search for: imbrenda

...ned long addr, int numpages) > +{ > + int i; > + > + /* make all pages shared, (swiotlb, dma_free) */ this is a copypaste typo, I think? (should be UNshared?) also, it doesn't make ALL pages unshared, but only those specified in the parameters with this fixed: Reviewed-by: Claudio Imbrenda <imbrenda at linux.ibm.com> > + for (i = 0; i < numpages; ++i) { > + uv_remove_shared(addr); > + addr += PAGE_SIZE; > + } > + return 0; > +} > +EXPORT_SYMBOL_GPL(set_memory_encrypted); > + > +int set_memory_decrypted(unsigned long addr, int numpages) > +{ &...

...ned long addr, int numpages) > +{ > + int i; > + > + /* make all pages shared, (swiotlb, dma_free) */ this is a copypaste typo, I think? (should be UNshared?) also, it doesn't make ALL pages unshared, but only those specified in the parameters with this fixed: Reviewed-by: Claudio Imbrenda <imbrenda at linux.ibm.com> > + for (i = 0; i < numpages; ++i) { > + uv_remove_shared(addr); > + addr += PAGE_SIZE; > + } > + return 0; > +} > +EXPORT_SYMBOL_GPL(set_memory_encrypted); > + > +int set_memory_decrypted(unsigned long addr, int numpages) > +{ &...

On Wed, 8 May 2019 15:15:40 +0200 Claudio Imbrenda <imbrenda at linux.ibm.com> wrote: > On Fri, 26 Apr 2019 20:32:39 +0200 > Halil Pasic <pasic at linux.ibm.com> wrote: > > > On s390, protected virtualization guests have to use bounced I/O > > buffers. That requires some plumbing. > > > > Let us make...

...ounced I/O buffers. That requires some plumbing. Let us make sure, any device that uses DMA API with direct ops correctly is spared from the problems, that a hypervisor attempting I/O to a non-shared page would bring. Signed-off-by: Halil Pasic <pasic at linux.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda at linux.ibm.com> --- arch/s390/Kconfig | 4 +++ arch/s390/include/asm/mem_encrypt.h | 18 +++++++++++ arch/s390/mm/init.c | 47 +++++++++++++++++++++++++++++ 3 files changed, 69 insertions(+) create mode 100644 arch/s390/include/asm/mem_encrypt....

...ounced I/O buffers. That requires some plumbing. Let us make sure, any device that uses DMA API with direct ops correctly is spared from the problems, that a hypervisor attempting I/O to a non-shared page would bring. Signed-off-by: Halil Pasic <pasic at linux.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda at linux.ibm.com> --- arch/s390/Kconfig | 4 +++ arch/s390/include/asm/mem_encrypt.h | 18 +++++++++++ arch/s390/mm/init.c | 47 +++++++++++++++++++++++++++++ 3 files changed, 69 insertions(+) create mode 100644 arch/s390/include/asm/mem_encrypt....

...ounced I/O buffers. That requires some plumbing. Let us make sure, any device that uses DMA API with direct ops correctly is spared from the problems, that a hypervisor attempting I/O to a non-shared page would bring. Signed-off-by: Halil Pasic <pasic at linux.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda at linux.ibm.com> --- arch/s390/Kconfig | 4 ++++ arch/s390/include/asm/mem_encrypt.h | 18 ++++++++++++++ arch/s390/mm/init.c | 47 +++++++++++++++++++++++++++++++++++++ 3 files changed, 69 insertions(+) create mode 100644 arch/s390/include/asm/...

...ounced I/O buffers. That requires some plumbing. Let us make sure, any device that uses DMA API with direct ops correctly is spared from the problems, that a hypervisor attempting I/O to a non-shared page would bring. Signed-off-by: Halil Pasic <pasic at linux.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda at linux.ibm.com> Signed-off-by: Michael Mueller <mimu at linux.ibm.com> --- arch/s390/Kconfig | 4 ++++ arch/s390/include/asm/mem_encrypt.h | 18 ++++++++++++++ arch/s390/mm/init.c | 47 +++++++++++++++++++++++++++++++++++++ 3 files changed...

