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* [Qemu-devel] ppc64 TCG emulation broken
@ 2016-09-29  7:11 Bharata B Rao
  2016-09-29  7:47 ` David Gibson
  0 siblings, 1 reply; 5+ messages in thread
From: Bharata B Rao @ 2016-09-29  7:11 UTC (permalink / raw)
  To: qemu-devel; +Cc: qemu-ppc, David Gibson, Nikunj A. Dadhania, raji

Hi,

I am observing a kernel crash with ppc64 TCG guest on x86 and git
bisect points to this commit:

e7b1e06fbcb81ac66e2586214a6c42fdf15fadf3
[target-ppc: add vector insert instructions]

I hit the following guest kernel panic during boot:

         Starting Switch Root...
[   76.632260] systemd-journald[113]: Received SIGTERM from PID 1 (systemd).
[   77.082688] systemd-cgroups[1143]: unhandled signal 4 at
00003fff85d3d718 nip 00003fff85d3d718 lr 00003fff85c8c274 code 30001
[   77.479368] systemd-coredum[1144]: unhandled signal 4 at
00003fff948bd718 nip 00003fff948bd718 lr 00003fff9480c274 code 30001
[   77.479860] audit_printk_skb: 39 callbacks suppressed
[   77.479988] audit: type=1701 audit(1475132719.390:35):
auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1144
comm="systemd-coredum" exe="/usr/lib/systemd/systemd-coredump" sig=4
[   77.485034] Process 1144(systemd-coredum) has RLIMIT_CORE set to 1
[   77.485156] Aborting core
[   77.858307] systemd[1]: unhandled signal 4 at 00003fff9a48d718 nip
00003fff9a48d718 lr 00003fff9a3dc274 code 30001
[   77.858868] audit: type=1701 audit(1475132719.770:36):
auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1
comm="systemd" exe="/usr/lib/systemd/systemd" sig=4
[   78.004191] systemd-coredum[1145]: unhandled signal 4 at
00003fffa475d718 nip 00003fffa475d718 lr 00003fffa46ac274 code 30001
[   78.004648] audit: type=1701 audit(1475132719.910:37):
auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1145
comm="systemd-coredum" exe="/usr/lib/systemd/systemd-coredump" sig=4
[   78.004971] Process 1145(systemd-coredum) has RLIMIT_CORE set to 1
[   78.005066] Aborting core
[   78.015142] Kernel panic - not syncing: Attempted to kill init!
exitcode=0x00000084
[   78.015142]
[   78.016926] CPU: 0 PID: 1 Comm: systemd Not tainted 4.6.4-301.fc24.ppc64 #1
[   78.017726] Call Trace:
[   78.019154] [c00000007e6638d0] [c0000000009df0f0]
.dump_stack+0xa8/0xe8 (unreliable)
[   78.022485] [c00000007e663960] [c0000000009dd6bc] .panic+0x12c/0x2fc
[   78.022631] [c00000007e663a00] [c0000000000cd6a8] .do_exit+0xca8/0xcb0
[   78.022735] [c00000007e663ae0] [c0000000000cd77c] .do_group_exit+0x5c/0xf0
[   78.022815] [c00000007e663b70] [c0000000000dd4ec] .get_signal+0x3bc/0x770
[   78.022918] [c00000007e663c70] [c00000000001761c] .do_signal+0x4c/0x2a0
[   78.023021] [c00000007e663db0] [c000000000017a4c] .do_notify_resume+0xac/0xc0
[   78.023411] [c00000007e663e30] [c000000000009944]
.ret_from_except_lite+0x70/0x74
[   78.077889] ---[ end Kernel panic - not syncing: Attempted to kill
init! exitcode=0x00000084

