* [Qemu-devel] [PATCH] linux-user: fill target sigcontext struct accordingly
@ 2017-01-31 22:05 Jose Ricardo Ziviani
2017-02-01 20:43 ` Laurent Vivier
0 siblings, 1 reply; 6+ messages in thread
From: Jose Ricardo Ziviani @ 2017-01-31 22:05 UTC (permalink / raw)
To: qemu-devel; +Cc: riku.voipio, qemu-ppc
A segfault is noticed when an emulated program uses any of ucontext
regs fields. Risu detected this issue in the following operation when
handling a signal:
ucontext_t *uc = (ucontext_t*)uc;
uc->uc_mcontext.regs->nip += 4;
but this works fine:
uc->uc_mcontext.gp_regs[PT_NIP] += 4;
This patch set regs to a valid location as well as other sigcontext
fields.
Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
---
linux-user/signal.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 5064de0..8209539 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -5155,6 +5155,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
target_ulong rt_sf_addr, newsp = 0;
int i, err = 0;
#if defined(TARGET_PPC64)
+ struct target_sigcontext *sc = 0;
struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
#endif
@@ -5183,6 +5184,10 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
#if defined(TARGET_PPC64)
mctx = &rt_sf->uc.tuc_sigcontext.mcontext;
trampptr = &rt_sf->trampoline[0];
+
+ sc = &rt_sf->uc.tuc_sigcontext;
+ __put_user(h2g(mctx), &sc->regs);
+ __put_user(sig, &sc->signal);
#else
mctx = &rt_sf->uc.tuc_mcontext;
trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp;
--
2.7.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [PATCH] linux-user: fill target sigcontext struct accordingly
2017-01-31 22:05 [Qemu-devel] [PATCH] linux-user: fill target sigcontext struct accordingly Jose Ricardo Ziviani
@ 2017-02-01 20:43 ` Laurent Vivier
2017-02-13 19:32 ` joserz
2017-02-28 1:09 ` [Qemu-devel] [Qemu-ppc] " David Gibson
0 siblings, 2 replies; 6+ messages in thread
From: Laurent Vivier @ 2017-02-01 20:43 UTC (permalink / raw)
To: Jose Ricardo Ziviani, qemu-devel; +Cc: riku.voipio, qemu-ppc
Le 31/01/2017 à 23:05, Jose Ricardo Ziviani a écrit :
> A segfault is noticed when an emulated program uses any of ucontext
> regs fields. Risu detected this issue in the following operation when
> handling a signal:
> ucontext_t *uc = (ucontext_t*)uc;
> uc->uc_mcontext.regs->nip += 4;
>
> but this works fine:
> uc->uc_mcontext.gp_regs[PT_NIP] += 4;
>
> This patch set regs to a valid location as well as other sigcontext
> fields.
>
> Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
> ---
> linux-user/signal.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/linux-user/signal.c b/linux-user/signal.c
> index 5064de0..8209539 100644
> --- a/linux-user/signal.c
> +++ b/linux-user/signal.c
> @@ -5155,6 +5155,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
> target_ulong rt_sf_addr, newsp = 0;
> int i, err = 0;
> #if defined(TARGET_PPC64)
> + struct target_sigcontext *sc = 0;
> struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
> #endif
>
> @@ -5183,6 +5184,10 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
> #if defined(TARGET_PPC64)
> mctx = &rt_sf->uc.tuc_sigcontext.mcontext;
> trampptr = &rt_sf->trampoline[0];
> +
> + sc = &rt_sf->uc.tuc_sigcontext;
> + __put_user(h2g(mctx), &sc->regs);
> + __put_user(sig, &sc->signal);
> #else
> mctx = &rt_sf->uc.tuc_mcontext;
> trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp;
>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
This is correct, but QEMU and kernel implementation are really different.
In the kernel:
handle_rt_signal64()
...
frame = get_sigframe(ksig, get_tm_stackpointer(tsk),
sizeof(*frame), 0);
...
err |= setup_sigcontext(&frame->uc.uc_mcontext, tsk, ksig->sig,
NULL,
(unsigned long)ksig->ka.sa.sa_handler,
1);
static long setup_sigcontext(struct sigcontext __user *sc,
struct task_struct *tsk, int signr, sigset_t *set,
unsigned long handler, int ctx_has_vsx_region)
err |= __put_user(&sc->gp_regs, &sc->regs);
...
err |= __put_user(signr, &sc->signal);
...
