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) == KVM: SVM: free sev_*asid_bitmap init if SEV init fails If misc_cg_set_capacity() fails for some reason then we have a memleak for sev_reclaim_asid_bitmap/sev_asid_bitmap. It's not a case right now, because misc_cg_set_capacity() just can't fail and check inside it is always successful. But let's fix that for code consistency. Cc: Sean Christopherson <seanjc@xxxxxxxxxx> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> Cc: Stéphane Graber <stgraber@xxxxxxxxxx> Cc: kvm@xxxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@xxxxxxxxxxxxx> Alexander Mikhalitsyn (2): KVM: SVM: free sev_*asid_bitmap init if SEV init fails KVM: SVM: enhance info printk's in SEV init arch/x86/kvm/svm/sev.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) -- 2.34.1
