 135.409757: ttm_mem_io_lock
<-qxl_bo_kmap_atomic_page
Xorg-2252 [000] .... 135.409757: ttm_mem_io_reserve
<-qxl_bo_kmap_atomic_page
Xorg-2252 [000] .... 135.409757: qxl_ttm_io_mem_reserve
<-ttm_mem_io_reserve
Xorg-2252 [000] .... 135.409757: ttm_mem_io_unlock
<-qxl_bo_kmap_atomic_page
Xorg-2252 [000] .... 135.409757: qxl_bo_kmap_atomic_page:
PREEMPTION DISABLED
Xorg-2252 [000] ...1 135.409758: qxl_bo_kmap
<-qxl_cursor_atomic_update
Xorg-2252 [000] ...1 135.409758: ttm_bo_kmap <-qxl_bo_kmap <==
too late
Xorg-2252 [000] ...1 135.409758: ttm_mem_io_reserve <-ttm_bo_kmap
Xorg-2252 [000] ...1 135.409758: qxl_ttm_io_mem_reserve
<-ttm_mem_io_reserve
Xorg-2252 [000] ...1 135.409759: ioremap_nocache <-ttm_bo_kmap
<== game over
Xorg-2252 [000] ...1 135.409759: __ioremap_caller
<-ioremap_nocache
Xorg-2252 [000] ...1 135.409759: walk_system_ram_range
<-__ioremap_caller
Xorg-2252 [000] ...1 135.409759: find_next_iomem_res
<-walk_system_ram_range
Xorg-2252 [000] ...1 135.409759: _raw_read_lock
<-find_next_iomem_res
Xorg-2252 [000] ...1 135.409760: reserve_memtype
<-__ioremap_caller
Xorg-2252 [000] ...1 135.409760: pat_pagerange_is_ram
<-reserve_memtype
Xorg-2252 [000] ...1 135.409761: walk_system_ram_range
<-pat_pagerange_is_ram
Xorg-2252 [000] ...1 135.409761: find_next_iomem_res
<-walk_system_ram_range
Xorg-2252 [000] ...1 135.409761: _raw_read_lock
<-find_next_iomem_res
Xorg-2252 [000] ...1 135.409761: kmem_cache_alloc_trace
<-reserve_memtype
Xorg-2252 [000] ...1 135.409761: __might_sleep
<-kmem_cache_alloc_trace
Xorg-2252 [000] ...1 135.409762: ___might_sleep <-__might_sleep
