On 2015-04-20 19:33, Radim Krčmář wrote: > 2015-04-20 19:21+0200, Jan Kiszka: >> On 2015-04-20 19:16, Radim Krčmář wrote: >>> 2015-04-20 18:14+0200, Radim Krčmář: >>>> Tested-by: Radim Krčmář <rkrcmar@xxxxxxxxxx> >>> >>> Uncached accesses were roughly 20x slower. >>> In case anyone wanted to reproduce, I used this as a kvm-unit-test: >>> >>> --- > | [code] >> >> Great, thanks. Will you push it to the unit tests? Could raise >> motivations to fix the !NPT/EPT case. > > It can't be included in `run_tests.sh`, because we intenionally ignore > PAT for normal RAM on VMX and the test does "fail" ... That ignoring is encoded into the EPT? Hmm... Maybe we can create a ivshmem device and use that as test target. > > I'll think how to make the test use fool-proof first, and also look how > to fix the !NPT/EPT without affecting the case we care about too much. > (And if we can do a similar trick with NPT.) > OK. Jan -- Siemens AG, Corporate Technology, CT RTC ITP SES-DE Corporate Competence Center Embedded Linux -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
