Re: [Regression 5.7-rc1] Random hangs on 32-bit PowerPC (PowerBook6,7)

2020-05-20 Thread Aneesh Kumar K.V
On 5/20/20 7:23 PM, Christophe Leroy wrote: Le 20/05/2020 à 15:43, Aneesh Kumar K.V a écrit : Christophe Leroy writes: Le 18/05/2020 à 17:19, Rui Salvaterra a écrit : Hi again, Christophe, On Mon, 18 May 2020 at 15:03, Christophe Leroy wrote: Can you try reverting

Re: [Regression 5.7-rc1] Random hangs on 32-bit PowerPC (PowerBook6,7)

2020-05-20 Thread Christophe Leroy
Le 20/05/2020 à 15:43, Aneesh Kumar K.V a écrit : Christophe Leroy writes: Le 18/05/2020 à 17:19, Rui Salvaterra a écrit : Hi again, Christophe, On Mon, 18 May 2020 at 15:03, Christophe Leroy wrote: Can you try reverting 697ece78f8f749aeea40f2711389901f0974017a ? It may have broken

Re: [Regression 5.7-rc1] Random hangs on 32-bit PowerPC (PowerBook6,7)

2020-05-20 Thread Aneesh Kumar K.V
Christophe Leroy writes: > Le 18/05/2020 à 17:19, Rui Salvaterra a écrit : >> Hi again, Christophe, >> >> On Mon, 18 May 2020 at 15:03, Christophe Leroy >> wrote: >>> >>> Can you try reverting 697ece78f8f749aeea40f2711389901f0974017a ? It may >>> have broken swap. >> >> Yeah, that was a good

Re: [Regression 5.7-rc1] Random hangs on 32-bit PowerPC (PowerBook6,7)

2020-05-18 Thread Rui Salvaterra
On Mon, 18 May 2020 at 18:15, Christophe Leroy wrote: > > Yeah I discovered recently that the way swap is implemented on powerpc > expects RW and other important bits not be one of the 3 least > significant bits (see __pte_to_swp_entry() ) I see, you get the swap entry by shifting the PTE right

Re: [Regression 5.7-rc1] Random hangs on 32-bit PowerPC (PowerBook6,7)

2020-05-18 Thread Christophe Leroy
Le 18/05/2020 à 17:19, Rui Salvaterra a écrit : Hi again, Christophe, On Mon, 18 May 2020 at 15:03, Christophe Leroy wrote: Can you try reverting 697ece78f8f749aeea40f2711389901f0974017a ? It may have broken swap. Yeah, that was a good call. :) Linux 5.7-rc1 with the revert on top

Re: [Regression 5.7-rc1] Random hangs on 32-bit PowerPC (PowerBook6,7)

2020-05-18 Thread Rui Salvaterra
Hi again, Christophe, On Mon, 18 May 2020 at 15:03, Christophe Leroy wrote: > > Can you try reverting 697ece78f8f749aeea40f2711389901f0974017a ? It may > have broken swap. Yeah, that was a good call. :) Linux 5.7-rc1 with the revert on top survives the beating. I'll be happy to test a

Re: [Regression 5.7-rc1] Random hangs on 32-bit PowerPC (PowerBook6,7)

2020-05-18 Thread Christophe Leroy
Hi On 05/18/2020 01:25 PM, Rui Salvaterra wrote: Hi, Christophe, On Mon, 18 May 2020 at 12:50, Christophe Leroy wrote: Can you provide your .config, tell which GCC version you are using, and tell a bit more about your config: amount of RAM, is there swap, etc ... Ok, so this laptop has

Re: [Regression 5.7-rc1] Random hangs on 32-bit PowerPC (PowerBook6,7)

2020-05-18 Thread Christophe Leroy
Hi, Le 18/05/2020 à 13:20, Rui Salvaterra a écrit : [Resending since I messed up the subject, sorry] Hi, everyone, Something went wrong between Linux 5.6 and 5.7-rc1. This is an iBook G4 laptop with 1.5 GiB of RAM running the Debian powerpc port. I haven't bisected yet, since it's going to

[Regression 5.7-rc1] Random hangs on 32-bit PowerPC (PowerBook6,7)

2020-05-18 Thread Rui Salvaterra
[Resending since I messed up the subject, sorry] Hi, everyone, Something went wrong between Linux 5.6 and 5.7-rc1. This is an iBook G4 laptop with 1.5 GiB of RAM running the Debian powerpc port. I haven't bisected yet, since it's going to take quite a bit of time, so I'm sending this mostly as a