According to kernel definition of ucontext:
struct ucontext {
...
#ifdef __powerpc64__
sigset_t __unused[15]; /* Allow for uc_sigmask growth */
struct sigcontext uc_mcontext; /* last for extensibility */
#else
...
}
kernel &frame->uc.uc_mcontext is qemu &rt_sf->uc.tuc_sigcontext
uc_sigcontext.mcontext doesn't exit in the kernel.
But QEMU code works because tuc_sigcontext.mcontext is where we have the
CPU registers in sigcontext:
kernel:
struct sigcontext {
unsigned long _unused[4];
int signal;
#ifdef __powerpc64__
int _pad0;
#endif
unsigned long handler;
unsigned long oldmask;
struct pt_regs __user *regs;
#ifdef __powerpc64__
elf_gregset_t gp_regs;
elf_fpregset_t fp_regs;
...
Qemu:
struct target_sigcontext {
target_ulong _unused[4];
int32_t signal;
#if defined(TARGET_PPC64)
int32_t pad0;
#endif
target_ulong handler;
target_ulong oldmask;
target_ulong regs; /* struct pt_regs __user * */
#if defined(TARGET_PPC64)
struct target_mcontext mcontext;
#endif
};
struct target_mcontext {
target_ulong mc_gregs[48];
/* Includes fpscr. */
uint64_t mc_fregs[33];
...
I think we do like that to use the same
save_user_regs()/save_user_regs() functions with PPC and PPC64... but
comparison with kernel becomes harder.
Laurent
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [PATCH] linux-user: fill target sigcontext struct accordingly
2017-02-01 20:43 ` Laurent Vivier
@ 2017-02-13 19:32 ` joserz
2017-02-28 1:09 ` [Qemu-devel] [Qemu-ppc] " David Gibson
1 sibling, 0 replies; 6+ messages in thread
From: joserz @ 2017-02-13 19:32 UTC (permalink / raw)
To: riku.voipio; +Cc: qemu-devel, qemu-ppc
Up
On Wed, Feb 01, 2017 at 09:43:57PM +0100, Laurent Vivier wrote:
> Le 31/01/2017 à 23:05, Jose Ricardo Ziviani a écrit :
> > A segfault is noticed when an emulated program uses any of ucontext
> > regs fields. Risu detected this issue in the following operation when
> > handling a signal:
> > ucontext_t *uc = (ucontext_t*)uc;
> > uc->uc_mcontext.regs->nip += 4;
> >
> > but this works fine:
> > uc->uc_mcontext.gp_regs[PT_NIP] += 4;
> >
> > This patch set regs to a valid location as well as other sigcontext
> > fields.
> >
> > Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
> > ---
> > linux-user/signal.c | 5 +++++
> > 1 file changed, 5 insertions(+)
> >
> > diff --git a/linux-user/signal.c b/linux-user/signal.c
> > index 5064de0..8209539 100644
> > --- a/linux-user/signal.c
> > +++ b/linux-user/signal.c
> > @@ -5155,6 +5155,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
> > target_ulong rt_sf_addr, newsp = 0;
> > int i, err = 0;
> > #if defined(TARGET_PPC64)
> > + struct target_sigcontext *sc = 0;
> > struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
> > #endif
> >
> > @@ -5183,6 +5184,10 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
> > #if defined(TARGET_PPC64)
> > mctx = &rt_sf->uc.tuc_sigcontext.mcontext;
> > trampptr = &rt_sf->trampoline[0];
> > +
> > + sc = &rt_sf->uc.tuc_sigcontext;
> > + __put_user(h2g(mctx), &sc->regs);
> > + __put_user(sig, &sc->signal);
> > #else
> > mctx = &rt_sf->uc.tuc_mcontext;
> > trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp;
> >
>
> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
>
> This is correct, but QEMU and kernel implementation are really different.
>
> In the kernel:
>
> handle_rt_signal64()
> ...
> frame = get_sigframe(ksig, get_tm_stackpointer(tsk),
> sizeof(*frame), 0);
> ...
> err |= setup_sigcontext(&frame->uc.uc_mcontext, tsk, ksig->sig,
> NULL,
> (unsigned long)ksig->ka.sa.sa_handler,
> 1);
>
> static long setup_sigcontext(struct sigcontext __user *sc,
> struct task_struct *tsk, int signr, sigset_t *set,
> unsigned long handler, int ctx_has_vsx_region)
>
> err |= __put_user(&sc->gp_regs, &sc->regs);
> ...
