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From: Scott Parish <srparish@us.ibm.com>
To: xen-devel@lists.xensource.com
Subject: understanding __linear_l2_table and friends
Date: Tue, 19 Apr 2005 23:03:51 +0000	[thread overview]
Message-ID: <20050419230351.GA30256@us.ibm.com> (raw)

I was trying to understand the states behind domain creation, but i'm
having troubles getting past this. Would someone mind saying a few
words about what these are and (if still needed) why these calculations
work for that?

xen/include/asm-x86/page.h:
   #define linear_l1_table                                                 \
       ((l1_pgentry_t *)(LINEAR_PT_VIRT_START))
   #define __linear_l2_table                                                 \
       ((l2_pgentry_t *)(LINEAR_PT_VIRT_START +                            \
                        (LINEAR_PT_VIRT_START >> (PAGETABLE_ORDER<<0))))
   #define __linear_l3_table                                                 \
       ((l3_pgentry_t *)(LINEAR_PT_VIRT_START +                            \
                        (LINEAR_PT_VIRT_START >> (PAGETABLE_ORDER<<0)) +   \
                        (LINEAR_PT_VIRT_START >> (PAGETABLE_ORDER<<1))))
   #define __linear_l4_table                                                 \
       ((l4_pgentry_t *)(LINEAR_PT_VIRT_START +                            \
                        (LINEAR_PT_VIRT_START >> (PAGETABLE_ORDER<<0)) +   \
                        (LINEAR_PT_VIRT_START >> (PAGETABLE_ORDER<<1)) +   \
                        (LINEAR_PT_VIRT_START >> (PAGETABLE_ORDER<<2))))
   
Thanks!
sRp

-- 
Scott Parish

             reply	other threads:[~2005-04-19 23:03 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-19 23:03 Scott Parish [this message]
2005-04-20 10:05 ` understanding __linear_l2_table and friends Keir Fraser
2005-04-20 16:06   ` Gerd Knorr
2005-04-20 19:46   ` Scott Parish
  -- strict thread matches above, loose matches on Subject: below --
2005-04-20 16:25 Ian Pratt
2005-04-20 16:31 ` Keir Fraser
2005-04-20 18:53 Ian Pratt
2005-04-20 19:14 ` Gerd Knorr
2005-04-20 20:27 Ian Pratt
2005-04-20 21:38 ` Gerd Knorr
2005-04-20 22:10   ` Ian Pratt
2005-04-21 13:51 Ian Pratt
2005-04-21 19:42 ` Gerd Knorr
2005-04-22 11:04 ` Andi Kleen
2005-04-22 20:47   ` Kip Macy
2005-04-23 15:08     ` Andi Kleen
2005-04-23 15:13       ` Wim Coekaerts
2005-04-23 15:28         ` Andi Kleen
2005-04-24 19:55           ` Gerd Knorr
2005-04-25  0:41             ` David Hopwood
2005-04-25  0:46               ` Mark Williamson
2005-04-25  2:53                 ` David Hopwood
2005-04-21 21:13 Ian Pratt

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