Re: 3.10-rc ppc64 corrupts usermem when swapping

2013-06-02 Thread Aneesh Kumar K.V
Benjamin Herrenschmidt writes: > On Fri, 2013-05-31 at 14:45 +0530, Aneesh Kumar K.V wrote: > >> > The patch you are running on is what I'll send to Linus for 3.10 (+/- >> > cosmetics). Aneesh second patch is a much larger rework which will be >> > needed for THP but that will wait for 3.11. I'm

Re: 3.10-rc ppc64 corrupts usermem when swapping

2013-05-31 Thread Benjamin Herrenschmidt
On Fri, 2013-05-31 at 14:45 +0530, Aneesh Kumar K.V wrote: > > The patch you are running on is what I'll send to Linus for 3.10 (+/- > > cosmetics). Aneesh second patch is a much larger rework which will be > > needed for THP but that will wait for 3.11. I'm happy for you to test it > > but I firs

Re: 3.10-rc ppc64 corrupts usermem when swapping

2013-05-30 Thread Benjamin Herrenschmidt
On Thu, 2013-05-30 at 22:05 -0700, Hugh Dickins wrote: > > Sure, it's now under way. If all goes well, I'll give you a > > progress report in about 15 hours time; but given the variance in > > how long it took to hit, I won't feel fully confident until this > > time tomorrow, when I'll update you

Re: 3.10-rc ppc64 corrupts usermem when swapping

2013-05-30 Thread Aneesh Kumar K.V
"Aneesh Kumar K.V" writes: > Benjamin Herrenschmidt writes: > >> On Wed, 2013-05-29 at 22:47 -0700, Hugh Dickins wrote: >>> Running my favourite swapping load (repeated make -j20 kernel builds >>> in tmpfs in parallel with repeated make -j20 kernel builds in ext4 on >>> loop on tmpfs file, all l

Re: 3.10-rc ppc64 corrupts usermem when swapping

2013-05-30 Thread Aneesh Kumar K.V
Benjamin Herrenschmidt writes: > On Wed, 2013-05-29 at 22:47 -0700, Hugh Dickins wrote: >> Running my favourite swapping load (repeated make -j20 kernel builds >> in tmpfs in parallel with repeated make -j20 kernel builds in ext4 on >> loop on tmpfs file, all limited by mem=700M and swap 1.5G) on

Re: 3.10-rc ppc64 corrupts usermem when swapping

2013-05-30 Thread Benjamin Herrenschmidt
On Thu, 2013-05-30 at 13:57 +0530, Aneesh Kumar K.V wrote: > + /* FIXME!!, will fail with when we enable hugepage > support */ Just fix that to say "Transparent huge pages" as normal huge pages should work fine unless I'm missing something. Hugh, any chance you can give that a spin

Re: 3.10-rc ppc64 corrupts usermem when swapping

2013-05-30 Thread Benjamin Herrenschmidt
On Wed, 2013-05-29 at 22:47 -0700, Hugh Dickins wrote: > Running my favourite swapping load (repeated make -j20 kernel builds > in tmpfs in parallel with repeated make -j20 kernel builds in ext4 on > loop on tmpfs file, all limited by mem=700M and swap 1.5G) on 3.10-rc > on PowerMac G5, the test di