On Mon, May 18, 2020 at 11:09:46AM -0700, Guenter Roeck wrote:
> On 5/18/20 7:23 AM, Mike Rapoport wrote:
> > On Mon, May 18, 2020 at 02:48:18AM -0700, Guenter Roeck wrote:
> >> On 5/18/20 1:37 AM, Will Deacon wrote:
> >>> On Sat, May 16, 2020 at 05:07:50PM -0700, Guenter Roeck wrote:
> >>>> On Sat, May 16, 2020 at 05:00:50PM -0700, Guenter Roeck wrote:
> >>>>> On Mon, May 11, 2020 at 09:41:36PM +0100, Will Deacon wrote:
> >>>>>> Now that the page table allocator can free page table allocations
> >>>>>> smaller than PAGE_SIZE, reduce the size of the PMD and PTE allocations
> >>>>>> to avoid needlessly wasting memory.
> >>>>>>
> >>>>>> Cc: "David S. Miller" <da...@davemloft.net>
> >>>>>> Cc: Peter Zijlstra <pet...@infradead.org>
> >>>>>> Signed-off-by: Will Deacon <w...@kernel.org>
> >>>>>
> >>>>> Something in the sparc32 patches in linux-next causes all my sparc32
> >>>>> emulations
> >>>>> to crash. bisect points to this patch, but reverting it doesn't help,
> >>>>> and neither
> >>>>> does reverting the rest of the series.
> >>>>>
> >>>> Actually, turns out I see the same pattern (lots of scheduling while
> >>>> atomic
> >>>> followed by 'killing interrupt handler' in cryptomgr_test) with several
> >>>> powerpc boot tests. I am currently bisecting those crashes. I'll report
> >>>> the results here as well as soon as I have it.
> >>>
> >>> FWIW, I retested my sparc32 patches with PREEMPT=y and I don't see any
> >>> issues. However, linux-next is a different story, where I don't get very
> >>> far
> >>> at all:
> >>>
> >>> BUG: Bad page state in process swapper pfn:005b4
> >
> > This one seems to be due to commit 24aab577764f ("mm: memmap_init:
> > iterate over memblock regions rather that check each PFN") and reverting
> > it and partially reverting the next cleanup commits makes those
> > dissapear. sparc32 boot still fails on today's linux-next and mmotm for me
> > with
> >
> > Run /sbin/init as init process
> > with arguments:
> > /sbin/init
> > with environment:
> > HOME=/
> > TERM=linux
> > Starting init: /sbin/init exists but couldn't execute it (error -14)
> >
> > I've tried to bisect mmotm and I've got the first bad commits in
> > different places in the middle of arch/kmap series [1] so I've added Ira
> > to CC as well :)
> >
> > I'll continue to look into "bad page" on sparc32
mips is broken too.
Does anyone know what this FIXME was for?
...
if (vaddr < FIXADDR_START) { // FIXME
...
I'm going to remove it...
Ira
