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| author | David Vrabel <david.vrabel@citrix.com> | 2015-01-19 11:08:05 +0000 |
|---|---|---|
| committer | David Vrabel <david.vrabel@citrix.com> | 2015-10-23 14:20:03 +0100 |
| commit | f5775e0b6116b7e2425ccf535243b21768566d87 (patch) | |
| tree | 2d7d0aaa736c20fbf20757f244b2d233d6150fc8 /arch/x86/xen | |
| parent | f6a6cb1afe74d6ccc81aa70aa4ac3953762e7e6e (diff) | |
| download | linux-f5775e0b6116b7e2425ccf535243b21768566d87.tar.gz linux-f5775e0b6116b7e2425ccf535243b21768566d87.tar.bz2 linux-f5775e0b6116b7e2425ccf535243b21768566d87.zip | |
x86/xen: discard RAM regions above the maximum reservation
During setup, discard RAM regions that are above the maximum
reservation (instead of marking them as E820_UNUSABLE). This allows
hotplug memory to be placed at these addresses.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Diffstat (limited to 'arch/x86/xen')
| -rw-r--r-- | arch/x86/xen/setup.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 1c30e4ab1022..387b60d9bd0e 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -829,6 +829,8 @@ char * __init xen_memory_setup(void) addr = xen_e820_map[0].addr; size = xen_e820_map[0].size; while (i < xen_e820_map_entries) { + bool discard = false; + chunk_size = size; type = xen_e820_map[i].type; @@ -843,10 +845,11 @@ char * __init xen_memory_setup(void) xen_add_extra_mem(pfn_s, n_pfns); xen_max_p2m_pfn = pfn_s + n_pfns; } else - type = E820_UNUSABLE; + discard = true; } - xen_align_and_add_e820_region(addr, chunk_size, type); + if (!discard) + xen_align_and_add_e820_region(addr, chunk_size, type); addr += chunk_size; size -= chunk_size; |