ngy...@amazon.com; Jan Beulich
> ; Volodymyr Babchuk
> ; Roger Pau Monné
> Subject: [Xen-devel] [PATCH 1/2] xen/mm: fold PGC_broken into PGC_state bits
>
> From: David Woodhouse
>
> Only PGC_state_offlining and PGC_state_offlined are valid in conjunction
> with PGC_broken. The othe
From: David Woodhouse
Only PGC_state_offlining and PGC_state_offlined are valid in conjunction
with PGC_broken. The other two states (free and inuse) were never valid
for a broken page.
By folding PGC_broken in, we can have three bits for PGC_state which
allows up to 8 states, of which 6 are cur
On 19.03.2020 14:54, David Woodhouse wrote:
> On Thu, 2020-03-19 at 12:59 +0100, Jan Beulich wrote:
>>> Read that message again from the point of view of a contributor.
>>> Pretend it isn't even me; pretend it's someone attempting to make
>>> their first, trivial, improvement to the Xen ecosystem.
On Thu, 2020-03-19 at 12:59 +0100, Jan Beulich wrote:
> > Read that message again from the point of view of a contributor.
> > Pretend it isn't even me; pretend it's someone attempting to make
> > their first, trivial, improvement to the Xen ecosystem.
> >
> > I hope you'll understand why my initi
On 19.03.2020 11:26, David Woodhouse wrote:
> On Thu, 2020-03-19 at 09:49 +0100, Jan Beulich wrote:
>> On 18.03.2020 18:13, David Woodhouse wrote:
>>> The -MP makefile patch I posted yesterday... I almost didn't bother.
>>> And when I allowed myself to be talked into it, I was entirely
>>> unsurpri
On Thu, 2020-03-19 at 09:49 +0100, Jan Beulich wrote:
> On 18.03.2020 18:13, David Woodhouse wrote:
> > On Wed, 2020-03-18 at 12:31 +, Julien Grall wrote:
> > > On 18/03/2020 09:56, Jan Beulich wrote:
> > > > On 17.03.2020 22:52, David Woodhouse wrote:
> > > > > On Thu, 2020-02-20 at 12:10 +010
On 18.03.2020 18:13, David Woodhouse wrote:
> On Wed, 2020-03-18 at 12:31 +, Julien Grall wrote:
>> On 18/03/2020 09:56, Jan Beulich wrote:
>>> On 17.03.2020 22:52, David Woodhouse wrote:
On Thu, 2020-02-20 at 12:10 +0100, Jan Beulich wrote:
>> @@ -1699,14 +1714,14 @@ unsigned int onli
On Wed, 2020-03-18 at 12:31 +, Julien Grall wrote:
> On 18/03/2020 09:56, Jan Beulich wrote:
> > On 17.03.2020 22:52, David Woodhouse wrote:
> > > On Thu, 2020-02-20 at 12:10 +0100, Jan Beulich wrote:
> > > > > @@ -1699,14 +1714,14 @@ unsigned int online_page(mfn_t mfn,
> > > > > uint32_t *stat
On 18.03.2020 13:31, Julien Grall wrote:
> On 18/03/2020 09:56, Jan Beulich wrote:
>> On 17.03.2020 22:52, David Woodhouse wrote:
>>> On Thu, 2020-02-20 at 12:10 +0100, Jan Beulich wrote:
On 07.02.2020 16:57, David Woodhouse wrote:
> +#define page_is_offlining(pg) (page_state_is((pg),
Hi Jan,
On 18/03/2020 09:56, Jan Beulich wrote:
On 17.03.2020 22:52, David Woodhouse wrote:
On Thu, 2020-02-20 at 12:10 +0100, Jan Beulich wrote:
On 07.02.2020 16:57, David Woodhouse wrote:
@@ -1145,16 +1145,19 @@ static int reserve_offlined_page(struct
page_info *head)
for ( cur_head =
On 17.03.2020 22:52, David Woodhouse wrote:
On Thu, 2020-02-20 at 12:10 +0100, Jan Beulich wrote:
On 07.02.2020 16:57, David Woodhouse wrote:
@@ -1145,16 +1145,19 @@ static int reserve_offlined_page(struct
page_info *head)
for ( cur_head = head; cur_head < head + ( 1UL << head_order);
On Thu, 2020-02-20 at 12:10 +0100, Jan Beulich wrote:
> On 07.02.2020 16:57, David Woodhouse wrote:
> > @@ -1145,16 +1145,19 @@ static int reserve_offlined_page(struct
> > page_info *head)
> >
> > for ( cur_head = head; cur_head < head + ( 1UL << head_order);
> > cur_head++ )
> > {
> >
On Fri, 2020-02-07 at 20:27 +, Julien Grall wrote:
> > +switch ( x & PGC_state )
> > {
> > -nx &= ~PGC_state;
> > -nx |= (((x & PGC_state) == PGC_state_free)
> > - ? PGC_state_offlined : PGC_state_offlining);
> > -}
> > +
On 07.02.2020 16:57, David Woodhouse wrote:
> @@ -1145,16 +1145,19 @@ static int reserve_offlined_page(struct page_info
> *head)
>
> for ( cur_head = head; cur_head < head + ( 1UL << head_order);
> cur_head++ )
> {
> -if ( !page_state_is(cur_head, offlined) )
> +struct
On 09/02/2020 13:22, David Woodhouse wrote:
On Fri, 2020-02-07 at 20:27 +, Julien Grall wrote:
Could you please send the series in a separate thread? So we don't mix
the two discussions (i.e merge and free on boot allocated page) together.
Well, they're all part of the same mess, really.
On Fri, 2020-02-07 at 20:27 +, Julien Grall wrote:
> Could you please send the series in a separate thread? So we don't mix
> the two discussions (i.e merge and free on boot allocated page) together.
Well, they're all part of the same mess, really.
There are cases where pages end up in free_
Hi David,
Could you please send the series in a separate thread? So we don't mix
the two discussions (i.e merge and free on boot allocated page) together.
On 07/02/2020 15:57, David Woodhouse wrote:
From: David Woodhouse
Only PGC_state_offlining and PGC_state_offlined are valid in conjuncti
From: David Woodhouse
Only PGC_state_offlining and PGC_state_offlined are valid in conjunction
with PGC_broken. The other two states (free and inuse) were never valid
for a broken page.
By folding PGC_broken in, we can have three bits for PGC_state which
allows up to 8 states, of which 6 are cur
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