On Fri, Apr 08, 2016 at 04:35:05PM +0100, Ian Campbell wrote: > On Fri, 2016-04-01 at 15:23 +0100, Stefan Hajnoczi wrote: > > This series is based on Michael Tsirkin's vhost branch (v4.5-rc6). > > > > I'm about to process Claudio Imbrenda's locking fixes for virtio-vsock but > > first I want to share the latest version of the code.??Several people are > > playing with vsock now so sharing the latest code should avoid duplicate work. > > Thanks for this, I've been using it in my project and it mostly seems...

On Fri, Apr 08, 2016 at 04:35:05PM +0100, Ian Campbell wrote: > On Fri, 2016-04-01 at 15:23 +0100, Stefan Hajnoczi wrote: > > This series is based on Michael Tsirkin's vhost branch (v4.5-rc6). > > > > I'm about to process Claudio Imbrenda's locking fixes for virtio-vsock but > > first I want to share the latest version of the code.??Several people are > > playing with vsock now so sharing the latest code should avoid duplicate work. > > Thanks for this, I've been using it in my project and it mostly seems...

...<hch at infradead.org>, Thomas Huth > <thuth at redhat.com>, Christian Borntraeger <borntraeger at de.ibm.com>, Viktor Mihajlovski > <mihajlov at linux.ibm.com>, Vasily Gorbik <gor at linux.ibm.com>, Janosch Frank > <frankja at linux.ibm.com>, Claudio Imbrenda <imbrenda at linux.ibm.com>, Farhan Ali > <alifm at linux.ibm.com>, Eric Farman <farman at linux.ibm.com> > > On s390, protected virtualization guests have to use bounced I/O > buffers.? That requires some plumbing. > > Let us make sure, any device that uses D...

On Fri, 2016-04-01 at 15:23 +0100, Stefan Hajnoczi wrote: > This series is based on Michael Tsirkin's vhost branch (v4.5-rc6). > > I'm about to process Claudio Imbrenda's locking fixes for virtio-vsock but > first I want to share the latest version of the code.??Several people are > playing with vsock now so sharing the latest code should avoid duplicate work. Thanks for this, I've been using it in my project and it mostly seems fine. One wrinkle I...

...ajnoczi wrote: > On Fri, Apr 08, 2016 at 04:35:05PM +0100, Ian Campbell wrote: > > On Fri, 2016-04-01 at 15:23 +0100, Stefan Hajnoczi wrote: > > > This series is based on Michael Tsirkin's vhost branch (v4.5-rc6). > > > > > > I'm about to process Claudio Imbrenda's locking fixes for virtio-vsock but > > > first I want to share the latest version of the code.??Several people are > > > playing with vsock now so sharing the latest code should avoid duplicate work. > > > > Thanks for this, I've been using it in my project...

...On Fri, Apr 08, 2016 at 04:35:05PM +0100, Ian Campbell wrote: > > > On Fri, 2016-04-01 at 15:23 +0100, Stefan Hajnoczi wrote: > > > > This series is based on Michael Tsirkin's vhost branch (v4.5-rc6). > > > > > > > > I'm about to process Claudio Imbrenda's locking fixes for virtio-vsock but > > > > first I want to share the latest version of the code.??Several people are > > > > playing with vsock now so sharing the latest code should avoid duplicate work. > > > > > > Thanks for this, I've been usi...

...On Fri, Apr 08, 2016 at 04:35:05PM +0100, Ian Campbell wrote: > > > On Fri, 2016-04-01 at 15:23 +0100, Stefan Hajnoczi wrote: > > > > This series is based on Michael Tsirkin's vhost branch (v4.5-rc6). > > > > > > > > I'm about to process Claudio Imbrenda's locking fixes for virtio-vsock but > > > > first I want to share the latest version of the code.??Several people are > > > > playing with vsock now so sharing the latest code should avoid duplicate work. > > > > > > Thanks for this, I've been usi...

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

This series is based on Michael Tsirkin's vhost branch (v4.5-rc6). I'm about to process Claudio Imbrenda's locking fixes for virtio-vsock but first I want to share the latest version of the code. Several people are playing with vsock now so sharing the latest code should avoid duplicate work. v5: * Transport reset event for live migration support * Reorder virtqueues, drop unused ctrl virtqueu...

This series is based on Michael Tsirkin's vhost branch (v4.5-rc6). I'm about to process Claudio Imbrenda's locking fixes for virtio-vsock but first I want to share the latest version of the code. Several people are playing with vsock now so sharing the latest code should avoid duplicate work. v5: * Transport reset event for live migration support * Reorder virtqueues, drop unused ctrl virtqueu...

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV