On Tue, Aug 20, 2024 at 03:06:06PM +0100, Joey Gouly wrote:
> On Tue, Aug 20, 2024 at 02:54:50PM +0100, Dave Martin wrote:
> > On Tue, Aug 20, 2024 at 10:54:41AM +0100, Joey Gouly wrote:
> > > On Mon, Aug 19, 2024 at 06:09:06PM +0100, Catalin Marinas wrote:
> > > > On Thu, Aug 15, 2024 at 04:09:26P
On Tue, Aug 20, 2024 at 02:54:50PM +0100, Dave Martin wrote:
> On Tue, Aug 20, 2024 at 10:54:41AM +0100, Joey Gouly wrote:
> > On Mon, Aug 19, 2024 at 06:09:06PM +0100, Catalin Marinas wrote:
> > > On Thu, Aug 15, 2024 at 04:09:26PM +0100, Dave P Martin wrote:
> > > > On Thu, Aug 15, 2024 at 02:18:
On Tue, Aug 20, 2024 at 10:54:41AM +0100, Joey Gouly wrote:
> On Mon, Aug 19, 2024 at 06:09:06PM +0100, Catalin Marinas wrote:
> > On Thu, Aug 15, 2024 at 04:09:26PM +0100, Dave P Martin wrote:
> > > On Thu, Aug 15, 2024 at 02:18:15PM +0100, Joey Gouly wrote:
> > > > That's a lot of words to say, o
On Mon, Aug 19, 2024 at 06:09:06PM +0100, Catalin Marinas wrote:
> On Thu, Aug 15, 2024 at 04:09:26PM +0100, Dave P Martin wrote:
> > On Thu, Aug 15, 2024 at 02:18:15PM +0100, Joey Gouly wrote:
> > > That's a lot of words to say, or ask, do you agree with the approach of
> > > only
> > > saving PO
On Thu, Aug 15, 2024 at 04:09:26PM +0100, Dave P Martin wrote:
> On Thu, Aug 15, 2024 at 02:18:15PM +0100, Joey Gouly wrote:
> > That's a lot of words to say, or ask, do you agree with the approach of only
> > saving POR_EL0 in the signal frame if num_allocated_pkeys() > 1?
> >
> > Thanks,
> > Joe
On Thu, Aug 15, 2024 at 04:09:26PM +0100, Dave Martin wrote:
> I'm coming round to the view that trying to provide absolute guarantees
> about the signal frame size is unsustainable. x86 didn't, and got away
> with it for some time... Maybe we should just get rid of the relevant
> comments in he
On Thu, Aug 15, 2024 at 02:18:15PM +0100, Joey Gouly wrote:
> Hi Catalin,
>
> On Wed, Aug 14, 2024 at 04:03:47PM +0100, Catalin Marinas wrote:
> > Hi Joey,
> >
> > On Tue, Aug 06, 2024 at 03:31:03PM +0100, Joey Gouly wrote:
> > > diff --git arch/arm64/kernel/signal.c arch/arm64/kernel/signal.c
>
Hi Catalin,
On Wed, Aug 14, 2024 at 04:03:47PM +0100, Catalin Marinas wrote:
> Hi Joey,
>
> On Tue, Aug 06, 2024 at 03:31:03PM +0100, Joey Gouly wrote:
> > diff --git arch/arm64/kernel/signal.c arch/arm64/kernel/signal.c
> > index 561986947530..ca7d4e0be275 100644
> > --- arch/arm64/kernel/signal
Hi Joey,
On Tue, Aug 06, 2024 at 03:31:03PM +0100, Joey Gouly wrote:
> diff --git arch/arm64/kernel/signal.c arch/arm64/kernel/signal.c
> index 561986947530..ca7d4e0be275 100644
> --- arch/arm64/kernel/signal.c
> +++ arch/arm64/kernel/signal.c
> @@ -1024,7 +1025,10 @@ static int setup_sigframe_lay
On Tue, Aug 06, 2024 at 03:31:03PM +0100, Joey Gouly wrote:
> On Tue, Aug 06, 2024 at 11:35:32AM +0100, Joey Gouly wrote:
> > On Thu, Aug 01, 2024 at 05:22:45PM +0100, Dave Martin wrote:
> > > On Thu, Aug 01, 2024 at 04:54:41PM +0100, Joey Gouly wrote:
