On Thu, Oct 17, 2024 at 02:14:33PM +0100, Steven Price wrote: > From: Sami Mujawar <sami.mujawar@xxxxxxx> > > Introduce an arm-cca-guest driver that registers with > the configfs-tsm module to provide user interfaces for > retrieving an attestation token. > > When a new report is requested the arm-cca-guest driver > invokes the appropriate RSI interfaces to query an > attestation token. > > The steps to retrieve an attestation token are as follows: > 1. Mount the configfs filesystem if not already mounted > mount -t configfs none /sys/kernel/config > 2. Generate an attestation token > report=/sys/kernel/config/tsm/report/report0 > mkdir $report > dd if=/dev/urandom bs=64 count=1 > $report/inblob > hexdump -C $report/outblob > rmdir $report > > Signed-off-by: Sami Mujawar <sami.mujawar@xxxxxxx> > Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx> > Signed-off-by: Steven Price <steven.price@xxxxxxx> > --- > Changes since v6: > * Avoid get_cpu() and instead make the init attestation call using > smp_call_function_single(). Improve comments to explain the logic. > * Minor code reorgnisation and comment cleanup following Gavin's review > (thanks!) Gavin, since most changes in v7 are based on your feedback, do you have any more comments on this patch? I plan to push this series into -next fairly soon. Thanks. -- Catalin
