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| author | Ian Campbell <ian.campbell@citrix.com> | 2010-09-02 19:16:00 +0400 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-10-23 00:19:19 +0400 |
| commit | 9e9a5fcb04e3af077d1be32710298b852210d93f (patch) | |
| tree | 8738bdf5a6390c3f7986551bfc566a01727c57a4 /arch/x86/xen | |
| parent | 375b2a9ada6d105483aab22f1af1d727bc3c418d (diff) | |
| download | linux-9e9a5fcb04e3af077d1be32710298b852210d93f.tar.xz | |
xen: use host E820 map for dom0
When running as initial domain, get the real physical memory map from
xen using the XENMEM_machine_memory_map hypercall and use it to setup
the e820 regions.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/xen')
| -rw-r--r-- | arch/x86/xen/setup.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 7a4ab05cff8a..0ce9d58cb29d 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -149,6 +149,7 @@ char * __init xen_memory_setup(void) unsigned long extra_pages = 0; unsigned long extra_limit; int i; + int op; max_pfn = min(MAX_DOMAIN_PAGES, max_pfn); mem_end = PFN_PHYS(max_pfn); @@ -156,7 +157,10 @@ char * __init xen_memory_setup(void) memmap.nr_entries = E820MAX; set_xen_guest_handle(memmap.buffer, map); - rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap); + op = xen_initial_domain() ? + XENMEM_machine_memory_map : + XENMEM_memory_map; + rc = HYPERVISOR_memory_op(op, &memmap); if (rc == -ENOSYS) { memmap.nr_entries = 1; map[0].addr = 0ULL; @@ -235,7 +239,8 @@ char * __init xen_memory_setup(void) else extra_pages = 0; - xen_add_extra_mem(extra_pages); + if (!xen_initial_domain()) + xen_add_extra_mem(extra_pages); return "Xen"; } |