Re: How to disable IDE DMA in KVM or in guest OS

2014-05-14 Thread Jan Kiszka
On 2014-05-15 08:55, Arthur Chunqi Li wrote: > On Thu, May 15, 2014 at 2:39 PM, Jan Kiszka wrote: >> On 2014-05-15 07:54, Arthur Chunqi Li wrote: >>> Hi Jan and there, >>> >>> I want to disable IDE BMDMA in Qemu/KVM and let guest OS uses only PIO >>> mode. Are there any configurations in Qemu or K

Re: How to disable IDE DMA in KVM or in guest OS

2014-05-14 Thread Arthur Chunqi Li
On Thu, May 15, 2014 at 2:39 PM, Jan Kiszka wrote: > On 2014-05-15 07:54, Arthur Chunqi Li wrote: >> Hi Jan and there, >> >> I want to disable IDE BMDMA in Qemu/KVM and let guest OS uses only PIO >> mode. Are there any configurations in Qemu or KVM to disable the >> hardware support of DMA? > > No

Re: How to disable IDE DMA in KVM or in guest OS

2014-05-14 Thread Jan Kiszka
On 2014-05-15 07:54, Arthur Chunqi Li wrote: > Hi Jan and there, > > I want to disable IDE BMDMA in Qemu/KVM and let guest OS uses only PIO > mode. Are there any configurations in Qemu or KVM to disable the > hardware support of DMA? Not that I know. These features are built into the chipsets we

How to disable IDE DMA in KVM or in guest OS

2014-05-14 Thread Arthur Chunqi Li
Hi Jan and there, I want to disable IDE BMDMA in Qemu/KVM and let guest OS uses only PIO mode. Are there any configurations in Qemu or KVM to disable the hardware support of DMA? I have tried to disable IDE DMA in guest OS booting params as follows: ide-core.nodma=0.0 libata.dma=0 ide=nodma ide0=