Regards,
Bharata.
-- 
http://raobharata.wordpress.com/

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Qemu-devel] ppc64 TCG emulation broken
  2016-09-29  7:11 [Qemu-devel] ppc64 TCG emulation broken Bharata B Rao
@ 2016-09-29  7:47 ` David Gibson
  2016-09-29  8:08   ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
  2016-09-29  8:34   ` [Qemu-devel] " Bharata B Rao
  0 siblings, 2 replies; 5+ messages in thread
From: David Gibson @ 2016-09-29  7:47 UTC (permalink / raw)
  To: Bharata B Rao; +Cc: qemu-devel, qemu-ppc, Nikunj A. Dadhania, raji

[-- Attachment #1: Type: text/plain, Size: 3376 bytes --]

On Thu, Sep 29, 2016 at 12:41:04PM +0530, Bharata B Rao wrote:
> Hi,
> 
> I am observing a kernel crash with ppc64 TCG guest on x86 and git
> bisect points to this commit:
> 
> e7b1e06fbcb81ac66e2586214a6c42fdf15fadf3
> [target-ppc: add vector insert instructions]
> 
> I hit the following guest kernel panic during boot:
> 
>          Starting Switch Root...
> [   76.632260] systemd-journald[113]: Received SIGTERM from PID 1 (systemd).
> [   77.082688] systemd-cgroups[1143]: unhandled signal 4 at
> 00003fff85d3d718 nip 00003fff85d3d718 lr 00003fff85c8c274 code 30001
> [   77.479368] systemd-coredum[1144]: unhandled signal 4 at
> 00003fff948bd718 nip 00003fff948bd718 lr 00003fff9480c274 code 30001
> [   77.479860] audit_printk_skb: 39 callbacks suppressed
> [   77.479988] audit: type=1701 audit(1475132719.390:35):
> auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1144
> comm="systemd-coredum" exe="/usr/lib/systemd/systemd-coredump" sig=4
> [   77.485034] Process 1144(systemd-coredum) has RLIMIT_CORE set to 1
> [   77.485156] Aborting core
> [   77.858307] systemd[1]: unhandled signal 4 at 00003fff9a48d718 nip
> 00003fff9a48d718 lr 00003fff9a3dc274 code 30001
> [   77.858868] audit: type=1701 audit(1475132719.770:36):
> auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1
> comm="systemd" exe="/usr/lib/systemd/systemd" sig=4
> [   78.004191] systemd-coredum[1145]: unhandled signal 4 at
> 00003fffa475d718 nip 00003fffa475d718 lr 00003fffa46ac274 code 30001
> [   78.004648] audit: type=1701 audit(1475132719.910:37):
> auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1145
> comm="systemd-coredum" exe="/usr/lib/systemd/systemd-coredump" sig=4
> [   78.004971] Process 1145(systemd-coredum) has RLIMIT_CORE set to 1
> [   78.005066] Aborting core
> [   78.015142] Kernel panic - not syncing: Attempted to kill init!
> exitcode=0x00000084
> [   78.015142]
> [   78.016926] CPU: 0 PID: 1 Comm: systemd Not tainted 4.6.4-301.fc24.ppc64 #1
> [   78.017726] Call Trace:
> [   78.019154] [c00000007e6638d0] [c0000000009df0f0]
> .dump_stack+0xa8/0xe8 (unreliable)
> [   78.022485] [c00000007e663960] [c0000000009dd6bc] .panic+0x12c/0x2fc
> [   78.022631] [c00000007e663a00] [c0000000000cd6a8] .do_exit+0xca8/0xcb0
> [   78.022735] [c00000007e663ae0] [c0000000000cd77c] .do_group_exit+0x5c/0xf0
> [   78.022815] [c00000007e663b70] [c0000000000dd4ec] .get_signal+0x3bc/0x770
> [   78.022918] [c00000007e663c70] [c00000000001761c] .do_signal+0x4c/0x2a0
> [   78.023021] [c00000007e663db0] [c000000000017a4c] .do_notify_resume+0xac/0xc0
> [   78.023411] [c00000007e663e30] [c000000000009944]
> .ret_from_except_lite+0x70/0x74
> [   78.077889] ---[ end Kernel panic - not syncing: Attempted to kill
> init! exitcode=0x00000084

Huh.  Well, that's unfortunate.  I don't imagine the guest is trying
to use any of those new POWER9 instructions, so I guess we must have
broken decode of one of the existing vector instructions with which it
shares some part of the opcode.

