similar to: [PATCH 0/2] virtio: Support encrypted memory on powerpc secure guests

Displaying 20 results from an estimated 2000 matches similar to: "[PATCH 0/2] virtio: Support encrypted memory on powerpc secure guests"

2019 Oct 14
3
[PATCH 1/2] dma-mapping: Add dma_addr_is_phys_addr()
On Fri, Oct 11, 2019 at 06:25:18PM -0700, Ram Pai wrote: > From: Thiago Jung Bauermann <bauerman at linux.ibm.com> > > In order to safely use the DMA API, virtio needs to know whether DMA > addresses are in fact physical addresses and for that purpose, > dma_addr_is_phys_addr() is introduced. > > cc: Benjamin Herrenschmidt <benh at kernel.crashing.org> > cc:
2019 Oct 14
3
[PATCH 1/2] dma-mapping: Add dma_addr_is_phys_addr()
On Fri, Oct 11, 2019 at 06:25:18PM -0700, Ram Pai wrote: > From: Thiago Jung Bauermann <bauerman at linux.ibm.com> > > In order to safely use the DMA API, virtio needs to know whether DMA > addresses are in fact physical addresses and for that purpose, > dma_addr_is_phys_addr() is introduced. > > cc: Benjamin Herrenschmidt <benh at kernel.crashing.org> > cc:
2019 Aug 10
3
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
On Tue, Jan 29, 2019 at 03:08:12PM -0200, Thiago Jung Bauermann wrote: > > Hello, > > With Christoph's rework of the DMA API that recently landed, the patch > below is the only change needed in virtio to make it work in a POWER > secure guest under the ultravisor. > > The other change we need (making sure the device's dma_map_ops is NULL > so that the
2019 Aug 10
3
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
On Tue, Jan 29, 2019 at 03:08:12PM -0200, Thiago Jung Bauermann wrote: > > Hello, > > With Christoph's rework of the DMA API that recently landed, the patch > below is the only change needed in virtio to make it work in a POWER > secure guest under the ultravisor. > > The other change we need (making sure the device's dma_map_ops is NULL > so that the
2019 Oct 12
0
[PATCH 1/2] dma-mapping: Add dma_addr_is_phys_addr()
From: Thiago Jung Bauermann <bauerman at linux.ibm.com> In order to safely use the DMA API, virtio needs to know whether DMA addresses are in fact physical addresses and for that purpose, dma_addr_is_phys_addr() is introduced. cc: Benjamin Herrenschmidt <benh at kernel.crashing.org> cc: David Gibson <david at gibson.dropbear.id.au> cc: Michael Ellerman <mpe at
2019 Oct 14
0
[PATCH 1/2] dma-mapping: Add dma_addr_is_phys_addr()
On 14/10/2019 05:51, David Gibson wrote: > On Fri, Oct 11, 2019 at 06:25:18PM -0700, Ram Pai wrote: >> From: Thiago Jung Bauermann <bauerman at linux.ibm.com> >> >> In order to safely use the DMA API, virtio needs to know whether DMA >> addresses are in fact physical addresses and for that purpose, >> dma_addr_is_phys_addr() is introduced. >>
2019 Oct 12
5
[PATCH 2/2] virtio_ring: Use DMA API if memory is encrypted
From: Thiago Jung Bauermann <bauerman at linux.ibm.com> Normally, virtio enables DMA API with VIRTIO_F_IOMMU_PLATFORM, which must be set by both device and guest driver. However, as a hack, when DMA API returns physical addresses, guest driver can use the DMA API; even though device does not set VIRTIO_F_IOMMU_PLATFORM and just uses physical addresses. Doing this works-around POWER secure
2019 Oct 12
5
[PATCH 2/2] virtio_ring: Use DMA API if memory is encrypted
From: Thiago Jung Bauermann <bauerman at linux.ibm.com> Normally, virtio enables DMA API with VIRTIO_F_IOMMU_PLATFORM, which must be set by both device and guest driver. However, as a hack, when DMA API returns physical addresses, guest driver can use the DMA API; even though device does not set VIRTIO_F_IOMMU_PLATFORM and just uses physical addresses. Doing this works-around POWER secure
2019 Jul 14
3
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Michael S. Tsirkin <mst at redhat.com> writes: > On Thu, Jun 27, 2019 at 10:58:40PM -0300, Thiago Jung Bauermann wrote: >> >> Michael S. Tsirkin <mst at redhat.com> writes: >> >> > On Mon, Jun 03, 2019 at 10:13:59PM -0300, Thiago Jung Bauermann wrote: >> >> >> >> >> >> Michael S. Tsirkin <mst at redhat.com>
2019 Jul 14
3
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Michael S. Tsirkin <mst at redhat.com> writes: > On Thu, Jun 27, 2019 at 10:58:40PM -0300, Thiago Jung Bauermann wrote: >> >> Michael S. Tsirkin <mst at redhat.com> writes: >> >> > On Mon, Jun 03, 2019 at 10:13:59PM -0300, Thiago Jung Bauermann wrote: >> >> >> >> >> >> Michael S. Tsirkin <mst at redhat.com>
2019 Jun 28
2
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Michael S. Tsirkin <mst at redhat.com> writes: > On Mon, Jun 03, 2019 at 10:13:59PM -0300, Thiago Jung Bauermann wrote: >> >> >> Michael S. Tsirkin <mst at redhat.com> writes: >> >> > On Wed, Apr 17, 2019 at 06:42:00PM -0300, Thiago Jung Bauermann wrote: >> >> I rephrased it in terms of address translation. What do you think of >>
2019 Jun 28
2
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Michael S. Tsirkin <mst at redhat.com> writes: > On Mon, Jun 03, 2019 at 10:13:59PM -0300, Thiago Jung Bauermann wrote: >> >> >> Michael S. Tsirkin <mst at redhat.com> writes: >> >> > On Wed, Apr 17, 2019 at 06:42:00PM -0300, Thiago Jung Bauermann wrote: >> >> I rephrased it in terms of address translation. What do you think of >>
2019 Feb 04
2
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Hello Michael, Michael S. Tsirkin <mst at redhat.com> writes: > On Tue, Jan 29, 2019 at 03:42:44PM -0200, Thiago Jung Bauermann wrote: >> >> Fixing address of powerpc mailing list. >> >> Thiago Jung Bauermann <bauerman at linux.ibm.com> writes: >> >> > Hello, >> > >> > With Christoph's rework of the DMA API that recently
2019 Feb 04
2
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Hello Michael, Michael S. Tsirkin <mst at redhat.com> writes: > On Tue, Jan 29, 2019 at 03:42:44PM -0200, Thiago Jung Bauermann wrote: >> >> Fixing address of powerpc mailing list. >> >> Thiago Jung Bauermann <bauerman at linux.ibm.com> writes: >> >> > Hello, >> > >> > With Christoph's rework of the DMA API that recently
2019 Mar 22
3
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Michael S. Tsirkin <mst at redhat.com> writes: > On Wed, Mar 20, 2019 at 01:13:41PM -0300, Thiago Jung Bauermann wrote: >> >> Another way of looking at this issue which also explains our reluctance >> >> is that the only difference between a secure guest and a regular guest >> >> (at least regarding virtio) is that the former uses swiotlb while the
2019 Mar 22
3
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Michael S. Tsirkin <mst at redhat.com> writes: > On Wed, Mar 20, 2019 at 01:13:41PM -0300, Thiago Jung Bauermann wrote: >> >> Another way of looking at this issue which also explains our reluctance >> >> is that the only difference between a secure guest and a regular guest >> >> (at least regarding virtio) is that the former uses swiotlb while the
2019 Jun 04
2
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Michael S. Tsirkin <mst at redhat.com> writes: > On Wed, Apr 17, 2019 at 06:42:00PM -0300, Thiago Jung Bauermann wrote: >> I rephrased it in terms of address translation. What do you think of >> this version? The flag name is slightly different too: >> >> >> VIRTIO_F_ACCESS_PLATFORM_NO_TRANSLATION This feature has the same >> meaning as
2019 Jun 04
2
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Michael S. Tsirkin <mst at redhat.com> writes: > On Wed, Apr 17, 2019 at 06:42:00PM -0300, Thiago Jung Bauermann wrote: >> I rephrased it in terms of address translation. What do you think of >> this version? The flag name is slightly different too: >> >> >> VIRTIO_F_ACCESS_PLATFORM_NO_TRANSLATION This feature has the same >> meaning as
2019 Apr 17
4
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Michael S. Tsirkin <mst at redhat.com> writes: > On Thu, Mar 21, 2019 at 09:05:04PM -0300, Thiago Jung Bauermann wrote: >> >> Michael S. Tsirkin <mst at redhat.com> writes: >> >> > On Wed, Mar 20, 2019 at 01:13:41PM -0300, Thiago Jung Bauermann wrote: >> >> >From what I understand of the ACCESS_PLATFORM definition, the host will >>
2019 Apr 17
4
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
Michael S. Tsirkin <mst at redhat.com> writes: > On Thu, Mar 21, 2019 at 09:05:04PM -0300, Thiago Jung Bauermann wrote: >> >> Michael S. Tsirkin <mst at redhat.com> writes: >> >> > On Wed, Mar 20, 2019 at 01:13:41PM -0300, Thiago Jung Bauermann wrote: >> >> >From what I understand of the ACCESS_PLATFORM definition, the host will >>