From: Sumit Garg <sumit.garg@linaro.org>
To: keyrings@vger.kernel.org, linux-integrity@vger.kernel.org,
linux-security-module@vger.kernel.org
Cc: jens.wiklander@linaro.org, corbet@lwn.net, dhowells@redhat.com,
jejb@linux.ibm.com, jarkko.sakkinen@linux.intel.com,
zohar@linux.ibm.com, jmorris@namei.org, serge@hallyn.com,
ard.biesheuvel@linaro.org, daniel.thompson@linaro.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
tee-dev@lists.linaro.org, Sumit Garg <sumit.garg@linaro.org>
Subject: [RFC 1/7] tee: optee: allow kernel pages to register as shm
Date: Thu, 13 Jun 2019 16:00:27 +0530 [thread overview]
Message-ID: <1560421833-27414-2-git-send-email-sumit.garg@linaro.org> (raw)
In-Reply-To: <1560421833-27414-1-git-send-email-sumit.garg@linaro.org>
Kernel pages are marked as normal type memory only so allow kernel pages
to be registered as shared memory with OP-TEE.
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
---
drivers/tee/optee/call.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/tee/optee/call.c b/drivers/tee/optee/call.c
index aa94270..bce45b1 100644
--- a/drivers/tee/optee/call.c
+++ b/drivers/tee/optee/call.c
@@ -553,6 +553,13 @@ static int check_mem_type(unsigned long start, size_t num_pages)
struct mm_struct *mm = current->mm;
int rc;
+ /*
+ * Allow kernel address to register with OP-TEE as kernel
+ * pages are configured as normal memory only.
+ */
+ if (virt_addr_valid(start))
+ return 0;
+
down_read(&mm->mmap_sem);
rc = __check_mem_type(find_vma(mm, start),
start + num_pages * PAGE_SIZE);
--
2.7.4
next prev parent reply other threads:[~2019-06-13 15:35 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-13 10:30 [RFC 0/7] Introduce TEE based Trusted Keys support Sumit Garg
2019-06-13 10:30 ` Sumit Garg [this message]
2019-06-13 15:12 ` [RFC 1/7] tee: optee: allow kernel pages to register as shm Jarkko Sakkinen
2019-06-13 15:17 ` Jarkko Sakkinen
2019-06-13 15:17 ` Jarkko Sakkinen
2019-06-14 5:12 ` Sumit Garg
2019-06-14 8:15 ` Jens Wiklander
2019-06-13 10:30 ` [RFC 2/7] tee: enable support to register kernel memory Sumit Garg
2019-06-13 15:20 ` Jarkko Sakkinen
2019-06-14 5:13 ` Sumit Garg
2019-06-14 8:16 ` Jens Wiklander
2019-06-13 10:30 ` [RFC 3/7] tee: add private login method for kernel clients Sumit Garg
2019-07-08 15:39 ` Jens Wiklander
2019-07-09 5:56 ` Sumit Garg
2019-07-09 7:03 ` Jens Wiklander
2019-07-09 9:36 ` Sumit Garg
2019-07-29 7:08 ` Jens Wiklander
2019-07-29 13:13 ` Sumit Garg
2019-06-13 10:30 ` [RFC 4/7] KEYS: trusted: Introduce TEE based Trusted Keys Sumit Garg
2019-06-13 15:32 ` Jarkko Sakkinen
2019-06-14 5:43 ` Sumit Garg
2019-06-13 10:30 ` [RFC 5/7] KEYS: encrypted: Allow TEE based trusted master keys Sumit Garg
2019-06-13 10:30 ` [RFC 6/7] doc: keys: Document usage of TEE based Trusted Keys Sumit Garg
2019-06-13 15:34 ` Jarkko Sakkinen
2019-06-14 5:37 ` Sumit Garg
2019-06-14 15:36 ` Jarkko Sakkinen
2019-06-13 10:30 ` [RFC 7/7] MAINTAINERS: Add entry for " Sumit Garg
2019-06-13 16:40 ` [RFC 0/7] Introduce TEE based Trusted Keys support Casey Schaufler
2019-06-14 0:03 ` Mimi Zohar
2019-06-14 8:17 ` Sumit Garg
2019-06-14 5:58 ` Sumit Garg
2019-07-08 12:41 ` Sumit Garg
2019-07-08 16:31 ` Jens Wiklander
2019-07-09 5:58 ` Sumit Garg
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=1560421833-27414-2-git-send-email-sumit.garg@linaro.org \
--to=sumit.garg@linaro.org \
--cc=ard.biesheuvel@linaro.org \
--cc=corbet@lwn.net \
--cc=daniel.thompson@linaro.org \
--cc=dhowells@redhat.com \
--cc=jarkko.sakkinen@linux.intel.com \
--cc=jejb@linux.ibm.com \
--cc=jens.wiklander@linaro.org \
--cc=jmorris@namei.org \
--cc=keyrings@vger.kernel.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-integrity@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=serge@hallyn.com \
--cc=tee-dev@lists.linaro.org \
--cc=zohar@linux.ibm.com \
/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;
as well as URLs for NNTP newsgroup(s).