On Mon, 19 Aug 2024 22:24:01 +1000, Michael Ellerman wrote:
> The dtl_access_lock needs to be a rw_sempahore, a sleeping lock, because
> the code calls kmalloc() while holding it, which can sleep:
>
> # echo 1 > /proc/powerpc/vcpudispatch_stats
> BUG: sleeping function called from invalid cont
Hi Michael,
Thanks for the patch, the patch looks fine to me.
Tested-by: Kajol Jain
Reviewed-by: Kajol Jain
Thanks,
Kajol Jain
On 8/19/24 17:54, Michael Ellerman wrote:
> The dtl_access_lock needs to be a rw_sempahore, a sleeping lock, because
> the code calls kmalloc() while holding it, whic
On Mon, Aug 19, 2024 at 10:24:01PM GMT, Michael Ellerman wrote:
> Fixes: 06220d78f24a ("powerpc/pseries: Introduce rwlock to gatekeep DTLB
> usage")
> Signed-off-by: Michael Ellerman
> ---
> arch/powerpc/include/asm/dtl.h| 3 ++-
> arch/powerpc/platforms/pseries/dtl.c | 8
>
The dtl_access_lock needs to be a rw_sempahore, a sleeping lock, because
the code calls kmalloc() while holding it, which can sleep:
# echo 1 > /proc/powerpc/vcpudispatch_stats
BUG: sleeping function called from invalid context at
include/linux/sched/mm.h:337
in_atomic(): 1, irqs_disabled()
