Re: [Xen-devel] [PATCH 1/2] xen/swiotlb: If iommu=soft was not passed in on > 4GB, don't turn it on.

2012-07-30 Thread Konrad Rzeszutek Wilk
On Mon, Jul 30, 2012 at 03:58:02PM +0100, Stefano Stabellini wrote: > On Fri, 27 Jul 2012, Konrad Rzeszutek Wilk wrote: > > On Fri, Jul 27, 2012 at 12:06:27PM +0100, Stefano Stabellini wrote: > > > On Thu, 26 Jul 2012, Konrad Rzeszutek Wilk wrote: > > > > If we boot a 64-bit guest with more than 4G

Re: [Xen-devel] [PATCH 1/2] xen/swiotlb: If iommu=soft was not passed in on > 4GB, don't turn it on.

2012-07-30 Thread Stefano Stabellini
On Fri, 27 Jul 2012, Konrad Rzeszutek Wilk wrote: > On Fri, Jul 27, 2012 at 12:06:27PM +0100, Stefano Stabellini wrote: > > On Thu, 26 Jul 2012, Konrad Rzeszutek Wilk wrote: > > > If we boot a 64-bit guest with more than 4GB memory, the SWIOTLB > > > gets turned on: > > > PCI-DMA: Using software bo

Re: [Xen-devel] [PATCH 1/2] xen/swiotlb: If iommu=soft was not passed in on > 4GB, don't turn it on.

2012-07-30 Thread Jan Beulich
>>> On 27.07.12 at 19:54, Konrad Rzeszutek Wilk wrote: > On Fri, Jul 27, 2012 at 08:27:39AM +0100, Jan Beulich wrote: >> >>> On 26.07.12 at 22:43, Konrad Rzeszutek Wilk >> >>> wrote: >> > + /* Check if the user supplied the e820_hole parameter >> > + * which would create a machine looking E82

Re: [Xen-devel] [PATCH 1/2] xen/swiotlb: If iommu=soft was not passed in on > 4GB, don't turn it on.

2012-07-27 Thread Konrad Rzeszutek Wilk
On Fri, Jul 27, 2012 at 12:06:27PM +0100, Stefano Stabellini wrote: > On Thu, 26 Jul 2012, Konrad Rzeszutek Wilk wrote: > > If we boot a 64-bit guest with more than 4GB memory, the SWIOTLB > > gets turned on: > > PCI-DMA: Using software bounce buffering for IO (SWIOTLB) > > software IO TLB [mem 0xf

Re: [Xen-devel] [PATCH 1/2] xen/swiotlb: If iommu=soft was not passed in on > 4GB, don't turn it on.

2012-07-27 Thread Konrad Rzeszutek Wilk
On Fri, Jul 27, 2012 at 08:27:39AM +0100, Jan Beulich wrote: > >>> On 26.07.12 at 22:43, Konrad Rzeszutek Wilk > >>> wrote: > > If we boot a 64-bit guest with more than 4GB memory, the SWIOTLB > > gets turned on: > > PCI-DMA: Using software bounce buffering for IO (SWIOTLB) > > software IO TLB [m

Re: [Xen-devel] [PATCH 1/2] xen/swiotlb: If iommu=soft was not passed in on > 4GB, don't turn it on.

2012-07-27 Thread Jan Beulich
>>> On 26.07.12 at 22:43, Konrad Rzeszutek Wilk wrote: > If we boot a 64-bit guest with more than 4GB memory, the SWIOTLB > gets turned on: > PCI-DMA: Using software bounce buffering for IO (SWIOTLB) > software IO TLB [mem 0xfb43d000-0xff43cfff] (64MB) mapped at > [8800fb43d000-8800ff43cf