Hi,
On 09/05/17 15:23, Jan Beulich wrote:
Since PV kernels can't use large pages anywa, when the init-P2M support
was added it was decided to keep the implementation simple and not
align large pages in PFN space. Document this.
Signed-off-by: Jan Beulich <jbeul...@suse.com>
This is documentation so:
Release-acked-by: Julien Grall <julien.gr...@arm.com>
Cheers,
--- a/xen/include/public/elfnote.h
+++ b/xen/include/public/elfnote.h
@@ -173,7 +173,9 @@
* The (non-default) location the initial phys-to-machine map should be
* placed at by the hypervisor (Dom0) or the tools (DomU).
* The kernel must be prepared for this mapping to be established using
- * large pages, despite such otherwise not being available to guests.
+ * large pages, despite such otherwise not being available to guests. Note
+ * that these large pages may be misaligned in PFN space (they'll obviously
+ * be aligned in MFN and virtual address spaces).
* The kernel must also be able to handle the page table pages used for
* this mapping not being accessible through the initial mapping.
* (Only x86-64 supports this at present.)
--
Julien Grall
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