> > > > On Thu, Jul 25, 2024 at 05:00:18PM +01
On Tue, Aug 06, 2024 at 11:35:32AM +0100, Joey Gouly wrote:
> On Thu, Aug 01, 2024 at 05:22:45PM +0100, Dave Martin wrote:
> > On Thu, Aug 01, 2024 at 04:54:41PM +0100, Joey Gouly wrote:
> > > On Thu, Jul 25, 2024 at 05:00:18PM +0100, Dave Martin wrote:
> > > > Hi,
> > > >
> > > > On Fri, May 03,
On Thu, Aug 01, 2024 at 05:22:45PM +0100, Dave Martin wrote:
> On Thu, Aug 01, 2024 at 04:54:41PM +0100, Joey Gouly wrote:
> > On Thu, Jul 25, 2024 at 05:00:18PM +0100, Dave Martin wrote:
> > > Hi,
> > >
> > > On Fri, May 03, 2024 at 02:01:36PM +0100, Joey Gouly wrote:
> > > > Add PKEY support to
On Thu, Aug 01, 2024 at 04:54:41PM +0100, Joey Gouly wrote:
> On Thu, Jul 25, 2024 at 05:00:18PM +0100, Dave Martin wrote:
> > Hi,
> >
> > On Fri, May 03, 2024 at 02:01:36PM +0100, Joey Gouly wrote:
> > > Add PKEY support to signals, by saving and restoring POR_EL0 from the
> > > stackframe.
> >
On Thu, Jul 25, 2024 at 05:00:18PM +0100, Dave Martin wrote:
> Hi,
>
> On Fri, May 03, 2024 at 02:01:36PM +0100, Joey Gouly wrote:
> > Add PKEY support to signals, by saving and restoring POR_EL0 from the
> > stackframe.
> >
> > Signed-off-by: Joey Gouly
> > Cc: Catalin Marinas
> > Cc: Will De
On Mon, Jul 29, 2024 at 03:27:11PM +0100, Dave Martin wrote:
> On Fri, Jul 26, 2024 at 06:39:27PM +0100, Mark Brown wrote:
> > Yes, though that would mean if we had to generate any register in there
> > we'd always have to generate at least as many entries as whatever number
> > it got assigned wh
On Fri, Jul 26, 2024 at 06:39:27PM +0100, Mark Brown wrote:
> On Fri, Jul 26, 2024 at 05:14:01PM +0100, Dave Martin wrote:
> > On Thu, Jul 25, 2024 at 07:11:41PM +0100, Mark Brown wrote:
>
> > > That'd have to be a variably sized structure with pairs of sysreg
> > > ID/value items in it I think wh
On Fri, Jul 26, 2024 at 05:14:01PM +0100, Dave Martin wrote:
> On Thu, Jul 25, 2024 at 07:11:41PM +0100, Mark Brown wrote:
> > That'd have to be a variably sized structure with pairs of sysreg
> > ID/value items in it I think which would be a bit of a pain to implement
> > but doable. The per-rec
On Thu, Jul 25, 2024 at 07:11:41PM +0100, Mark Brown wrote:
> On Thu, Jul 25, 2024 at 04:58:27PM +0100, Dave Martin wrote:
>
> > I'll post a draft patch separately, since I think the update could
> > benefit from separate discussion, but my back-of-the-envelope
> > calculation suggests that (befor
On Thu, Jul 25, 2024 at 04:58:27PM +0100, Dave Martin wrote:
> I'll post a draft patch separately, since I think the update could
> benefit from separate discussion, but my back-of-the-envelope
> calculation suggests that (before this patch) we are down to 0x90
> bytes of free space (i.e., over 96
Hi,
On Fri, May 03, 2024 at 02:01:36PM +0100, Joey Gouly wrote:
> Add PKEY support to signals, by saving and restoring POR_EL0 from the
> stackframe.
