From dc91c728fddc29dfed1ae96f6807216b5f42d3a1 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Thu, 29 Sep 2011 12:26:19 +0100 Subject: [PATCH] xen: allow extra memory to be in multiple regions Allow the extra memory (used by the balloon driver) to be in multiple regions (typically two regions, one for low memory and one for high memory). This allows the balloon driver to increase the number of available low pages (if the initial number if pages is small). As a side effect, the algorithm for building the e820 memory map is simpler and more obviously correct as the map supplied by the hypervisor is (almost) used as is (in particular, all reserved regions and gaps are preserved). Only RAM regions are altered and RAM regions above max_pfn + extra_pages are marked as unused (the region is split in two if necessary). Signed-off-by: David Vrabel Signed-off-by: Konrad Rzeszutek Wilk --- Reading git-format-patch failed