> err |= __put_user(signr, &sc->signal);
> ...
>
> According to kernel definition of ucontext:
>
> struct ucontext {
> ...
> #ifdef __powerpc64__
> sigset_t __unused[15]; /* Allow for uc_sigmask growth */
> struct sigcontext uc_mcontext; /* last for extensibility */
> #else
> ...
> }
>
> kernel &frame->uc.uc_mcontext is qemu &rt_sf->uc.tuc_sigcontext
>
> uc_sigcontext.mcontext doesn't exit in the kernel.
>
> But QEMU code works because tuc_sigcontext.mcontext is where we have the
> CPU registers in sigcontext:
>
> kernel:
>
> struct sigcontext {
> unsigned long _unused[4];
> int signal;
> #ifdef __powerpc64__
> int _pad0;
> #endif
> unsigned long handler;
> unsigned long oldmask;
> struct pt_regs __user *regs;
> #ifdef __powerpc64__
> elf_gregset_t gp_regs;
> elf_fpregset_t fp_regs;
> ...
>
> Qemu:
>
> struct target_sigcontext {
> target_ulong _unused[4];
> int32_t signal;
> #if defined(TARGET_PPC64)
> int32_t pad0;
> #endif
> target_ulong handler;
> target_ulong oldmask;
> target_ulong regs; /* struct pt_regs __user * */
> #if defined(TARGET_PPC64)
> struct target_mcontext mcontext;
> #endif
> };
>
> struct target_mcontext {
> target_ulong mc_gregs[48];
> /* Includes fpscr. */
> uint64_t mc_fregs[33];
> ...
>
> I think we do like that to use the same
> save_user_regs()/save_user_regs() functions with PPC and PPC64... but
> comparison with kernel becomes harder.
>
> Laurent
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [Qemu-ppc] [PATCH] linux-user: fill target sigcontext struct accordingly
2017-02-01 20:43 ` Laurent Vivier
2017-02-13 19:32 ` joserz
@ 2017-02-28 1:09 ` David Gibson
2017-02-28 10:22 ` Laurent Vivier
1 sibling, 1 reply; 6+ messages in thread
From: David Gibson @ 2017-02-28 1:09 UTC (permalink / raw)
To: Laurent Vivier; +Cc: Jose Ricardo Ziviani, qemu-devel, riku.voipio, qemu-ppc
[-- Attachment #1: Type: text/plain, Size: 4417 bytes --]
On Wed, Feb 01, 2017 at 09:43:57PM +0100, Laurent Vivier wrote:
> Le 31/01/2017 à 23:05, Jose Ricardo Ziviani a écrit :
> > A segfault is noticed when an emulated program uses any of ucontext
> > regs fields. Risu detected this issue in the following operation when
> > handling a signal:
> > ucontext_t *uc = (ucontext_t*)uc;
> > uc->uc_mcontext.regs->nip += 4;
> >
> > but this works fine:
> > uc->uc_mcontext.gp_regs[PT_NIP] += 4;
> >
> > This patch set regs to a valid location as well as other sigcontext
> > fields.
> >
> > Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
> > ---
> > linux-user/signal.c | 5 +++++
> > 1 file changed, 5 insertions(+)
> >
> > diff --git a/linux-user/signal.c b/linux-user/signal.c
> > index 5064de0..8209539 100644
> > --- a/linux-user/signal.c
> > +++ b/linux-user/signal.c
> > @@ -5155,6 +5155,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
> > target_ulong rt_sf_addr, newsp = 0;
> > int i, err = 0;
> > #if defined(TARGET_PPC64)
> > + struct target_sigcontext *sc = 0;
> > struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
> > #endif
> >
> > @@ -5183,6 +5184,10 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
> > #if defined(TARGET_PPC64)
> > mctx = &rt_sf->uc.tuc_sigcontext.mcontext;
> > trampptr = &rt_sf->trampoline[0];
> > +
> > + sc = &rt_sf->uc.tuc_sigcontext;
> > + __put_user(h2g(mctx), &sc->regs);
> > + __put_user(sig, &sc->signal);
> > #else
> > mctx = &rt_sf->uc.tuc_mcontext;
> > trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp;
> >
>
> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
>
> This is correct, but QEMU and kernel implementation are really
> different.
Laurent, I'm a bit clear on what the upshot is here.
Should I merge the patch above?
>
> In the kernel:
>
> handle_rt_signal64()
> ...