Any chance you could trace this and work out what instruction is
giving the first illegal instruction exception?

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 819 bytes --]

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Qemu-devel] [Qemu-ppc] ppc64 TCG emulation broken
  2016-09-29  7:47 ` David Gibson
@ 2016-09-29  8:08   ` Alexander Graf
  2016-09-29  8:15     ` Nikunj A Dadhania
  2016-09-29  8:34   ` [Qemu-devel] " Bharata B Rao
  1 sibling, 1 reply; 5+ messages in thread
From: Alexander Graf @ 2016-09-29  8:08 UTC (permalink / raw)
  To: David Gibson, Bharata B Rao; +Cc: raji, qemu-ppc, qemu-devel

On 09/29/2016 09:47 AM, David Gibson wrote:
> On Thu, Sep 29, 2016 at 12:41:04PM +0530, Bharata B Rao wrote:
>> Hi,
>>
>> I am observing a kernel crash with ppc64 TCG guest on x86 and git
>> bisect points to this commit:
>>
>> e7b1e06fbcb81ac66e2586214a6c42fdf15fadf3
>> [target-ppc: add vector insert instructions]
>>
>> I hit the following guest kernel panic during boot:
>>
>>           Starting Switch Root...
>> [   76.632260] systemd-journald[113]: Received SIGTERM from PID 1 (systemd).
>> [   77.082688] systemd-cgroups[1143]: unhandled signal 4 at
>> 00003fff85d3d718 nip 00003fff85d3d718 lr 00003fff85c8c274 code 30001
>> [   77.479368] systemd-coredum[1144]: unhandled signal 4 at
>> 00003fff948bd718 nip 00003fff948bd718 lr 00003fff9480c274 code 30001
>> [   77.479860] audit_printk_skb: 39 callbacks suppressed
>> [   77.479988] audit: type=1701 audit(1475132719.390:35):
>> auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1144
>> comm="systemd-coredum" exe="/usr/lib/systemd/systemd-coredump" sig=4
>> [   77.485034] Process 1144(systemd-coredum) has RLIMIT_CORE set to 1
>> [   77.485156] Aborting core
>> [   77.858307] systemd[1]: unhandled signal 4 at 00003fff9a48d718 nip
>> 00003fff9a48d718 lr 00003fff9a3dc274 code 30001
>> [   77.858868] audit: type=1701 audit(1475132719.770:36):
>> auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1
>> comm="systemd" exe="/usr/lib/systemd/systemd" sig=4
>> [   78.004191] systemd-coredum[1145]: unhandled signal 4 at
>> 00003fffa475d718 nip 00003fffa475d718 lr 00003fffa46ac274 code 30001
>> [   78.004648] audit: type=1701 audit(1475132719.910:37):
>> auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1145
>> comm="systemd-coredum" exe="/usr/lib/systemd/systemd-coredump" sig=4
>> [   78.004971] Process 1145(systemd-coredum) has RLIMIT_CORE set to 1
>> [   78.005066] Aborting core
>> [   78.015142] Kernel panic - not syncing: Attempted to kill init!
>> exitcode=0x00000084
>> [   78.015142]
>> [   78.016926] CPU: 0 PID: 1 Comm: systemd Not tainted 4.6.4-301.fc24.ppc64 #1
>> [   78.017726] Call Trace:
>> [   78.019154] [c00000007e6638d0] [c0000000009df0f0]
>> .dump_stack+0xa8/0xe8 (unreliable)
>> [   78.022485] [c00000007e663960] [c0000000009dd6bc] .panic+0x12c/0x2fc
>> [   78.022631] [c00000007e663a00] [c0000000000cd6a8] .do_exit+0xca8/0xcb0
>> [   78.022735] [c00000007e663ae0] [c0000000000cd77c] .do_group_exit+0x5c/0xf0
>> [   78.022815] [c00000007e663b70] [c0000000000dd4ec] .get_signal+0x3bc/0x770
>> [   78.022918] [c00000007e663c70] [c00000000001761c] .do_signal+0x4c/0x2a0
>> [   78.023021] [c00000007e663db0] [c000000000017a4c] .do_notify_resume+0xac/0xc0
>> [   78.023411] [c00000007e663e30] [c000000000009944]
>> .ret_from_except_lite+0x70/0x74
>> [   78.077889] ---[ end Kernel panic - not syncing: Attempted to kill
>> init! exitcode=0x00000084
> Huh.  Well, that's unfortunate.  I don't imagine the guest is trying
> to use any of those new POWER9 instructions, so I guess we must have
> broken decode of one of the existing vector instructions with which it
> shares some part of the opcode.
>
> Any chance you could trace this and work out what instruction is
> giving the first illegal instruction exception?

