This is my first pull request for the newly opened qemu-2.8 tree. It
contains a heap of things that were too late for 2.7 and have been
queued for a while. In particular:
* A number of preliminary patches for the powernv machine type
* A substantial cleanup of exception handling which will be
necessary to support running a TCG with hypervisor
facilities
* A start on support for POWER9
* Some TCG implementations for new POWER9 instructions
* Some TCG and related cleanups in preparation for POWER9
* Some assorted TCG optimizations
* An implementation of the H_CHANGE_LOGICAL_LAN_MAC hypercall
which allows the MAC address to be changed on the PAPR virtual
NIC.
* Add some extra test cases for several machines (this isn't
strictly in the ppc code, but is most value to ppc)
NOTE: This pull request supersedes ppc-for-2.8-20160906, which had
some problems. Changes:
* Dropped BenH's lmw/stmw speedups, which break for
qemu-system-ppc64 on BE hosts
* A small fix to Thomas' serial output test to avoid a warning on
the isapc machine type.
* Some trivial checkpatch fixes
Note that some of the patches in this series still have large numbers
of checkpatch warnings. This is because they're moving existing code
that predates most of the checkpatch style conventions.
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Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.8-20160907' into staging
ppc patch queue for 2016-Sep-7
This is my first pull request for the newly opened qemu-2.8 tree. It
contains a heap of things that were too late for 2.7 and have been
queued for a while. In particular:
* A number of preliminary patches for the powernv machine type
* A substantial cleanup of exception handling which will be
necessary to support running a TCG with hypervisor
facilities
* A start on support for POWER9
* Some TCG implementations for new POWER9 instructions
* Some TCG and related cleanups in preparation for POWER9
* Some assorted TCG optimizations
* An implementation of the H_CHANGE_LOGICAL_LAN_MAC hypercall
which allows the MAC address to be changed on the PAPR virtual
NIC.
* Add some extra test cases for several machines (this isn't
strictly in the ppc code, but is most value to ppc)
NOTE: This pull request supersedes ppc-for-2.8-20160906, which had
some problems. Changes:
* Dropped BenH's lmw/stmw speedups, which break for
qemu-system-ppc64 on BE hosts
* A small fix to Thomas' serial output test to avoid a warning on
the isapc machine type.
* Some trivial checkpatch fixes
Note that some of the patches in this series still have large numbers
of checkpatch warnings. This is because they're moving existing code
that predates most of the checkpatch style conventions.
# gpg: Signature made Wed 07 Sep 2016 07:09:27 BST
# gpg: using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-2.8-20160907: (64 commits)
tests: Check serial output of firmware boot of some machines
tests: Resort check-qtest entries in Makefile.include
spapr: implement H_CHANGE_LOGICAL_LAN_MAC h_call
ppc: Improve a few more helper flags
ppc: Improve the exception helpers flags
ppc: Improve flags for helpers loading/writing the time facilities
ppc: Don't generate dead code on unconditional branches
ppc: Stop dumping state on all exceptions in linux-user
ppc: Fix catching some segfaults in user mode
ppc: Fix macio ESCC legacy mapping
hw/ppc: add a ppc_create_page_sizes_prop() helper routine
hw/ppc: use error_report instead of fprintf
ppc: Rename #include'd .c files to .inc.c
target-ppc: add extswsli[.] instruction
target-ppc: add vsrv instruction
target-ppc: add vslv instruction
target-ppc: add vcmpnez[b,h,w][.] instructions
target-ppc: add vabsdu[b,h,w] instructions
target-ppc: add dtstsfi[q] instructions
target-ppc: implement branch-less divd[o][.]
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The unlink() function doesn't accept a NULL pointer, so
don't pass it one. Spotted by the clang sanitizer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1470391392-28274-1-git-send-email-peter.maydell@linaro.org
Some of the machines that we have got a firmware image for write
some output to the serial console while booting up. We can use
this output to make sure that the machine is basically working,
so this adds a test that checks the output of these machines
for some well-known "magic" strings.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The rather random list of check-qtest-xxx entries caused some
confusion in the past, where to use "=" and where to use "+="
(see commits 0ccac16f59 and 1f5c1cfbae
for example).
Sorting the check-qtest-xxx entries by architecure instead and
using some empty lines inbetween should help to ease this
situation a little bit, so that it is hopefully now obvious
that new tests should be added with "+=" instead of "=".
While we are at it, this patch also comments out two of the
"gcov-files-..." lines since the corresponding m48t59-test is
disabled for sparc and sparc64, too.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Since kernel v4.0, linux uses H_CHANGE_LOGICAL_LAN_MAC to change lively
the MAC address of an ibmveth interface.
