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| author | Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> | 2023-05-22 18:12:48 +0200 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-06-06 10:41:29 -0700 |
| commit | 6d1bc9754b04075d938b47cf7f7800814b8911a7 (patch) | |
| tree | 3b3d9297a4d92de6373498c8aabd0fe186f50c84 /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | 791a089861fced01dc6d8a67507d711839659fb8 (diff) | |
KVM: SVM: enhance info printk's in SEV init
Let's print available ASID ranges for SEV/SEV-ES guests.
This information can be useful for system administrator
to debug if SEV/SEV-ES fails to enable.
There are a few reasons.
SEV:
- NPT is disabled (module parameter)
- CPU lacks some features (sev, decodeassists)
- Maximum SEV ASID is 0
SEV-ES:
- mmio_caching is disabled (module parameter)
- CPU lacks sev_es feature
- Minimum SEV ASID value is 1 (can be adjusted in BIOS/UEFI)
Cc: Sean Christopherson <seanjc@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Stéphane Graber <stgraber@ubuntu.com>
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Link: https://lore.kernel.org/r/20230522161249.800829-3-aleksandr.mikhalitsyn@canonical.com
[sean: print '0' for min SEV-ES ASID if there are no available ASIDs]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions