From: Florian Weimer <fweimer@redhat.com>
To: Sandipan Das <sandipan@linux.ibm.com>
Cc: akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kselftest@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linuxram@us.ibm.com, aneesh.kumar@linux.ibm.com,
bauerman@linux.ibm.com, mpe@ellerman.id.au
Subject: Re: [PATCH 2/2] selftests: vm: pkeys: Fix powerpc access right updates
Date: Fri, 08 May 2020 20:01:34 +0200 [thread overview]
Message-ID: <87blmymhkx.fsf@oldenburg2.str.redhat.com> (raw)
In-Reply-To: <5f65cf37be993760de8112a88da194e3ccbb2bf8.1588959697.git.sandipan@linux.ibm.com> (Sandipan Das's message of "Fri, 8 May 2020 23:19:15 +0530")
* Sandipan Das:
> The Power ISA mandates that all writes to the Authority
> Mask Register (AMR) must always be preceded as well as
> succeeded by a context-synchronizing instruction. This
> applies to both the privileged and unprivileged variants
> of the Move To AMR instruction.
Ugh. Do you have a reference for that?
We need to fix this in glibc.
Thanks,
Florian
WARNING: multiple messages have this Message-ID (diff)
From: Florian Weimer <fweimer@redhat.com>
To: Sandipan Das <sandipan@linux.ibm.com>
Cc: aneesh.kumar@linux.ibm.com, linuxram@us.ibm.com,
linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org,
bauerman@linux.ibm.com
Subject: Re: [PATCH 2/2] selftests: vm: pkeys: Fix powerpc access right updates
Date: Fri, 08 May 2020 20:01:34 +0200 [thread overview]
Message-ID: <87blmymhkx.fsf@oldenburg2.str.redhat.com> (raw)
In-Reply-To: <5f65cf37be993760de8112a88da194e3ccbb2bf8.1588959697.git.sandipan@linux.ibm.com> (Sandipan Das's message of "Fri, 8 May 2020 23:19:15 +0530")
* Sandipan Das:
> The Power ISA mandates that all writes to the Authority
> Mask Register (AMR) must always be preceded as well as
> succeeded by a context-synchronizing instruction. This
> applies to both the privileged and unprivileged variants
> of the Move To AMR instruction.
Ugh. Do you have a reference for that?
We need to fix this in glibc.
Thanks,
Florian
next prev parent reply other threads:[~2020-05-08 18:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-08 17:49 [PATCH 0/2] selftests: vm: pkeys: Some powerpc fixes Sandipan Das
2020-05-08 17:49 ` Sandipan Das
2020-05-08 17:49 ` [PATCH 1/2] selftests: vm: pkeys: Fix powerpc access right definitions Sandipan Das
2020-05-08 17:49 ` Sandipan Das
2020-05-08 17:49 ` [PATCH 2/2] selftests: vm: pkeys: Fix powerpc access right updates Sandipan Das
2020-05-08 17:49 ` Sandipan Das
2020-05-08 18:01 ` Florian Weimer [this message]
2020-05-08 18:01 ` Florian Weimer
2020-05-08 19:54 ` Sandipan Das
2020-05-08 19:54 ` Sandipan Das
2020-05-08 20:03 ` Florian Weimer
2020-05-08 20:03 ` Florian Weimer
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