> frame = get_sigframe(ksig, get_tm_stackpointer(tsk),
> sizeof(*frame), 0);
> ...
> err |= setup_sigcontext(&frame->uc.uc_mcontext, tsk, ksig->sig,
> NULL,
> (unsigned long)ksig->ka.sa.sa_handler,
> 1);
>
> static long setup_sigcontext(struct sigcontext __user *sc,
> struct task_struct *tsk, int signr, sigset_t *set,
> unsigned long handler, int ctx_has_vsx_region)
>
> err |= __put_user(&sc->gp_regs, &sc->regs);
> ...
> err |= __put_user(signr, &sc->signal);
> ...
>
> According to kernel definition of ucontext:
>
> struct ucontext {
> ...
> #ifdef __powerpc64__
> sigset_t __unused[15]; /* Allow for uc_sigmask growth */
> struct sigcontext uc_mcontext; /* last for extensibility */
> #else
> ...
> }
>
> kernel &frame->uc.uc_mcontext is qemu &rt_sf->uc.tuc_sigcontext
>
> uc_sigcontext.mcontext doesn't exit in the kernel.
>
> But QEMU code works because tuc_sigcontext.mcontext is where we have the
> CPU registers in sigcontext:
>
> kernel:
>
> struct sigcontext {
> unsigned long _unused[4];
> int signal;
> #ifdef __powerpc64__
> int _pad0;
> #endif
> unsigned long handler;
> unsigned long oldmask;
> struct pt_regs __user *regs;
> #ifdef __powerpc64__
> elf_gregset_t gp_regs;
> elf_fpregset_t fp_regs;
> ...
>
> Qemu:
>
> struct target_sigcontext {
> target_ulong _unused[4];
> int32_t signal;
> #if defined(TARGET_PPC64)
> int32_t pad0;
> #endif
> target_ulong handler;
> target_ulong oldmask;
> target_ulong regs; /* struct pt_regs __user * */
> #if defined(TARGET_PPC64)
> struct target_mcontext mcontext;
> #endif
> };
>
> struct target_mcontext {
> target_ulong mc_gregs[48];
> /* Includes fpscr. */
> uint64_t mc_fregs[33];
> ...
>
> I think we do like that to use the same
> save_user_regs()/save_user_regs() functions with PPC and PPC64... but
> comparison with kernel becomes harder.
>
> Laurent
>
--
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
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [Qemu-ppc] [PATCH] linux-user: fill target sigcontext struct accordingly
2017-02-28 1:09 ` [Qemu-devel] [Qemu-ppc] " David Gibson
@ 2017-02-28 10:22 ` Laurent Vivier
2017-03-01 0:12 ` David Gibson
0 siblings, 1 reply; 6+ messages in thread
From: Laurent Vivier @ 2017-02-28 10:22 UTC (permalink / raw)
To: David Gibson; +Cc: Jose Ricardo Ziviani, qemu-devel, riku.voipio, qemu-ppc
[-- Attachment #1: Type: text/plain, Size: 2158 bytes --]
Le 28/02/2017 à 02:09, David Gibson a écrit :
> On Wed, Feb 01, 2017 at 09:43:57PM +0100, Laurent Vivier wrote:
>> Le 31/01/2017 à 23:05, Jose Ricardo Ziviani a écrit :
>>> A segfault is noticed when an emulated program uses any of ucontext
>>> regs fields. Risu detected this issue in the following operation when
>>> handling a signal:
>>> ucontext_t *uc = (ucontext_t*)uc;
>>> uc->uc_mcontext.regs->nip += 4;
>>>
>>> but this works fine:
>>> uc->uc_mcontext.gp_regs[PT_NIP] += 4;
>>>
>>> This patch set regs to a valid location as well as other sigcontext
>>> fields.
>>>
>>> Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
>>> ---
>>> linux-user/signal.c | 5 +++++
>>> 1 file changed, 5 insertions(+)
>>>
>>> diff --git a/linux-user/signal.c b/linux-user/signal.c
>>> index 5064de0..8209539 100644
>>> --- a/linux-user/signal.c
>>> +++ b/linux-user/signal.c
>>> @@ -5155,6 +5155,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
>>> target_ulong rt_sf_addr, newsp = 0;
>>> int i, err = 0;
>>> #if defined(TARGET_PPC64)
>>> + struct target_sigcontext *sc = 0;
>>> struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
>>> #endif
>>>
>>> @@ -5183,6 +5184,10 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
>>> #if defined(TARGET_PPC64)
>>> mctx = &rt_sf->uc.tuc_sigcontext.mcontext;
>>> trampptr = &rt_sf->trampoline[0];
>>> +
>>> + sc = &rt_sf->uc.tuc_sigcontext;
>>> + __put_user(h2g(mctx), &sc->regs);
>>> + __put_user(sig, &sc->signal);
>>> #else
>>> mctx = &rt_sf->uc.tuc_mcontext;
>>> trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp;
>>>
>>
>> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
>>
>> This is correct, but QEMU and kernel implementation are really
>> different.
