Re: [PATCHv4] kvmppc: Implement H_LOGICAL_CI_{LOAD,STORE} in KVM

2015-04-21 Thread Alexander Graf
On 04/21/2015 02:41 AM, David Gibson wrote: On POWER, storage caching is usually configured via the MMU - attributes such as cache-inhibited are stored in the TLB and the hashed page table. This makes correctly performing cache inhibited IO accesses awkward when the MMU is turned off (real mode)

Re: [PATCHv4] kvmppc: Implement H_LOGICAL_CI_{LOAD,STORE} in KVM

2015-04-21 Thread Thomas Huth
Am Tue, 21 Apr 2015 16:51:21 +1000 schrieb David Gibson : > On Tue, Apr 21, 2015 at 08:37:02AM +0200, Thomas Huth wrote: > > Am Tue, 21 Apr 2015 10:41:51 +1000 > > schrieb David Gibson : > > > > > On POWER, storage caching is usually configured via the MMU - attributes > > > such as cache-inhibit

Re: [PATCHv4] kvmppc: Implement H_LOGICAL_CI_{LOAD,STORE} in KVM

2015-04-21 Thread David Gibson
On Tue, Apr 21, 2015 at 08:37:02AM +0200, Thomas Huth wrote: > Am Tue, 21 Apr 2015 10:41:51 +1000 > schrieb David Gibson : > > > On POWER, storage caching is usually configured via the MMU - attributes > > such as cache-inhibited are stored in the TLB and the hashed page table. > > > > This makes

Re: [PATCHv4] kvmppc: Implement H_LOGICAL_CI_{LOAD,STORE} in KVM

2015-04-20 Thread Thomas Huth
Am Tue, 21 Apr 2015 10:41:51 +1000 schrieb David Gibson : > On POWER, storage caching is usually configured via the MMU - attributes > such as cache-inhibited are stored in the TLB and the hashed page table. > > This makes correctly performing cache inhibited IO accesses awkward when > the MMU is