As QEMU doesn't implement this h_call, we can't change anymore the
MAC address of an spapr-vlan interface.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Mostly turn "store" type of helpers into TCG_CALL_NO_WG because
they can take exceptions. Also fixup_thrm doesn't read nor write
the tracked environment.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
They generate exceptions, but they don't update the environment
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Those helpers never load from or store to the TCG tracked environment,
not do they generate synchronous exceptions (they might generate an
asynchronous interrupt but that's not an issue here).
So we can make them all use TCG_CALL_NO_RWG
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
We are always generating the "else" case of the condition even when
generating an unconditional branch that will never hit it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Other archs don't do it, some programs catch signals just fine
and those dumps just clutter the output. Keep the dumps for cases
that aren't supposed to happen such as unknown codes.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The usermode "translate" code generates an error code value that
has the "is_write" bit set, which causes our switch/case to miss
and display "Invalid segfault errno" and a spurrious second state
dump. Fix it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The current mapping, while correct for the base ports (which is all the
driver uses these days), is wrong for the extended registers.
I suspect the bugs come from incorrect tables in the CHRP IO Ref document,
I have verified the new values here match Apple's MacTech.pdf.
Note: Nothing that I know of actually uses these registers so it's not a
huge deal, but this patch has the added advantage of adding comments to
document what the registers are.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The exact same routine will be used in PowerNV.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Also while at it, group the #include statements in translate.c
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
extswsli : Extend Sign Word & Shift Left Immediate
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Adds Vector Shift Right Variable instruction.
Signed-off-by: Vivek Andrew Sha <vivekandrewsha@gmail.com>
[ reverse the order of computation to avoid temporary array ]
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
vslv: Vector Shift Left Variable
Signed-off-by: Vivek Andrew Sha <vivekandrewsha@gmail.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Adds following instructions:
vcmpnezb[.]: Vector Compare Not Equal or Zero Byte
vcmpnezh[.]: Vector Compare Not Equal or Zero Halfword
vcmpnezw[.]: Vector Compare Not Equal or Zero Word
Signed-off-by: Swapnil Bokade <bokadeswapnil@gmail.com>
[ collapse switch case ]
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
DFP Test Significance Immediate [Quad]
Signed-off-by: Sandipan Das <sandipandas1990@gmail.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Similar to divw, implement branch-less divd.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
While implementing modulo instructions figured out that the
implementation uses many branches. Change the logic to achieve the
branch-less code. Undefined value is set to dividend in case of invalid
input.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Just generate an alignment interrupt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Some operations aren't allowed in LE mode, use a helper rather than
open coding the exception generation.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
We don't use it so let's not generate the updates.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Use tlb_vaddr_to_host to do a fast path single translate for
the whole cache line. Also make the reservation check match
the entire range.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
We don't need to call a helper for trap always and trap never
which are used by Linux under some circumstances.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
--
v2. Don't generate the helper call when trapping always
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The current alignment exception generation tries to load the opcode
to put in DSISR from a context where a cpu_ldl_code() is really not
a good idea. It might fault and longjmp out and that's not something
we want happening here.
Instead, pass the releavant opcode bits via the error_code.
There are a couple of cases of alignment interrupts that won't set
anything, the ones coming from access to direct store segments, but
that doesn't happen in practice, nobody used direct store segments
and they are gone from newer chips.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Instead, pass GETPC() result to the corresponding helpers.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Move the NIP update to after the conditional branch so that we
don't do it if we aren't going to take the alignment exception
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This is no longer necessary as the helpers will properly retrieve
the return address when needed.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This is no longer necessary as the helpers will properly retrieve
the return address when needed.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This is no longer necessary as the helpers will properly retrieve
the return address when needed. Also remove gen_update_current_nip()
which didn't seem to make much sense to me.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This is no longer necessary as the helpers will properly retrieve
the return address when needed
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
We need to pass it to the raise helper since we don't update it
before the calls.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Instead, pass GETPC() result to the corresponding helpers.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Instead, pass GETPC() result to the corresponding helpers. This
requires a bit of fiddling to get the PC (hopefully) right in
the case where we generate a program check, though the hacks there
are temporary, a subsequent patch will clean this all up by always
having the nip already set to the right instruction when taking
the fault.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[dwg: Fix trivial checkpatch warning]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
We don't implement imprecise FP exceptions and using store_current
which sets SRR1 to the *previous* instruction never makes sense
for these. So let's be truthful and make them precise, which is
allowed by the architecture.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This is no longer necessary as the helpers will properly retrieve
the return address.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Instead of relying on NIP having been updated already.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[dwg: Fold in fix to mark function always_inline]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Instead of relying on NIP having been updated already
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Makes things a bit more manageable
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Makes things a bit more manageable
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Makes things a bit more manageable
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Makes things a bit more manageable
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Marc-André Lureau