>
Hi David,
> Laurent, I'm a bit clear on what the upshot is here.
>
> Should I merge the patch above?
I've already included this patch in a linux-user pull request a couple
of weeks ago, and it is now in the master.
So you have nothing to do :)
Thanks,
Laurent
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [Qemu-ppc] [PATCH] linux-user: fill target sigcontext struct accordingly
2017-02-28 10:22 ` Laurent Vivier
@ 2017-03-01 0:12 ` David Gibson
0 siblings, 0 replies; 6+ messages in thread
From: David Gibson @ 2017-03-01 0:12 UTC (permalink / raw)
To: Laurent Vivier; +Cc: Jose Ricardo Ziviani, qemu-devel, riku.voipio, qemu-ppc
[-- Attachment #1: Type: text/plain, Size: 2559 bytes --]
On Tue, Feb 28, 2017 at 11:22:54AM +0100, Laurent Vivier wrote:
> Le 28/02/2017 à 02:09, David Gibson a écrit :
> > On Wed, Feb 01, 2017 at 09:43:57PM +0100, Laurent Vivier wrote:
> >> Le 31/01/2017 à 23:05, Jose Ricardo Ziviani a écrit :
> >>> A segfault is noticed when an emulated program uses any of ucontext
> >>> regs fields. Risu detected this issue in the following operation when
> >>> handling a signal:
> >>> ucontext_t *uc = (ucontext_t*)uc;
> >>> uc->uc_mcontext.regs->nip += 4;
> >>>
> >>> but this works fine:
> >>> uc->uc_mcontext.gp_regs[PT_NIP] += 4;
> >>>
> >>> This patch set regs to a valid location as well as other sigcontext
> >>> fields.
> >>>
> >>> Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
> >>> ---
> >>> linux-user/signal.c | 5 +++++
> >>> 1 file changed, 5 insertions(+)
> >>>
> >>> diff --git a/linux-user/signal.c b/linux-user/signal.c
> >>> index 5064de0..8209539 100644
> >>> --- a/linux-user/signal.c
> >>> +++ b/linux-user/signal.c
> >>> @@ -5155,6 +5155,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
> >>> target_ulong rt_sf_addr, newsp = 0;
> >>> int i, err = 0;
> >>> #if defined(TARGET_PPC64)
> >>> + struct target_sigcontext *sc = 0;
> >>> struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
> >>> #endif
> >>>
> >>> @@ -5183,6 +5184,10 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
> >>> #if defined(TARGET_PPC64)
> >>> mctx = &rt_sf->uc.tuc_sigcontext.mcontext;
> >>> trampptr = &rt_sf->trampoline[0];
> >>> +
> >>> + sc = &rt_sf->uc.tuc_sigcontext;
> >>> + __put_user(h2g(mctx), &sc->regs);
> >>> + __put_user(sig, &sc->signal);
> >>> #else
> >>> mctx = &rt_sf->uc.tuc_mcontext;
> >>> trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp;
> >>>
> >>
> >> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
> >>
> >> This is correct, but QEMU and kernel implementation are really
> >> different.
> >
>
> Hi David,
>
> > Laurent, I'm a bit clear on what the upshot is here.
> >
> > Should I merge the patch above?
>
> I've already included this patch in a linux-user pull request a couple
> of weeks ago, and it is now in the master.
>
> So you have nothing to do :)
Excellent, thanks for the clarification.
--
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
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^ permalink raw reply [flat|nested] 6+ messages in thread
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-- links below jump to the message on this page --
2017-01-31 22:05 [Qemu-devel] [PATCH] linux-user: fill target sigcontext struct accordingly Jose Ricardo Ziviani
2017-02-01 20:43 ` Laurent Vivier
2017-02-13 19:32 ` joserz
2017-02-28 1:09 ` [Qemu-devel] [Qemu-ppc] " David Gibson
2017-02-28 10:22 ` Laurent Vivier
2017-03-01 0:12 ` David Gibson
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