... and whenever someone has some spare time, I would strongly advise 
for implementing RISU on PowerPC to catch these things before they happen ;)

   https://wiki.linaro.org/PeterMaydell/Risu


Alex

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Qemu-devel] [Qemu-ppc] ppc64 TCG emulation broken
  2016-09-29  8:08   ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
@ 2016-09-29  8:15     ` Nikunj A Dadhania
  0 siblings, 0 replies; 5+ messages in thread
From: Nikunj A Dadhania @ 2016-09-29  8:15 UTC (permalink / raw)
  To: Alexander Graf, David Gibson, Bharata B Rao, jose
  Cc: raji, qemu-ppc, qemu-devel

Alexander Graf <agraf@suse.de> writes:
> On 09/29/2016 09:47 AM, David Gibson wrote:
>> On Thu, Sep 29, 2016 at 12:41:04PM +0530, Bharata B Rao wrote:
>> [   78.015142] Kernel panic - not syncing: Attempted to kill init!
>>> exitcode=0x00000084
>>> [   78.015142]
>>> [   78.016926] CPU: 0 PID: 1 Comm: systemd Not tainted 4.6.4-301.fc24.ppc64 #1
>>> [   78.017726] Call Trace:
>>> [   78.019154] [c00000007e6638d0] [c0000000009df0f0]
>>> .dump_stack+0xa8/0xe8 (unreliable)
>>> [   78.022485] [c00000007e663960] [c0000000009dd6bc] .panic+0x12c/0x2fc
>>> [   78.022631] [c00000007e663a00] [c0000000000cd6a8] .do_exit+0xca8/0xcb0
>>> [   78.022735] [c00000007e663ae0] [c0000000000cd77c] .do_group_exit+0x5c/0xf0
>>> [   78.022815] [c00000007e663b70] [c0000000000dd4ec] .get_signal+0x3bc/0x770
>>> [   78.022918] [c00000007e663c70] [c00000000001761c] .do_signal+0x4c/0x2a0
>>> [   78.023021] [c00000007e663db0] [c000000000017a4c] .do_notify_resume+0xac/0xc0
>>> [   78.023411] [c00000007e663e30] [c000000000009944]
>>> .ret_from_except_lite+0x70/0x74
>>> [   78.077889] ---[ end Kernel panic - not syncing: Attempted to kill
>>> init! exitcode=0x00000084
>> Huh.  Well, that's unfortunate.  I don't imagine the guest is trying
>> to use any of those new POWER9 instructions, so I guess we must have
>> broken decode of one of the existing vector instructions with which it
>> shares some part of the opcode.
>>
>> Any chance you could trace this and work out what instruction is
>> giving the first illegal instruction exception?
>
> ... and whenever someone has some spare time, I would strongly advise 
> for implementing RISU on PowerPC to catch these things before they happen ;)
>
>    https://wiki.linaro.org/PeterMaydell/Risu

