Re: [PATCH v4 2/2] kvm/arm64: Try stage2 block mapping for host device MMIO

Hi Marc, On 2021/4/16 22:44, Marc Zyngier wrote: > On Thu, 15 Apr 2021 15:08:09 +0100, > Keqian Zhu wrote: >> >> Hi Marc, >> >> On 2021/4/15 22:03, Keqian Zhu wrote: >>> The MMIO region of a device maybe huge (GB level), try to use >>> block mapping in stage2 to speedup both map and unmap. >>>

Re: [PATCH v4 2/2] kvm/arm64: Try stage2 block mapping for host device MMIO

On Thu, 15 Apr 2021 15:08:09 +0100, Keqian Zhu wrote: > > Hi Marc, > > On 2021/4/15 22:03, Keqian Zhu wrote: > > The MMIO region of a device maybe huge (GB level), try to use > > block mapping in stage2 to speedup both map and unmap. > > > > Compared to normal memory mapping, we should

Re: [PATCH v4 2/2] kvm/arm64: Try stage2 block mapping for host device MMIO

Hi Marc, On 2021/4/15 22:03, Keqian Zhu wrote: > The MMIO region of a device maybe huge (GB level), try to use > block mapping in stage2 to speedup both map and unmap. > > Compared to normal memory mapping, we should consider two more > points when try block mapping for MMIO region: > > 1. For

[PATCH v4 2/2] kvm/arm64: Try stage2 block mapping for host device MMIO

The MMIO region of a device maybe huge (GB level), try to use block mapping in stage2 to speedup both map and unmap. Compared to normal memory mapping, we should consider two more points when try block mapping for MMIO region: 1. For normal memory mapping, the PA(host physical address) and HVA