Re: x86: mm: Fix vmalloc_fault oops during lazy MMU updates.

2013-02-22 Thread Konrad Rzeszutek Wilk
On Thu, Feb 21, 2013 at 05:56:35PM +0200, Samu Kallio wrote: > On Thu, Feb 21, 2013 at 2:33 PM, Konrad Rzeszutek Wilk > wrote: > > On Sun, Feb 17, 2013 at 02:35:52AM -, Samu Kallio wrote: > >> In paravirtualized x86_64 kernels, vmalloc_fault may cause an oops > >> when lazy MMU updates are ena

Re: x86: mm: Fix vmalloc_fault oops during lazy MMU updates.

2013-02-21 Thread Samu Kallio
On Thu, Feb 21, 2013 at 2:33 PM, Konrad Rzeszutek Wilk wrote: > On Sun, Feb 17, 2013 at 02:35:52AM -, Samu Kallio wrote: >> In paravirtualized x86_64 kernels, vmalloc_fault may cause an oops >> when lazy MMU updates are enabled, because set_pgd effects are being >> deferred. >> >> One instance

Re: x86: mm: Fix vmalloc_fault oops during lazy MMU updates.

2013-02-21 Thread Konrad Rzeszutek Wilk
On Sun, Feb 17, 2013 at 02:35:52AM -, Samu Kallio wrote: > In paravirtualized x86_64 kernels, vmalloc_fault may cause an oops > when lazy MMU updates are enabled, because set_pgd effects are being > deferred. > > One instance of this problem is during process mm cleanup with memory > cgroups e