Ziviani is spending time to get this working for PowerPC

Regards
Nikunj

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Qemu-devel] ppc64 TCG emulation broken
  2016-09-29  7:47 ` David Gibson
  2016-09-29  8:08   ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
@ 2016-09-29  8:34   ` Bharata B Rao
  1 sibling, 0 replies; 5+ messages in thread
From: Bharata B Rao @ 2016-09-29  8:34 UTC (permalink / raw)
  To: David Gibson; +Cc: qemu-devel, qemu-ppc, Nikunj A. Dadhania, raji

On Thu, Sep 29, 2016 at 1:17 PM, David Gibson
<david@gibson.dropbear.id.au> wrote:
> On Thu, Sep 29, 2016 at 12:41:04PM +0530, Bharata B Rao wrote:
>> Hi,
>>
>> I am observing a kernel crash with ppc64 TCG guest on x86 and git
>> bisect points to this commit:
>>
>> e7b1e06fbcb81ac66e2586214a6c42fdf15fadf3
>> [target-ppc: add vector insert instructions]
>>
>> I hit the following guest kernel panic during boot:
>>
>>          Starting Switch Root...
>> [   76.632260] systemd-journald[113]: Received SIGTERM from PID 1 (systemd).
>> [   77.082688] systemd-cgroups[1143]: unhandled signal 4 at
>> 00003fff85d3d718 nip 00003fff85d3d718 lr 00003fff85c8c274 code 30001
>> [   77.479368] systemd-coredum[1144]: unhandled signal 4 at
>> 00003fff948bd718 nip 00003fff948bd718 lr 00003fff9480c274 code 30001
>> [   77.479860] audit_printk_skb: 39 callbacks suppressed
>> [   77.479988] audit: type=1701 audit(1475132719.390:35):
>> auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1144
>> comm="systemd-coredum" exe="/usr/lib/systemd/systemd-coredump" sig=4
>> [   77.485034] Process 1144(systemd-coredum) has RLIMIT_CORE set to 1
>> [   77.485156] Aborting core
>> [   77.858307] systemd[1]: unhandled signal 4 at 00003fff9a48d718 nip
>> 00003fff9a48d718 lr 00003fff9a3dc274 code 30001
>> [   77.858868] audit: type=1701 audit(1475132719.770:36):
>> auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1
>> comm="systemd" exe="/usr/lib/systemd/systemd" sig=4
>> [   78.004191] systemd-coredum[1145]: unhandled signal 4 at
>> 00003fffa475d718 nip 00003fffa475d718 lr 00003fffa46ac274 code 30001
>> [   78.004648] audit: type=1701 audit(1475132719.910:37):
>> auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=1145
>> comm="systemd-coredum" exe="/usr/lib/systemd/systemd-coredump" sig=4
>> [   78.004971] Process 1145(systemd-coredum) has RLIMIT_CORE set to 1
>> [   78.005066] Aborting core
>> [   78.015142] Kernel panic - not syncing: Attempted to kill init!
>> exitcode=0x00000084
>> [   78.015142]
>> [   78.016926] CPU: 0 PID: 1 Comm: systemd Not tainted 4.6.4-301.fc24.ppc64 #1
>> [   78.017726] Call Trace:
>> [   78.019154] [c00000007e6638d0] [c0000000009df0f0]
>> .dump_stack+0xa8/0xe8 (unreliable)
>> [   78.022485] [c00000007e663960] [c0000000009dd6bc] .panic+0x12c/0x2fc
>> [   78.022631] [c00000007e663a00] [c0000000000cd6a8] .do_exit+0xca8/0xcb0
>> [   78.022735] [c00000007e663ae0] [c0000000000cd77c] .do_group_exit+0x5c/0xf0
>> [   78.022815] [c00000007e663b70] [c0000000000dd4ec] .get_signal+0x3bc/0x770
>> [   78.022918] [c00000007e663c70] [c00000000001761c] .do_signal+0x4c/0x2a0
>> [   78.023021] [c00000007e663db0] [c000000000017a4c] .do_notify_resume+0xac/0xc0
>> [   78.023411] [c00000007e663e30] [c000000000009944]
>> .ret_from_except_lite+0x70/0x74
>> [   78.077889] ---[ end Kernel panic - not syncing: Attempted to kill
>> init! exitcode=0x00000084
>
> Huh.  Well, that's unfortunate.  I don't imagine the guest is trying
> to use any of those new POWER9 instructions, so I guess we must have
> broken decode of one of the existing vector instructions with which it
> shares some part of the opcode.
>
> Any chance you could trace this and work out what instruction is
> giving the first illegal instruction exception?

