From: Dave Hansen <dave.hansen@linux.intel.com> To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Dave Hansen <dave.hansen@linux.intel.com>, tglx@linutronix.de, linuxram@us.ibm.com, sandipan@linux.ibm.com, akpm@linux-foundation.org, fweimer@redhat.com, desnesn@linux.vnet.ibm.com, mingo@kernel.org, bauerman@linux.ibm.com, aneesh.kumar@linux.ibm.com, mpe@ellerman.id.au, mhocko@kernel.org, msuchanek@suse.de, shuah@kernel.org, x86@kernel.org Subject: [PATCH 0/4] selftests/vm/pkeys: Bug fixes and a new test Date: Fri, 11 Jun 2021 09:41:53 -0700 [thread overview] Message-ID: <20210611164153.91B76FB8@viggo.jf.intel.com> (raw) There has been a lot of activity on the x86 front around the XSAVE architecture which is used to context-switch processor state (among other things). In addition, AMD has recently joined the protection keys club by adding processor support for PKU. The AMD implementation helped uncover a kernel bug around the PKRU "init state", which actually applied to Intel's implementation but was just harder to hit. This series adds a test which is expected to help find this class of bug both on AMD and Intel. All the work around pkeys on x86 also uncovered a few bugs in the selftest. Any testing of this new code (especially from my powerpc friends) would be appreciated. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Cc: x86@kernel.org
WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave.hansen@linux.intel.com> To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org,Dave Hansen <dave.hansen@linux.intel.com>,tglx@linutronix.de,linuxram@us.ibm.com,sandipan@linux.ibm.com,akpm@linux-foundation.org,fweimer@redhat.com,desnesn@linux.vnet.ibm.com,mingo@kernel.org,bauerman@linux.ibm.com,aneesh.kumar@linux.ibm.com,mpe@ellerman.id.au,mhocko@kernel.org,msuchanek@suse.de,shuah@kernel.org,x86@kernel.org Subject: [PATCH 0/4] selftests/vm/pkeys: Bug fixes and a new test Date: Fri, 11 Jun 2021 09:41:53 -0700 [thread overview] Message-ID: <20210611164153.91B76FB8@viggo.jf.intel.com> (raw) There has been a lot of activity on the x86 front around the XSAVE architecture which is used to context-switch processor state (among other things). In addition, AMD has recently joined the protection keys club by adding processor support for PKU. The AMD implementation helped uncover a kernel bug around the PKRU "init state", which actually applied to Intel's implementation but was just harder to hit. This series adds a test which is expected to help find this class of bug both on AMD and Intel. All the work around pkeys on x86 also uncovered a few bugs in the selftest. Any testing of this new code (especially from my powerpc friends) would be appreciated. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Cc: x86@kernel.org
next reply other threads:[~2021-06-11 16:41 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-11 16:41 Dave Hansen [this message] 2021-06-11 16:41 ` [PATCH 0/4] selftests/vm/pkeys: Bug fixes and a new test Dave Hansen 2021-06-11 16:41 ` [PATCH 1/4] selftests/vm/pkeys: Fix alloc_random_pkey() to make it really, really random Dave Hansen 2021-06-11 16:41 ` Dave Hansen 2021-06-11 16:41 ` [PATCH 2/4] selftests/vm/pkeys: Handle negative sys_pkey_alloc() return code Dave Hansen 2021-06-11 16:41 ` Dave Hansen 2021-06-11 16:42 ` [PATCH 3/4] selftests/vm/pkeys: Refill shadow register after implicit kernel write Dave Hansen 2021-06-11 16:42 ` Dave Hansen 2021-06-11 16:42 ` [PATCH 4/4] selftests/vm/pkeys: Exercise x86 XSAVE init state Dave Hansen 2021-06-11 16:42 ` Dave Hansen 2021-06-13 8:54 ` [PATCH 0/4] selftests/vm/pkeys: Bug fixes and a new test Aneesh Kumar K.V
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=20210611164153.91B76FB8@viggo.jf.intel.com \ --to=dave.hansen@linux.intel.com \ --cc=akpm@linux-foundation.org \ --cc=aneesh.kumar@linux.ibm.com \ --cc=bauerman@linux.ibm.com \ --cc=desnesn@linux.vnet.ibm.com \ --cc=fweimer@redhat.com \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-mm@kvack.org \ --cc=linuxram@us.ibm.com \ --cc=mhocko@kernel.org \ --cc=mingo@kernel.org \ --cc=mpe@ellerman.id.au \ --cc=msuchanek@suse.de \ --cc=sandipan@linux.ibm.com \ --cc=shuah@kernel.org \ --cc=tglx@linutronix.de \ --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: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.