32bit format VHPT walker

Linux-ia64 Mike Chen 2 participants 3 messages Jan 26, 2002 – Jan 28, 2002

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Mike Chen

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2002-01-26 02:07 UTC #0 lore raw

I have a really simple question. Is 32 bit format VHPT walker available on Itanium processor? Is there a EFI or SAL call to query it?

Thanks,

Mike Chen

Thanks, according to the Intel document, the VHPT walker is optional on a given processor model. I know that the short format VHPT walker is supported on current Itanium processors. How about the long format VHPT walker? Is there operating system that uses the long format VHPT walker?

Mike

Quoting "WEI,DONG (HP-Roseville,ex1)" <[email protected]>:

Quoted 20 lines

Quoted 9 lines
-----Original Message-----
From: Mike Chen [mailto:[email protected]]
Sent: Friday, January 25, 2002 6:07 PM
To: [email protected]
Subject: [Linux-ia64] 32bit format VHPT walker
Quoted 3 lines
I have a really simple question. Is 32 bit format VHPT walker available
on Itanium processor?
Please refer to 4.1.5 of Vol 2 of the SDM.
Quoted 1 line
Is there a EFI or SAL call to query it?
No.
Dong Wei

Jim Hull

2002-01-28 18:37 UTC #2 lore raw

In reply to Mike Chen

Mike:

Although having a VHPT walker is optional, if a processor has one, it must support both short and long formats. As for whether any OS uses the long format, yes, HP-UX does.

-- Jim

Quoted 45 lines

-----Original Message-----
From: [email protected] [mailto:[email protected]]On Behalf Of [email protected]
Sent: Friday, January 25, 2002 10:17 PM
To: WEI,DONG (HP-Roseville,ex1)
Cc: 'Mike Chen'; '[email protected]'
Subject: RE: [Linux-ia64] 32bit format VHPT walker
Thanks, according to the Intel document, the VHPT walker is optional on a given processor model. I know that the short format VHPT walker is supported on current Itanium processors. How about the long format VHPT walker? Is there operating system that uses the long format VHPT walker?
Mike
Quoting "WEI,DONG (HP-Roseville,ex1)" <[email protected]>:
Quoted 13 lines
Quoted 9 lines
-----Original Message-----
From: Mike Chen [mailto:[email protected]]
Sent: Friday, January 25, 2002 6:07 PM
To: [email protected]
Subject: [Linux-ia64] 32bit format VHPT walker
Quoted 3 lines
I have a really simple question. Is 32 bit format VHPT walker available
on Itanium processor?
Quoted 7 lines
Please refer to 4.1.5 of Vol 2 of the SDM.
Quoted 1 line
Is there a EFI or SAL call to query it?
No.
Dong Wei
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