On Wed, Aug 20, 2025, Ashish Kalra wrote: > From: Ashish Kalra <ashish.kalra@xxxxxxx> > > Ciphertext hiding prevents host accesses from reading the ciphertext of > SNP guest private memory. Instead of reading ciphertext, the host reads > will see constant default values (0xff). > > The SEV ASID space is split into SEV and SEV-ES/SEV-SNP ASID ranges. > Enabling ciphertext hiding further splits the SEV-ES/SEV-SNP ASID space > into separate ASID ranges for SEV-ES and SEV-SNP guests. > > Add new module parameter to the KVM module to enable ciphertext hiding > support and a user configurable system-wide maximum SNP ASID value. If > the module parameter value is '-1' then the complete SEV-ES/SEV-SNP > ASID space is allocated to SEV-SNP guests. > > Suggested-by: Sean Christopherson <seanjc@xxxxxxxxxx> > Signed-off-by: Ashish Kalra <ashish.kalra@xxxxxxx> > --- *sigh* Give people a chance to follow-up to the existing conversation before spamming a new version. Sending new versions as quickly as possible doesn't help your code land faster, it just makes people grumpy. I'm ignoring this and responding to v7.
