er...@gmail.com; ying...@kernel.org; Ingo Molnar
> Subject: Re: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
> inconsistent e820 map
>
> Hi!
> > > > > 3) I'm not sure I understand the changelog correctly. What
> > > > > happens when BIOS r
er...@gmail.com; ying...@kernel.org; Ingo Molnar
> Subject: Re: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
> inconsistent e820 map
>
> Hi!
> > > > > 3) I'm not sure I understand the changelog correctly. What
> > > > > happens when BIOS r
Hi!
> > > > 3) I'm not sure I understand the changelog correctly. What happens
> > > > when BIOS reports less memory on hibernation? Will you magically
> > > > remove memory from kernel at runtime? Will /proc/meminfo be invalid
> > after resume?
> > > > Will all the memory management tuning need
Hi!
> > > > 3) I'm not sure I understand the changelog correctly. What happens
> > > > when BIOS reports less memory on hibernation? Will you magically
> > > > remove memory from kernel at runtime? Will /proc/meminfo be invalid
> > after resume?
> > > > Will all the memory management tuning need
eyli.ker...@gmail.com; ying...@kernel.org; Ingo Molnar
> Subject: Re: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
> inconsistent e820 map
>
> > > 3) I'm not sure I understand the changelog correctly. What happens
> > > when BIOS reports less memory on hib
eyli.ker...@gmail.com; ying...@kernel.org; Ingo Molnar
> Subject: Re: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
> inconsistent e820 map
>
> > > 3) I'm not sure I understand the changelog correctly. What happens
> > > when BIOS reports less memory on hib
Hi!
> > But I still don't like the patch.
> >
> > 0) BIOS is broken, and this does not completely work around it. Users will
> > still
> > see the failed hibernation when the memory that is now unavailable was
> > actually used.
> >
> Unfortunately , yes :( the patch is trying to replace the
.org; linux-
> ker...@vger.kernel.org; Zhang, Rui; j...@suse.com;
> joeyli.ker...@gmail.com; ying...@kernel.org; Ingo Molnar
> Subject: Re: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
> inconsistent e820 map
>
> Yes, that's better.
>
> But I still don't like the pa
Hi!
> > > This is also because BIOS provides different e820 memory map
> > > before/after hibernation, and linux regards it as invalid process
> > > and refuses to resume, in order to protect against data corruption.
> > > However, this check might be too strict, consider the following
eyli.ker...@gmail.com; ying...@kernel.org
> Subject: Re: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
> inconsistent e820 map
>
> >With v3 patch applied, I did 30 cycles on my problematic platform,
> >no panic triggered anymore(50% reproducible before pat
own, Len; linux...@vger.kernel.org; linux-
> ker...@vger.kernel.org; Zhang, Rui; j...@suse.com;
> joeyli.ker...@gmail.com; ying...@kernel.org
> Subject: Re: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
> inconsistent e820 map
>
> > This is also because BIO
> v3:
> - Adjust the logic to exclude the end_pfn boundary in pfn_mapped
>when invoking mark_valid_pages, because the end_pfn is not
>a mapped page frame, we should not regard it as a valid page.
>
>Move the sanity check of valid pages to a early stage in resuming
>process(moved
> v3:
> - Adjust the logic to exclude the end_pfn boundary in pfn_mapped
>when invoking mark_valid_pages, because the end_pfn is not
>a mapped page frame, we should not regard it as a valid page.
>
>Move the sanity check of valid pages to a early stage in resuming
>process(moved
own, Len; linux...@vger.kernel.org; linux-
> ker...@vger.kernel.org; Zhang, Rui; j...@suse.com;
> joeyli.ker...@gmail.com; ying...@kernel.org
> Subject: Re: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
> inconsistent e820 map
>
> > This is also because BIO
eyli.ker...@gmail.com; ying...@kernel.org
> Subject: Re: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
> inconsistent e820 map
>
> >With v3 patch applied, I did 30 cycles on my problematic platform,
> >no panic triggered anymore(50% reproducible before pat
Hi!
> > > This is also because BIOS provides different e820 memory map
> > > before/after hibernation, and linux regards it as invalid process
> > > and refuses to resume, in order to protect against data corruption.
> > > However, this check might be too strict, consider the following
.org; linux-
> ker...@vger.kernel.org; Zhang, Rui; j...@suse.com;
> joeyli.ker...@gmail.com; ying...@kernel.org; Ingo Molnar
> Subject: Re: [PATCH] [v4] PM / hibernate: Fix hibernation panic caused by
> inconsistent e820 map
>
> Yes, that's better.
>
> But I still don't like the pa
Hi!
> > But I still don't like the patch.
> >
> > 0) BIOS is broken, and this does not completely work around it. Users will
> > still
> > see the failed hibernation when the memory that is now unavailable was
> > actually used.
> >
> Unfortunately , yes :( the patch is trying to replace the
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