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[Xen-users] Memory mapping query on Xen
| To: | xen-users@xxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-users] Memory mapping query on Xen |
| From: | "Girish Shirasat" <girish.shirasat@xxxxxxxxxxxxxx> |
| Date: | Thu, 3 May 2007 07:40:50 +0100 |
| Delivery-date: | Thu, 03 May 2007 10:25:34 -0700 |
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Hello Folks,
I am very new to Xen hence forgive me if this is a naive qn. On my board I have 1 GB of Ram. When Xen
launches Domain0 ie Linux , I reserved some high mem region for my driver usage. When I tried to access the
reseved high memory region for my driver using ioremap it failed. I then used the mfn_to_virt func, which gave me
the virtual address of the reserved high memory. Can you please help me understand how do we have a VA already assigned
to the reserved high memory region and the reason for ioremap failure.
Girish
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