On 12/9/24 17:25, Ashish Kalra wrote: > From: Ashish Kalra <ashish.kalra@xxxxxxx> > > When SEV-SNP is enabled the TMR needs to be 2MB aligned and 2MB sized, > ensure that TMR size is reset back to default when SNP is shutdown. I think a bit more info here about why this is (now) needed would be good. Thanks, Tom > > Signed-off-by: Ashish Kalra <ashish.kalra@xxxxxxx> > --- > drivers/crypto/ccp/sev-dev.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c > index d8673d8836f1..bc121ad9ec26 100644 > --- a/drivers/crypto/ccp/sev-dev.c > +++ b/drivers/crypto/ccp/sev-dev.c > @@ -1750,6 +1750,9 @@ static int __sev_snp_shutdown_locked(int *error, bool panic) > sev->snp_initialized = false; > dev_dbg(sev->dev, "SEV-SNP firmware shutdown\n"); > > + /* Reset TMR size back to default */ > + sev_es_tmr_size = SEV_TMR_SIZE; > + > return ret; > } >
