On 10/22/24 9:06 PM, Catalin Marinas wrote:
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.
Catalin, The series looks good to me and I don't have more comments. Thanks, Gavin
