Re: [RFC/RFT PATCH 0/3] arm64: KVM: work around incoherency with uncached guest mappings

2015-02-20 Thread Andrew Jones
On Thu, Feb 19, 2015 at 06:57:24PM +0100, Paolo Bonzini wrote: On 19/02/2015 18:55, Andrew Jones wrote: (I don't have an exact number for how many times it went to EL1 because access_mair() doesn't have a trace point.) (I got the 62873 number by testing a 3rd kernel build that

Re: [RFC/RFT PATCH 0/3] arm64: KVM: work around incoherency with uncached guest mappings

2015-02-20 Thread Ard Biesheuvel
On 20 February 2015 at 14:29, Andrew Jones drjo...@redhat.com wrote: On Thu, Feb 19, 2015 at 06:57:24PM +0100, Paolo Bonzini wrote: On 19/02/2015 18:55, Andrew Jones wrote: (I don't have an exact number for how many times it went to EL1 because access_mair() doesn't have a trace

Re: [RFC/RFT PATCH 0/3] arm64: KVM: work around incoherency with uncached guest mappings

2015-02-20 Thread Andrew Jones
On Fri, Feb 20, 2015 at 02:37:25PM +, Ard Biesheuvel wrote: On 20 February 2015 at 14:29, Andrew Jones drjo...@redhat.com wrote: So looks like the 3 orders of magnitude greater number of traps (only to el2) don't impact kernel compiles. OK, good! That was what I was hoping for,