Le 03/04/2021 à 01:36, Sean Christopherson a écrit :
WARN on and reject SEV commands that provide a valid data pointer, but do
not have a known, non-zero length. And conversely, reject commands that
take a command buffer but none is provided.
Aside from sanity checking intput, disallowing a
Le 03/04/2021 à 01:37, Sean Christopherson a écrit :
Copy vmalloc'd data to an internal buffer instead of rejecting outright
so that callers can put SEV command buffers on the stack without running
afoul of CONFIG_VMAP_STACK=y. Currently, the largest supported command
takes a 68 byte buffer,
Le 03/04/2021 à 01:37, Sean Christopherson a écrit :
Copy vmalloc'd data to an internal buffer instead of rejecting outright
so that callers can put SEV command buffers on the stack without running
afoul of CONFIG_VMAP_STACK=y. Currently, the largest supported command
takes a 68 byte buffer,
Le 03/04/2021 à 01:36, Sean Christopherson a écrit :
Explicitly reject vmalloc'd data as the source for SEV commands that are
sent to the PSP. The PSP works with physical addresses, and __pa() will
not return the correct address for a vmalloc'd pionter, which at best
will cause the command to
Le 03/04/2021 à 01:37, Sean Christopherson a écrit :
Copy vmalloc'd data to an internal buffer instead of rejecting outright
so that callers can put SEV command buffers on the stack without running
afoul of CONFIG_VMAP_STACK=y. Currently, the largest supported command
takes a 68 byte buffer,
