RE: [PATCH v3 14/17] intel_iommu: Set default aw_bits to 48 in scalable modern mode

2024-09-28 Thread Duan, Zhenzhong
>-Original Message- >From: Jason Wang >Subject: Re: [PATCH v3 14/17] intel_iommu: Set default aw_bits to 48 in >scalable modern mode > >On Fri, Sep 27, 2024 at 2:39 PM Duan, Zhenzhong > wrote: >> >> >> >> >-Original Message----- >&g

Re: [PATCH v3 14/17] intel_iommu: Set default aw_bits to 48 in scalable modern mode

2024-09-28 Thread Jason Wang
On Fri, Sep 27, 2024 at 2:39 PM Duan, Zhenzhong wrote: > > > > >-Original Message- > >From: Jason Wang > >Subject: Re: [PATCH v3 14/17] intel_iommu: Set default aw_bits to 48 in > >scalable modern mode > > > >On Wed, Sep 11, 2024 at 1:27 PM

RE: [PATCH v3 14/17] intel_iommu: Set default aw_bits to 48 in scalable modern mode

2024-09-26 Thread Duan, Zhenzhong
>-Original Message- >From: Jason Wang >Subject: Re: [PATCH v3 14/17] intel_iommu: Set default aw_bits to 48 in >scalable modern mode > >On Wed, Sep 11, 2024 at 1:27 PM Zhenzhong Duan > wrote: >> >> According to VTD spec, stage-1 page table could supp

Re: [PATCH v3 14/17] intel_iommu: Set default aw_bits to 48 in scalable modern mode

2024-09-26 Thread Jason Wang
On Wed, Sep 11, 2024 at 1:27 PM Zhenzhong Duan wrote: > > According to VTD spec, stage-1 page table could support 4-level and > 5-level paging. > > However, 5-level paging translation emulation is unsupported yet. > That means the only supported value for aw_bits is 48. > > So default aw_bits to 4