On Tue, Mar 31, 2015 at 8:59 AM, Denys Vlasenko wrote:
> On 03/31/2015 03:54 PM, Andy Lutomirski wrote:
>> On Tue, Mar 31, 2015 at 5:46 AM, Denys Vlasenko wrote:
>>> This is not proposed to be merged yet.
>>>
>>> Andy, this patch is in spirit of your crazy ideas of repurposing
>>> instructions
On Tue, Mar 31, 2015 at 8:59 AM, Denys Vlasenko dvlas...@redhat.com wrote:
On 03/31/2015 03:54 PM, Andy Lutomirski wrote:
On Tue, Mar 31, 2015 at 5:46 AM, Denys Vlasenko dvlas...@redhat.com wrote:
This is not proposed to be merged yet.
Andy, this patch is in spirit of your crazy ideas of
On 03/31/2015 03:54 PM, Andy Lutomirski wrote:
> On Tue, Mar 31, 2015 at 5:46 AM, Denys Vlasenko wrote:
>> This is not proposed to be merged yet.
>>
>> Andy, this patch is in spirit of your crazy ideas of repurposing
>> instructions for the roles they weren't intended for :)
>>
>> Recently I
On Tue, Mar 31, 2015 at 5:46 AM, Denys Vlasenko wrote:
> This is not proposed to be merged yet.
>
> Andy, this patch is in spirit of your crazy ideas of repurposing
> instructions for the roles they weren't intended for :)
>
> Recently I measured IRET timings and was newly "impressed"
> how slow
On Tue, 31 Mar 2015 14:46:21 +0200
Denys Vlasenko wrote:
> @@ -750,6 +750,53 @@ retint_kernel:
>* The iretq could re-enable interrupts:
>*/
> TRACE_IRQS_IRETQ
> +
> + /*
> + * Since we return to kernel, CS and SS do not need changing.
> + * Only RSP, RIP and
This is not proposed to be merged yet.
Andy, this patch is in spirit of your crazy ideas of repurposing
instructions for the roles they weren't intended for :)
Recently I measured IRET timings and was newly "impressed"
how slow it is. 200+ cycles. So I started thinking...
When we return from
This is not proposed to be merged yet.
Andy, this patch is in spirit of your crazy ideas of repurposing
instructions for the roles they weren't intended for :)
Recently I measured IRET timings and was newly impressed
how slow it is. 200+ cycles. So I started thinking...
When we return from
On Tue, 31 Mar 2015 14:46:21 +0200
Denys Vlasenko dvlas...@redhat.com wrote:
@@ -750,6 +750,53 @@ retint_kernel:
* The iretq could re-enable interrupts:
*/
TRACE_IRQS_IRETQ
+
+ /*
+ * Since we return to kernel, CS and SS do not need changing.
+ * Only
On Tue, Mar 31, 2015 at 5:46 AM, Denys Vlasenko dvlas...@redhat.com wrote:
This is not proposed to be merged yet.
Andy, this patch is in spirit of your crazy ideas of repurposing
instructions for the roles they weren't intended for :)
Recently I measured IRET timings and was newly impressed
On 03/31/2015 03:54 PM, Andy Lutomirski wrote:
On Tue, Mar 31, 2015 at 5:46 AM, Denys Vlasenko dvlas...@redhat.com wrote:
This is not proposed to be merged yet.
Andy, this patch is in spirit of your crazy ideas of repurposing
instructions for the roles they weren't intended for :)
Recently
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