From: Ram Pai <linuxram@us.ibm.com>
To: mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org, hbabu@us.ibm.com,
mhocko@kernel.org, bauerman@linux.vnet.ibm.com,
linuxram@us.ibm.com, Ulrich.Weigand@de.ibm.com,
fweimer@redhat.com, msuchanek@suse.de
Subject: [PATCH v3 8/9] powerpc/core-pkeys: execute-permission on keys are disabled by default
Date: Tue, 17 Jul 2018 06:51:09 -0700 [thread overview]
Message-ID: <1531835470-32691-9-git-send-email-linuxram@us.ibm.com> (raw)
In-Reply-To: <1531835470-32691-1-git-send-email-linuxram@us.ibm.com>
Only when the key is allocated, its permission are enabled.
Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
---
tools/testing/selftests/powerpc/ptrace/core-pkey.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/tools/testing/selftests/powerpc/ptrace/core-pkey.c b/tools/testing/selftests/powerpc/ptrace/core-pkey.c
index 36bc312..b353d86 100644
--- a/tools/testing/selftests/powerpc/ptrace/core-pkey.c
+++ b/tools/testing/selftests/powerpc/ptrace/core-pkey.c
@@ -140,6 +140,10 @@ static int child(struct shared_info *info)
if (disable_execute)
info->iamr |= 1ul << pkeyshift(pkey1);
+ else
+ info->iamr &= ~(1ul << pkeyshift(pkey1));
+ info->iamr &= ~(1ul << pkeyshift(pkey2) | 1ul << pkeyshift(pkey3));
+
info->uamor |= 3ul << pkeyshift(pkey1) | 3ul << pkeyshift(pkey2);
--
1.7.1
next prev parent reply other threads:[~2018-07-17 13:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-17 13:51 [PATCH v3 0/9] powerpc/pkeys: fixes to pkeys Ram Pai
2018-07-17 13:51 ` [PATCH v3 1/9] powerpc/pkeys: Give all threads control of their key permissions Ram Pai
2018-07-24 13:59 ` [v3, " Michael Ellerman
2018-07-17 13:51 ` [PATCH v3 2/9] powerpc/pkeys: Deny read/write/execute by default Ram Pai
2018-07-17 13:51 ` [PATCH v3 3/9] powerpc/pkeys: key allocation/deallocation must not change pkey registers Ram Pai
2018-07-17 13:51 ` [PATCH v3 4/9] powerpc/pkeys: Save the pkey registers before fork Ram Pai
2018-07-17 13:51 ` [PATCH v3 5/9] powerpc/pkeys: fix calculation of total pkeys Ram Pai
2018-07-17 13:51 ` [PATCH v3 6/9] powerpc/pkeys: Preallocate execute-only key Ram Pai
2018-07-17 13:51 ` [PATCH v3 7/9] powerpc/pkeys: make protection key 0 less special Ram Pai
2018-07-17 13:51 ` Ram Pai [this message]
2018-07-17 13:51 ` [PATCH v3 9/9] powerpc/ptrace-pkeys: execute-permission on keys are disabled by default Ram Pai
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=1531835470-32691-9-git-send-email-linuxram@us.ibm.com \
--to=linuxram@us.ibm.com \
--cc=Ulrich.Weigand@de.ibm.com \
--cc=bauerman@linux.vnet.ibm.com \
--cc=fweimer@redhat.com \
--cc=hbabu@us.ibm.com \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mhocko@kernel.org \
--cc=mpe@ellerman.id.au \
--cc=msuchanek@suse.de \
/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).