Re: [Xen-devel] [PATCH V2] iommu/arm: Don't allow the same micro-TLB to be shared between domains

2020-02-24 Thread Yoshihiro Shimoda
Hi Oleksandr-san, > From: Oleksandr Tyshchenko, Sent: Tuesday, February 18, 2020 12:06 AM > > For the IPMMU-VMSA we need to prevent the use cases where devices > which use the same micro-TLB are assigned to different Xen domains > (micro-TLB cannot be shared between multiple Xen domains, since

Re: [Xen-devel] [PATCH V2] iommu/arm: Don't allow the same micro-TLB to be shared between domains

2020-02-24 Thread Julien Grall
Hi Oleksandr, On 17/02/2020 15:05, Oleksandr Tyshchenko wrote: From: Oleksandr Tyshchenko For the IPMMU-VMSA we need to prevent the use cases where devices which use the same micro-TLB are assigned to different Xen domains (micro-TLB cannot be shared between multiple Xen domains, since it

Re: [Xen-devel] [PATCH V2] iommu/arm: Don't allow the same micro-TLB to be shared between domains

2020-02-19 Thread Volodymyr Babchuk
Hello Oleksandr, Oleksandr Tyshchenko writes: > From: Oleksandr Tyshchenko > > For the IPMMU-VMSA we need to prevent the use cases where devices > which use the same micro-TLB are assigned to different Xen domains > (micro-TLB cannot be shared between multiple Xen domains, since it > points to

[Xen-devel] [PATCH V2] iommu/arm: Don't allow the same micro-TLB to be shared between domains

2020-02-17 Thread Oleksandr Tyshchenko
From: Oleksandr Tyshchenko For the IPMMU-VMSA we need to prevent the use cases where devices which use the same micro-TLB are assigned to different Xen domains (micro-TLB cannot be shared between multiple Xen domains, since it points to the context bank to use for the page walk). As each Xen