[v5,0/2] kvm/arm64: Try stage2 block mapping for host device MMIO

Message

zhukeqian May 7, 2021, 11:03 a.m. UTC

Hi Marc,

This rebases to newest mainline kernel.

Thanks,
Keqian


We have two pathes to build stage2 mapping for MMIO regions.

Create time's path and stage2 fault path.

Patch#1 removes the creation time's mapping of MMIO regions
Patch#2 tries stage2 block mapping for host device MMIO at fault path

Changelog:

v5:
 - Rebase to newest mainline.

v4:
 - use get_vma_page_shift() handle all cases. (Marc)
 - get rid of force_pte for device mapping. (Marc)

v3:
 - Do not need to check memslot boundary in device_rough_page_shift(). (Marc)


Keqian Zhu (2):
  kvm/arm64: Remove the creation time's mapping of MMIO regions
  kvm/arm64: Try stage2 block mapping for host device MMIO

 arch/arm64/kvm/mmu.c | 99 ++++++++++++++++++++++++--------------------
 1 file changed, 54 insertions(+), 45 deletions(-)

Comments

zhukeqian June 1, 2021, 1:16 a.m. UTC | #1

Hi Marc,

Kindly remind. :)

BRs,
Keqian

On 2021/5/7 19:03, Keqian Zhu wrote:
> Hi Marc,
> 
> This rebases to newest mainline kernel.
> 
> Thanks,
> Keqian
> 
> 
> We have two pathes to build stage2 mapping for MMIO regions.
> 
> Create time's path and stage2 fault path.
> 
> Patch#1 removes the creation time's mapping of MMIO regions
> Patch#2 tries stage2 block mapping for host device MMIO at fault path
> 
> Changelog:
> 
> v5:
>  - Rebase to newest mainline.
> 
> v4:
>  - use get_vma_page_shift() handle all cases. (Marc)
>  - get rid of force_pte for device mapping. (Marc)
> 
> v3:
>  - Do not need to check memslot boundary in device_rough_page_shift(). (Marc)
> 
> 
> Keqian Zhu (2):
>   kvm/arm64: Remove the creation time's mapping of MMIO regions
>   kvm/arm64: Try stage2 block mapping for host device MMIO
> 
>  arch/arm64/kvm/mmu.c | 99 ++++++++++++++++++++++++--------------------
>  1 file changed, 54 insertions(+), 45 deletions(-)
>

Marc Zyngier June 1, 2021, 11:07 a.m. UTC | #2

On Fri, 7 May 2021 19:03:20 +0800, Keqian Zhu wrote:
> This rebases to newest mainline kernel.
> 
> Thanks,
> Keqian
> 
> 
> We have two pathes to build stage2 mapping for MMIO regions.
> 
> [...]

Applied to next, thanks!

[1/2] kvm/arm64: Remove the creation time's mapping of MMIO regions
      commit: fd6f17bade2147b31198ad00b22d3acf5a398aec
[2/2] kvm/arm64: Try stage2 block mapping for host device MMIO
      commit: 2aa53d68cee6603931f73b28ef6b51ff3fde9397

Cheers,

	M.