On Wed, 20 Sep 2017 17:30:13 +0200 David Hildenbrand <da...@redhat.com> wrote:
> Some leftover from "target/s390x: tcg improvments + MSA functions". > > Implement all basic MSA (cpacf/crypto) instructions <= z13. Only provide > the query subfunction (to query available subfunctions), no actual > de/encryption yet. Good enough to unlock the STFL bits. > > I have written kvm-unit-tests for MSA functions and for SPM/IPM. Will > send them out soon. I use the following cpu model to test with an upstream > kernel compiled for z10: > > ... -cpu qemu,mvcos=on,stfle=on,ldisp=on,ldisphp=on,\ > eimm=on,stckf=on,csst=on,csst2=on,ginste=on,\ > exrl=on,msa-base=on,msa3-base=on,msa4-base=on,msa5-base=on ... > > Available on: https://github.com/davidhildenbrand/qemu.git s390x-msa I used the following cpu model: -cpu qemu,eimm=on,ldisp=on,stckf=on,msa-base=on,msa3-base=on,msa4-base=on,msa5-base=on and got qemu-system-s390x: warning: 'msa5-base' requires 'kimd-sha-512'. qemu-system-s390x: warning: 'msa5-base' requires 'klmd-sha-512'. (It works anyway.) However, -cpu qemu,eimm=on,ldisp=on,stckf=on,msa-base=on,msa3-base=on,msa4-base=on,msa5-base=on,kimd-sha-512=on gives qemu-system-s390x: can't apply global qemu-s390-cpu.kimd-sha-512=on: Feature 'kimd-sha-512' is not available for CPU model 'z900', it was introduced with later models. which is a bit confusing. So I'm wondering whether providing msa5-base without the providing the algorithms above is sane - or whether it is just enough to satisfy some kernels. [Double-checking the various dependencies looks impossible without access to IBM doc, anyway - I just hope you got it right back then :)]
