xen/arm: mm: Add limited support for superpages

[PATCH RFC 0/6] xen/arm: mm: Add limited support for superpages

Julien Grall posted 6 patches 3 years, 5 months ago

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git fetch https://gitlab.com/xen-project/patchew/xen tags/patchew/20201119190751.22345-1-julien@xen.org

xen/arch/arm/mm.c          | 122 +++++++++++++++++++++++++++----------
xen/arch/arm/setup.c       |   3 +-
xen/include/asm-arm/page.h |   4 ++
3 files changed, 95 insertions(+), 34 deletions(-)

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[PATCH RFC 0/6] xen/arm: mm: Add limited support for superpages

Posted by Julien Grall 3 years, 5 months ago

From: Julien Grall <jgrall@amazon.com>

Hi all,

This is a first attempt to add superpage mapping in
xen_pt_update_entry(). The end goal if to remove open-coding mappings
which will help to:
  1) get better compliance with the Arm memory model
  2) pave the way for other page size (64KB, 16KB).

For now, only the open-code mappings for the Device-Tree is reworked.
The others will be added later.

Julien Grall (5):
  xen/arm: mm: Remove ; at the end of mm_printk()
  xen/arm: setup: Call unregister_init_virtual_region() after the last
    init function
  xen/arm: mm: Allow other mapping size in xen_pt_update_entry()
  xen/arm: mm: Don't open-code Xen PT update in remove_early_mappings
  xen/arm: mm: Re-implement early_fdt_map() using map_pages_to_xen()

Stefano Stabellini (1):
  xen/arm: mm: Remove special case for CPU0 in dump_hyp_walk()

 xen/arch/arm/mm.c          | 122 +++++++++++++++++++++++++++----------
 xen/arch/arm/setup.c       |   3 +-
 xen/include/asm-arm/page.h |   4 ++
 3 files changed, 95 insertions(+), 34 deletions(-)

-- 
2.17.1

Re: [PATCH RFC 0/6] xen/arm: mm: Add limited support for superpages

Posted by Julien Grall 3 years, 3 months ago

Hi,

On 19/11/2020 19:07, Julien Grall wrote:
> From: Julien Grall <jgrall@amazon.com>
> 
> Hi all,
> 
> This is a first attempt to add superpage mapping in
> xen_pt_update_entry(). The end goal if to remove open-coding mappings
> which will help to:
>    1) get better compliance with the Arm memory model
>    2) pave the way for other page size (64KB, 16KB).
> 
> For now, only the open-code mappings for the Device-Tree is reworked.
> The others will be added later.
> 
> Julien Grall (5):
>    xen/arm: mm: Remove ; at the end of mm_printk()
>    xen/arm: setup: Call unregister_init_virtual_region() after the last
>      init function

[...]

> 
> Stefano Stabellini (1):
>    xen/arm: mm: Remove special case for CPU0 in dump_hyp_walk()

I have committed the 3 patches above. The rest needs a respin which will 
only happen after 4.15.

Cheers,

-- 
Julien Grall