[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-3.1-testing] xen vtpm: Initialize the comms ring with zeroes.
# HG changeset patch # User Keir Fraser <keir.fraser@xxxxxxxxxx> # Date 1199964483 0 # Node ID 0f30524c7408eb05446943279db61052695b1766 # Parent 023e7a1d43fafc8d2c1bcef814892e2b6941ccea xen vtpm: Initialize the comms ring with zeroes. Initialize the ring with zeroes on the backend side and on the frontend set the 'unused' member to zeroes. Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxx> linux-2.6.18-xen changeset: 374:fedc10fba9f1d5ec0c72dbcbca87e508222b4c48 linux-2.6.18-xen date: Tue Jan 08 09:55:29 2008 +0000 --- linux-2.6-xen-sparse/drivers/char/tpm/tpm_xen.c | 1 + linux-2.6-xen-sparse/drivers/xen/tpmback/interface.c | 1 + 2 files changed, 2 insertions(+) diff -r 023e7a1d43fa -r 0f30524c7408 linux-2.6-xen-sparse/drivers/char/tpm/tpm_xen.c --- a/linux-2.6-xen-sparse/drivers/char/tpm/tpm_xen.c Fri Dec 28 16:00:43 2007 +0000 +++ b/linux-2.6-xen-sparse/drivers/char/tpm/tpm_xen.c Thu Jan 10 11:28:03 2008 +0000 @@ -618,6 +618,7 @@ static int tpm_xmit(struct tpm_private * tx = &tp->tx->ring[i].req; tx->addr = virt_to_machine(txb->data); tx->size = txb->len; + tx->unused = 0; DPRINTK("First 4 characters sent by TPM-FE are " "0x%02x 0x%02x 0x%02x 0x%02x\n", diff -r 023e7a1d43fa -r 0f30524c7408 linux-2.6-xen-sparse/drivers/xen/tpmback/interface.c --- a/linux-2.6-xen-sparse/drivers/xen/tpmback/interface.c Fri Dec 28 16:00:43 2007 +0000 +++ b/linux-2.6-xen-sparse/drivers/xen/tpmback/interface.c Thu Jan 10 11:28:03 2008 +0000 @@ -126,6 +126,7 @@ int tpmif_map(tpmif_t *tpmif, unsigned l } tpmif->tx = (tpmif_tx_interface_t *)tpmif->tx_area->addr; + memset(tpmif->tx, 0, PAGE_SIZE); err = bind_interdomain_evtchn_to_irqhandler( tpmif->domid, evtchn, tpmif_be_int, 0, tpmif->devname, tpmif); _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-changelog
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