On Thu, Jul 12, 2007 at 04:27:46AM +0200, Peter Stuge wrote:
On Thu, Jul 12, 2007 at 03:44:23AM +0200, Uwe Hermann wrote:
Btw, why does die() do an endless loop around hlt()? Is there a
reason a hlt() will _not_ immediately halt the CPU? Can that
happen?
It should halt, but the CPU may
* Uwe Hermann [EMAIL PROTECTED] [070712 15:06]:
Hm, but given your above explanations that the hlt() may not really
completely halt, I'd say that we really should move the loop into
hlt(). When I call hlt() from my code I _expect_ a full halt, I don't
want _any_ other code exectuted.
It's
On Thursday 12 July 2007 15:23, Stefan Reinauer wrote:
* Uwe Hermann [EMAIL PROTECTED] [070712 15:06]:
Hm, but given your above explanations that the hlt() may not really
completely halt, I'd say that we really should move the loop into
hlt(). When I call hlt() from my code I _expect_ a
* Juergen Beisert [EMAIL PROTECTED] [070712 15:57]:
When no interrupt, reset, NMI or SMI occures the hlt opcode let the CPU
sleep forever.
Do we are using interrupts in LBv3?
I guess we can not guarantee that there is no NMI.
--
coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br.
On Thu, Jul 12, 2007 at 03:06:57PM +0200, Uwe Hermann wrote:
If so, shall we move the loop into hlt() itself?
I don't think so. hlt() is just a C wrapper around the instruction.
Hm, but given your above explanations that the hlt() may not really
completely halt, I'd say that we really
On Thu, Jul 12, 2007 at 05:47:16PM +0200, Peter Stuge wrote:
Until we've looked into it further I think looping in die() is good.
Yes, thanks for the clarifications.
Eventually I imagine building a panic room into die() so that
Yep, surely a nice idea (should be a Kconfig option,
See patch.
Having an extra file just for the tiny hlt() is really not required.
Btw, why does die() do an endless loop around hlt()? Is there a reason
a hlt() will _not_ immediately halt the CPU? Can that happen?
If so, shall we move the loop into hlt() itself?
Uwe.
--
On Thu, Jul 12, 2007 at 03:44:23AM +0200, Uwe Hermann wrote:
Btw, why does die() do an endless loop around hlt()? Is there a
reason a hlt() will _not_ immediately halt the CPU? Can that
happen?
It should halt, but the CPU may wake up again and continue executing
if an interrupt arrives. All
