* [Linux-ia64] psr rt bit
@ 2002-10-31 16:20 Mario Smarduch
2002-10-31 18:08 ` David Mosberger
0 siblings, 1 reply; 2+ messages in thread
From: Mario Smarduch @ 2002-10-31 16:20 UTC (permalink / raw)
To: linux-ia64
In head.S ipsr 'rt' bit along with other bits is set before rfi as the
initialization
goes to virtual mode. As the 'rfi' implicitly updates the 'psr' will
that cause
problems if 'rsc' is not in lazy mode? Is it assumed that 'rsc' is in
lazy mode
by the time _start runs?
- mario.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Linux-ia64] psr rt bit
2002-10-31 16:20 [Linux-ia64] psr rt bit Mario Smarduch
@ 2002-10-31 18:08 ` David Mosberger
0 siblings, 0 replies; 2+ messages in thread
From: David Mosberger @ 2002-10-31 18:08 UTC (permalink / raw)
To: linux-ia64
>>>>> On Thu, 31 Oct 2002 10:20:49 -0600, Mario Smarduch <cms063@email.mot.com> said:
Mario> In head.S ipsr 'rt' bit along with other bits is set before
Mario> rfi as the initialization goes to virtual mode. As the 'rfi'
Mario> implicitly updates the 'psr' will that cause problems if
Mario> 'rsc' is not in lazy mode?
Yes.
Mario> Is it assumed that 'rsc' is in lazy mode by the time _start
Mario> runs?
Yes. SAL Section 3.2.5 guarantees that ar.rsc is set to "enforced
lazy mode, little-endian".
--david
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