From: Brijesh Singh <brijesh.singh@amd.com>
To: Borislav Petkov <bp@suse.de>
Cc: brijesh.singh@amd.com, x86@kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Herbert Xu" <herbert@gondor.apana.org.au>,
"Gary Hook" <gary.hook@amd.com>,
"Tom Lendacky" <thomas.lendacky@amd.com>,
linux-crypto@vger.kernel.org
Subject: Re: [Part2 PATCH v5 12/31] crypto: ccp: Add Secure Encrypted Virtualization (SEV) command support
Date: Sat, 7 Oct 2017 13:13:07 -0500 [thread overview]
Message-ID: <97825322-e53b-153f-4208-62b750b9b341@amd.com> (raw)
In-Reply-To: <20171006184951.vq6hlhjanaefizli@pd.tnic>
On 10/6/17 1:49 PM, Borislav Petkov wrote:
...
>> +static int sev_wait_cmd_ioc(struct psp_device *psp, unsigned int *reg)
>> +{
>> + psp->sev_int_rcvd = 0;
>> +
>> + wait_event(psp->sev_int_queue, psp->sev_int_rcvd);
> What happens if the command times out and it never sets psp->sev_int_rcvd?
Sorry i missed replying on this comment. We should not run into cases
where after issuing PSP command we do not get an interrupt. I would
prefer to avoid adding the timeout value. At least so far in all my runs
I have not came across this situation but it can happen ;). The tricky
part is, what should be the default timeout value. Depending on the user
inputs some commands can take long time.
next prev parent reply other threads:[~2017-10-07 18:13 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-04 13:13 [Part2 PATCH v5 00/31] x86: Secure Encrypted Virtualization (AMD) Brijesh Singh
2017-10-04 13:13 ` [Part2 PATCH v5 09/31] crypto: ccp: Build the AMD secure processor driver only with AMD CPU support Brijesh Singh
2017-10-04 21:47 ` Borislav Petkov
2017-10-04 23:06 ` Brijesh Singh
2017-10-04 13:13 ` [Part2 PATCH v5 10/31] crypto: ccp: Add Platform Security Processor (PSP) device support Brijesh Singh
2017-10-05 9:56 ` Borislav Petkov
2017-10-06 23:09 ` [Part2 PATCH v5.1 " Brijesh Singh
2017-10-04 13:13 ` [Part2 PATCH v5 11/31] crypto: ccp: Define SEV key management command id Brijesh Singh
2017-10-05 20:56 ` Borislav Petkov
2017-10-08 21:14 ` Brijesh Singh
2017-10-04 13:13 ` [Part2 PATCH v5 12/31] crypto: ccp: Add Secure Encrypted Virtualization (SEV) command support Brijesh Singh
2017-10-06 18:49 ` Borislav Petkov
2017-10-06 19:48 ` Brijesh Singh
2017-10-07 18:13 ` Brijesh Singh [this message]
2017-10-07 1:05 ` [Part2 PATCH v5.1 12.1/31] " Brijesh Singh
2017-10-07 1:06 ` [Part2 PATCH v5.1 12.2/31] crypto: ccp: Define SEV userspace ioctl and command id Brijesh Singh
2017-10-07 14:20 ` Borislav Petkov
2017-10-08 21:18 ` Brijesh Singh
2017-10-11 16:46 ` [Part2 PATCH v5.2 12.1/31] " Brijesh Singh
2017-10-12 13:27 ` Borislav Petkov
2017-10-12 14:18 ` Brijesh Singh
2017-10-07 1:06 ` [Part2 PATCH v5.1 12.3/31] crypto: ccp: Implement SEV_FACTORY_RESET ioctl command Brijesh Singh
