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[Xense-devel] [PATCH] txt: 1/6 - "fix" xen_phys_start for 32b builds
| To: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "xense-devel@xxxxxxxxxxxxxxxxxxx" <xense-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xense-devel] [PATCH] txt: 1/6 - "fix" xen_phys_start for 32b builds |
| From: | "Cihula, Joseph" <joseph.cihula@xxxxxxxxx> |
| Date: | Mon, 19 Jan 2009 21:48:46 -0800 |
| Accept-language: | en-US |
| Acceptlanguage: | en-US |
| Cc: | "Wang, Shane" <shane.wang@xxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Delivery-date: | Mon, 19 Jan 2009 21:51:39 -0800 |
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| Thread-index: | Acl6wsKqi1WLQQ9jRBiGuPU70qcc+w== |
| Thread-topic: | [PATCH] txt: 1/6 - "fix" xen_phys_start for 32b builds |
On IA32 (32b/32b PAE) builds, set xen_phys_start (and by extension
xenheap_phys_start) to be the start of hypervisor code (instead of 0). This
reflects the actual trust/protection boundary of the hypervisor.
Signed-off-by: Joseph Cihula <joseph.cihula@xxxxxxxxx>
diff -r 8df3c145923f -r f96073a97f5c xen/arch/x86/setup.c
--- a/xen/arch/x86/setup.c Mon Jan 19 17:40:28 2009 +0000
+++ b/xen/arch/x86/setup.c Mon Jan 19 20:22:24 2009 -0800
@@ -843,7 +843,7 @@ void __init __start_xen(unsigned long mb
/* Initialise the Xen heap. */
init_xenheap_pages(xenheap_phys_start, xenheap_phys_end);
nr_pages = (xenheap_phys_end - xenheap_phys_start) >> PAGE_SHIFT;
- xenheap_phys_start = xen_phys_start;
+ xenheap_phys_start = xen_phys_start = __pa(&_start);
printk("Xen heap: %luMB (%lukB)\n",
nr_pages >> (20 - PAGE_SHIFT),
nr_pages << (PAGE_SHIFT - 10));
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