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