From: Anshuman Khandual <khandual@linux.vnet.ibm.com>
To: Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org
Cc: mikey@neuling.org, james.hogan@imgtec.com, avagin@openvz.org,
Paul.Clothier@imgtec.com, davem@davemloft.net,
peterz@infradead.org, palves@redhat.com,
Ulrich Weigand <uweigand@de.ibm.com>,
shuahkh@osg.samsung.com, oleg@redhat.com, dhowells@redhat.com,
kirjanov@gmail.com, davej@redhat.com, akpm@linux-foundation.org,
sukadev@linux.vnet.ibm.com, tglx@linutronix.de,
sam.bobroff@au1.ibm.com
Subject: Re: [V6,1/9] elf: Add new powerpc specifc core note sections
Date: Wed, 14 Jan 2015 10:14:00 +0530 [thread overview]
Message-ID: <54B5F410.2030002@linux.vnet.ibm.com> (raw)
In-Reply-To: <54A50094.5070902@linux.vnet.ibm.com>
On 01/01/2015 01:38 PM, Anshuman Khandual wrote:
>> > Also, we've noticed that the 'misc' regset contains registers from different ISA
>> > versions (dscr and ppr appear in ISA 2.05, tar is from 2.07). I'm not sure if
>> > there is a way to detect presence/validity of such registers, but perhaps it
>> > might be a good idea to separate registers from different ISAs in different
>> > regsets.
> Thats right, will use feature CPU_FTR_ARCH_207S (which checks whether we are v2.07
> compliant) to detect whether TAR register is available or not.
>
Need to correct something here. Run time detection of the presence of TAR register
through the feature bit CPU_FTR_ARCH_207S as I had mentioned before is not required.
Right now we take care of the compile time availability of the individual registers
the same way it is present on the thread struct. In the systems which do not have the
TAR register, thread.tar is always going to be 0 which is exactly the same value we
would get by excluding tar register copy after the run time detection of the feature.
next prev parent reply other threads:[~2015-01-14 4:44 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-02 7:56 [PATCH V6 0/9] Add new powerpc specific ELF core notes Anshuman Khandual
2014-12-02 7:56 ` [PATCH V6 1/9] elf: Add new powerpc specifc core note sections Anshuman Khandual
2014-12-03 5:22 ` [V6,1/9] " Michael Ellerman
2014-12-03 6:48 ` Anshuman Khandual
2014-12-08 10:08 ` Anshuman Khandual
2014-12-19 19:28 ` Edjunior Barbosa Machado
2015-01-01 8:08 ` Anshuman Khandual
2015-01-14 4:44 ` Anshuman Khandual [this message]
2015-01-21 23:39 ` Michael Neuling
2015-01-22 15:55 ` Ulrich Weigand
2015-01-22 21:44 ` Michael Neuling
2015-01-28 4:28 ` Michael Neuling
2015-02-06 14:47 ` Ulrich Weigand
2015-02-23 4:51 ` Michael Neuling
2015-03-18 12:53 ` Ulrich Weigand
2015-03-18 22:45 ` Michael Neuling
2015-03-18 22:50 ` Michael Neuling
2015-03-23 10:34 ` Anshuman Khandual
2015-04-08 17:50 ` Ulrich Weigand
2015-04-08 23:11 ` Michael Neuling
2015-04-09 12:50 ` Anshuman Khandual
2015-04-10 3:03 ` Michael Neuling
2015-04-10 9:10 ` Anshuman Khandual
2015-04-10 10:33 ` Ulrich Weigand
2015-04-13 8:48 ` Anshuman Khandual
2015-04-20 6:42 ` Anshuman Khandual
2015-04-20 12:27 ` Ulrich Weigand
2015-04-21 4:55 ` Anshuman Khandual
2015-04-21 14:41 ` Ulrich Weigand
2015-04-22 9:24 ` Anshuman Khandual
2014-12-02 7:56 ` [PATCH V6 2/9] powerpc, process: Add the function flush_tmregs_to_thread Anshuman Khandual
2014-12-02 7:56 ` [PATCH V6 3/9] powerpc, ptrace: Enable fpr_(get/set) for transactional memory Anshuman Khandual
2014-12-02 7:56 ` [PATCH V6 4/9] powerpc, ptrace: Enable vr_(get/set) " Anshuman Khandual
2014-12-02 7:56 ` [PATCH V6 5/9] powerpc, ptrace: Enable support for transactional memory register sets Anshuman Khandual
2014-12-02 7:56 ` [PATCH V6 6/9] powerpc, ptrace: Enable support for miscellaneous debug registers Anshuman Khandual
2014-12-02 7:56 ` [PATCH V6 7/9] selftests, powerpc: Add test case for TM related ptrace interface Anshuman Khandual
2014-12-02 7:56 ` [PATCH V6 8/9] selftests, powerpc: Make GIT ignore all binaries related to TM Anshuman Khandual
2014-12-02 7:56 ` [PATCH V6 9/9] selftests: Make GIT ignore all binaries in powerpc test suite Anshuman Khandual
2014-12-02 18:23 ` Shuah Khan
2014-12-03 5:46 ` Anshuman Khandual
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