>
> Signed-off-by: Joey Gouly
> Cc: Catalin Marinas
> Cc: Will Deacon
> Reviewed-by: Mark Brown
> Acked-by: Szabolcs Nagy
> ---
> arch/arm64
On Mon, Jun 03, 2024 at 02:51:46PM +0530, Amit Daniel Kachhap wrote:
>
>
> On 5/31/24 22:09, Mark Brown wrote:
> > On Tue, May 28, 2024 at 12:26:54PM +0530, Amit Daniel Kachhap wrote:
> > > On 5/3/24 18:31, Joey Gouly wrote:
> >
> > > > +#define POE_MAGIC 0x504f4530
> > > > +struct poe_cont
On 5/3/24 18:31, Joey Gouly wrote:
> Add PKEY support to signals, by saving and restoring POR_EL0 from the
> stackframe.
>
> Signed-off-by: Joey Gouly
> Cc: Catalin Marinas
> Cc: Will Deacon
> Reviewed-by: Mark Brown
> Acked-by: Szabolcs Nagy
Reviewed-by: Anshuman Khandual
> ---
> arc
On 03/05/2024 15:01, Joey Gouly wrote:
> @@ -1020,6 +1060,15 @@ static int setup_sigframe(struct
> rt_sigframe_user_layout *user,
> __put_user_error(current->thread.fault_code, &esr_ctx->esr,
> err);
> }
>
> + if (system_supports_poe() && err == 0 && user->poe_offset) {
On Fri, May 03, 2024 at 02:01:36PM +0100, Joey Gouly wrote:
> Add PKEY support to signals, by saving and restoring POR_EL0 from the
> stackframe.
>
> Signed-off-by: Joey Gouly
> Cc: Catalin Marinas
> Cc: Will Deacon
> Reviewed-by: Mark Brown
> Acked-by: Szabolcs Nagy
Reviewed-by: Catalin Ma
On 5/31/24 22:09, Mark Brown wrote:
On Tue, May 28, 2024 at 12:26:54PM +0530, Amit Daniel Kachhap wrote:
On 5/3/24 18:31, Joey Gouly wrote:
+#define POE_MAGIC 0x504f4530
+struct poe_context {
+ struct _aarch64_ctx head;
+ __u64 por_el0;
+};
There is a comment section
On Tue, May 28, 2024 at 12:26:54PM +0530, Amit Daniel Kachhap wrote:
> On 5/3/24 18:31, Joey Gouly wrote:
> > +#define POE_MAGIC 0x504f4530
> > +struct poe_context {
> > + struct _aarch64_ctx head;
> > + __u64 por_el0;
> > +};
> There is a comment section in the beginning which mentions the
On 5/3/24 18:31, Joey Gouly wrote:
Add PKEY support to signals, by saving and restoring POR_EL0 from the
stackframe.
Signed-off-by: Joey Gouly
Cc: Catalin Marinas
Cc: Will Deacon
Reviewed-by: Mark Brown
Acked-by: Szabolcs Nagy
---
arch/arm64/include/uapi/asm/sigcontext.h | 7
a
Add PKEY support to signals, by saving and restoring POR_EL0 from the
stackframe.
Signed-off-by: Joey Gouly
Cc: Catalin Marinas
Cc: Will Deacon
Reviewed-by: Mark Brown
Acked-by: Szabolcs Nagy
---
arch/arm64/include/uapi/asm/sigcontext.h | 7
arch/arm64/kernel/signal.c |
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