The following patch fixes the immediate problem for me, Nikunj will
send a more complete fix.

diff --git a/target-ppc/translate/vmx-impl.inc.c
b/target-ppc/translate/vmx-impl.inc.c
index 59ae68a..3813a26 100644
--- a/target-ppc/translate/vmx-impl.inc.c
+++ b/target-ppc/translate/vmx-impl.inc.c
@@ -672,11 +672,11 @@ GEN_VXFORM_UIMM_ENV(vcfux, 5, 12);
 GEN_VXFORM_UIMM_ENV(vcfsx, 5, 13);
 GEN_VXFORM_UIMM_ENV(vctuxs, 5, 14);
 GEN_VXFORM_UIMM_ENV(vctsxs, 5, 15);
-GEN_VXFORM_DUAL(vspltisb, PPC_NONE, PPC2_ALTIVEC_207,
+GEN_VXFORM_DUAL(vspltisb, PPC_ALTIVEC, PPC_NONE,
                       vinsertb, PPC_NONE, PPC2_ISA300);
-GEN_VXFORM_DUAL(vspltish, PPC_NONE, PPC2_ALTIVEC_207,
+GEN_VXFORM_DUAL(vspltish, PPC_ALTIVEC, PPC_NONE,
                       vinserth, PPC_NONE, PPC2_ISA300);
-GEN_VXFORM_DUAL(vspltisw, PPC_NONE, PPC2_ALTIVEC_207,
+GEN_VXFORM_DUAL(vspltisw, PPC_ALTIVEC, PPC_NONE,
                       vinsertw, PPC_NONE, PPC2_ISA300);

 static void gen_vsldoi(DisasContext *ctx)
diff --git a/target-ppc/translate/vmx-ops.inc.c
b/target-ppc/translate/vmx-ops.inc.c
index e6abeae..0e9d078 100644
--- a/target-ppc/translate/vmx-ops.inc.c
+++ b/target-ppc/translate/vmx-ops.inc.c
@@ -198,11 +198,11 @@ GEN_VXRFORM_DUAL(vcmpbfp, vcmpgtsd, 3, 15,
PPC_ALTIVEC, PPC_NONE)
 GEN_OPCODE_DUAL(name0##_##name1, 0x04, opc2, opc3, inval0, inval1, type, \
                                                                PPC_NONE)
 GEN_VXFORM_DUAL_INV(vspltisb, vinsertb, 6, 12, 0x00000000, 0x100000,
-                                               PPC2_ALTIVEC_207),
+                                               PPC_ALTIVEC),
 GEN_VXFORM_DUAL_INV(vspltish, vinserth, 6, 13, 0x00000000, 0x100000,
-                                               PPC2_ALTIVEC_207),
+                                               PPC_ALTIVEC),
 GEN_VXFORM_DUAL_INV(vspltisw, vinsertw, 6, 14, 0x00000000, 0x100000,
-                                               PPC2_ALTIVEC_207),
+                                               PPC_ALTIVEC),
 GEN_VXFORM_300_EXT(vinsertd, 6, 15, 0x100000),

 #define GEN_VXFORM_NOA(name, opc2, opc3)                                \

^ permalink raw reply related	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2016-09-29  8:34 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-09-29  7:11 [Qemu-devel] ppc64 TCG emulation broken Bharata B Rao
2016-09-29  7:47 ` David Gibson
2016-09-29  8:08   ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2016-09-29  8:15     ` Nikunj A Dadhania
2016-09-29  8:34   ` [Qemu-devel] " Bharata B Rao

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