Re: [RFC PATCH v3 0/6] Restricted DMA

2021-02-08 Thread Claire Chang
v4 here: https://lore.kernel.org/patchwork/cover/1378113/

Re: [RFC PATCH v3 0/6] Restricted DMA

2021-01-12 Thread Tomasz Figa
On Wed, Jan 13, 2021 at 12:56 PM Florian Fainelli wrote: > > > > On 1/12/2021 6:29 PM, Tomasz Figa wrote: > > Hi Florian, > > > > On Wed, Jan 13, 2021 at 3:01 AM Florian Fainelli > > wrote: > >> > >> On 1/11/21 11:48 PM, Claire Chang wrote: > >>> On Fri, Jan 8, 2021 at 1:59 AM Florian Fainelli

Re: [RFC PATCH v3 0/6] Restricted DMA

2021-01-12 Thread Tomasz Figa
Hi Florian, On Wed, Jan 13, 2021 at 3:01 AM Florian Fainelli wrote: > > On 1/11/21 11:48 PM, Claire Chang wrote: > > On Fri, Jan 8, 2021 at 1:59 AM Florian Fainelli > > wrote: > >> > >> On 1/7/21 9:42 AM, Claire Chang wrote: > >> > Can you explain how ATF gets involved and to what extent i

Re: [RFC PATCH v3 0/6] Restricted DMA

2021-01-12 Thread Florian Fainelli
On 1/12/2021 8:25 PM, Tomasz Figa wrote: > On Wed, Jan 13, 2021 at 12:56 PM Florian Fainelli > wrote: >> >> >> >> On 1/12/2021 6:29 PM, Tomasz Figa wrote: >>> Hi Florian, >>> >>> On Wed, Jan 13, 2021 at 3:01 AM Florian Fainelli >>> wrote: On 1/11/21 11:48 PM, Claire Chang wrote: >>

Re: [RFC PATCH v3 0/6] Restricted DMA

2021-01-12 Thread Florian Fainelli
On 1/12/2021 6:29 PM, Tomasz Figa wrote: > Hi Florian, > > On Wed, Jan 13, 2021 at 3:01 AM Florian Fainelli wrote: >> >> On 1/11/21 11:48 PM, Claire Chang wrote: >>> On Fri, Jan 8, 2021 at 1:59 AM Florian Fainelli >>> wrote: On 1/7/21 9:42 AM, Claire Chang wrote: >> Can yo

Re: [RFC PATCH v3 0/6] Restricted DMA

2021-01-12 Thread Florian Fainelli
On 1/11/21 11:48 PM, Claire Chang wrote: > On Fri, Jan 8, 2021 at 1:59 AM Florian Fainelli wrote: >> >> On 1/7/21 9:42 AM, Claire Chang wrote: >> Can you explain how ATF gets involved and to what extent it does help, besides enforcing a secure region from the ARM CPU's perpsective? Does

Re: [RFC PATCH v3 0/6] Restricted DMA

2021-01-11 Thread Claire Chang
On Fri, Jan 8, 2021 at 1:59 AM Florian Fainelli wrote: > > On 1/7/21 9:42 AM, Claire Chang wrote: > > >> Can you explain how ATF gets involved and to what extent it does help, > >> besides enforcing a secure region from the ARM CPU's perpsective? Does > >> the PCIe root complex not have an IOMMU b

Re: [RFC PATCH v3 0/6] Restricted DMA

2021-01-07 Thread Florian Fainelli
On 1/7/21 9:42 AM, Claire Chang wrote: >> Can you explain how ATF gets involved and to what extent it does help, >> besides enforcing a secure region from the ARM CPU's perpsective? Does >> the PCIe root complex not have an IOMMU but can somehow be denied access >> to a region that is marked NS=0

Re: [RFC PATCH v3 0/6] Restricted DMA

2021-01-07 Thread Claire Chang
On Thu, Jan 7, 2021 at 2:48 AM Florian Fainelli wrote: > > Hi, > > First of all let me say that I am glad that someone is working on a > upstream solution for this issue, would appreciate if you could CC and > Jim Quinlan on subsequent submissions. Sure! > > On 1/5/21 7:41 PM, Claire Chang wrote

Re: [RFC PATCH v3 0/6] Restricted DMA

2021-01-07 Thread Claire Chang
On Thu, Jan 7, 2021 at 2:48 AM Florian Fainelli wrote: > > Hi, > > First of all let me say that I am glad that someone is working on a > upstream solution for this issue, would appreciate if you could CC and > Jim Quinlan on subsequent submissions. Sure! > > > On 1/5/21 7:41 PM, Claire Chang wro

Re: [RFC PATCH v3 0/6] Restricted DMA

2021-01-06 Thread Florian Fainelli
Hi, First of all let me say that I am glad that someone is working on a upstream solution for this issue, would appreciate if you could CC and Jim Quinlan on subsequent submissions. On 1/5/21 7:41 PM, Claire Chang wrote: > This series implements mitigations for lack of DMA access control on > sys