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| author |   Jarkko Sakkinen <jarkko@profian.com> | 2022-08-10 01:49:15 +0300 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2022-08-19 18:39:36 +0800 |
| commit | b3b9fdf1a9be4266b01a2063b1f37cdc20806e3b (patch) | |
| tree | dd62b9d5ea3e186cc3ef739102b2089b5f0574ff /crypto/api.c | |
| parent | crypto: keembay-ocs - Drop obsolete dependency on COMPILE_TEST (diff) | |
| download | linux-rng-b3b9fdf1a9be4266b01a2063b1f37cdc20806e3b.tar.xz linux-rng-b3b9fdf1a9be4266b01a2063b1f37cdc20806e3b.zip | |
crypto: ccp - Add a quirk to firmware update
A quirk for fixing the committed TCB version, when upgrading from a
firmware version earlier than 1.50. This is a known issue, and the
documented workaround is to load the firmware twice.
Currently, this issue requires the following workaround:
sudo modprobe -r kvm_amd
sudo modprobe -r ccp
sudo modprobe ccp
sudo modprobe kvm_amd
Implement this workaround inside kernel by checking whether the API
version is less than 1.50, and if so, download the firmware twice.
This addresses the TCB version issue.
Link: https://lore.kernel.org/all/de02389f-249d-f565-1136-4af3655fab2a@profian.com/
Reported-by: Harald Hoyer <harald@profian.com>
Signed-off-by: Jarkko Sakkinen <jarkko@profian.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/api.c')
0 files changed, 0 insertions, 0 deletions