2017-10-11 14:32 ` Borislav Petkov
2017-10-11 16:55 ` [Part2 PATCH v5.2 " Brijesh Singh
2017-10-12 14:13 ` Borislav Petkov
2017-10-07 1:06 ` [Part2 PATCH v5.1 12.4/31] crypto: ccp: Implement SEV_PLATFORM_STATUS " Brijesh Singh
2017-10-11 17:01 ` [Part2 PATCH v5.2 " Brijesh Singh
2017-10-11 17:02 ` [Part2 PATCH v5.1 " Borislav Petkov
2017-10-11 19:49 ` Brijesh Singh
2017-10-11 20:04 ` Borislav Petkov
2017-10-11 20:10 ` Borislav Petkov
2017-10-11 20:10 ` Brijesh Singh
2017-10-11 20:28 ` Borislav Petkov
2017-10-11 20:45 ` Brijesh Singh
2017-10-11 20:53 ` Brijesh Singh
2017-10-11 20:54 ` Borislav Petkov
2017-10-07 1:06 ` [Part2 PATCH v5.1 12.5/31] crypto: ccp: Implement SEV_PEK_GEN " Brijesh Singh
2017-10-12 18:28 ` Borislav Petkov
2017-10-12 20:11 ` Brijesh Singh
2017-10-12 20:21 ` Borislav Petkov
2017-10-12 20:34 ` Brijesh Singh
2017-10-07 1:06 ` [Part2 PATCH v5.1 12.6/31] crypto: ccp: Implement SEV_PDH_GEN " Brijesh Singh
2017-10-12 18:48 ` Borislav Petkov
2017-10-12 20:21 ` Brijesh Singh
2017-10-12 20:23 ` Borislav Petkov
2017-10-07 1:06 ` [Part2 PATCH v5.1 12.7/31] crypto: ccp: Implement SEV_PEK_CSR " Brijesh Singh
2017-10-12 19:53 ` Borislav Petkov
2017-10-13 2:24 ` Brijesh Singh
2017-10-13 4:13 ` Brijesh Singh
2017-10-13 10:20 ` Borislav Petkov
2017-10-13 9:14 ` Borislav Petkov
2017-10-07 1:06 ` [Part2 PATCH v5.1 12.8/31] crypto: ccp: Implement SEV_PEK_CERT_IMPORT " Brijesh Singh
2017-10-13 14:53 ` Borislav Petkov
2017-10-13 16:09 ` Brijesh Singh
2017-10-07 1:06 ` [Part2 PATCH v5.1 12.9/31] crypto: ccp: Implement SEV_PDH_CERT_EXPORT " Brijesh Singh
2017-10-13 15:01 ` Borislav Petkov
2017-10-07 18:40 ` [Part2 PATCH v5.1 12.1/31] crypto: ccp: Add Secure Encrypted Virtualization (SEV) command support Borislav Petkov
2017-10-08 13:30 ` Brijesh Singh
2017-10-08 14:00 ` Borislav Petkov
2017-10-09 0:11 ` Brijesh Singh
2017-10-09 15:21 ` Borislav Petkov
2017-10-10 15:00 ` Brijesh Singh
2017-10-10 18:43 ` Tom Lendacky
2017-10-10 20:04 ` Borislav Petkov
2017-10-11 14:19 ` Borislav Petkov
2017-10-11 14:23 ` Brijesh Singh
2017-10-11 16:50 ` [Part2 PATCH v5.2 12.2/31] " Brijesh Singh
2017-10-12 14:08 ` Borislav Petkov
2017-10-12 21:11 ` Brijesh Singh
2017-10-12 21:41 ` Borislav Petkov
2017-10-12 21:52 ` Brijesh Singh
2017-10-12 22:22 ` Borislav Petkov
2017-10-12 18:21 ` Borislav Petkov
2017-10-12 20:05 ` Brijesh Singh
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=97825322-e53b-153f-4208-62b750b9b341@amd.com \
--to=brijesh.singh@amd.com \
--cc=bp@suse.de \
--cc=gary.hook@amd.com \
--cc=herbert@gondor.apana.org.au \
--cc=kvm@vger.kernel.org \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=pbonzini@redhat.com \
--cc=rkrcmar@redhat.com \
--cc=thomas.lendacky@amd.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox