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authorAnthony Liguori <anthony@codemonkey.ws>2013-10-31 16:58:32 +0100
committerAnthony Liguori <anthony@codemonkey.ws>2013-10-31 16:58:32 +0100
commitb0eb759fb244c023bc4cee60cb4336eadda3da1a (patch)
treea718301038bd68cf59824c1f9d32d7bdf8e26ed0 /docs
parentb86160555f8d1fe11d6bcec393e08e645d7e1e8d (diff)
parent742f5d2ed578bb53b2130b6da2c66de9929f4821 (diff)
Merge remote-tracking branch 'mst/tags/for_anthony' into staging
pci, pc, acpi fixes, enhancements This includes some pretty big changes: - pci master abort support by Marcel - pci IRQ API rework by Marcel - acpi generation support by myself Everything has gone through several revisions, latest versions have been on list for a while without any more comments, tested by several people. Please pull for 1.7. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Tue 15 Oct 2013 07:33:48 AM CEST using RSA key ID D28D5469 # gpg: Can't check signature: public key not found * mst/tags/for_anthony: (39 commits) ssdt-proc: update generated file ssdt: fix PBLK length i386: ACPI table generation code from seabios pc: use new api to add builtin tables acpi: add interface to access user-installed tables hpet: add API to find it pvpanic: add API to access io port ich9: APIs for pc guest info piix: APIs for pc guest info acpi/piix: add macros for acpi property names i386: define pc guest info loader: allow adding ROMs in done callbacks i386: add bios linker/loader loader: use file path size from fw_cfg.h acpi: ssdt pcihp: updat generated file acpi: pre-compiled ASL files acpi: add rules to compile ASL source i386: add ACPI table files from seabios q35: expose mmcfg size as a property q35: use macro for MCFG property name ... Message-id: 1381818560-18367-1-git-send-email-mst@redhat.com Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
Diffstat (limited to 'docs')
-rw-r--r--docs/memory.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/memory.txt b/docs/memory.txt
index feb9fe90d7..174c0d7b43 100644
--- a/docs/memory.txt
+++ b/docs/memory.txt
@@ -80,6 +80,10 @@ guest. This is done with memory_region_add_subregion_overlap(), which
allows the region to overlap any other region in the same container, and
specifies a priority that allows the core to decide which of two regions at
the same address are visible (highest wins).
+Priority values are signed, and the default value is zero. This means that
+you can use memory_region_add_subregion_overlap() both to specify a region
+that must sit 'above' any others (with a positive priority) and also a
+background region that sits 'below' others (with a negative priority).
Visibility
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