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authorJake Oshins <jakeo@microsoft.com>2015-08-05 10:52:36 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-08-05 21:41:30 +0300
commit7f163a6fd957a85f7f66a129db1ad243a44399ee (patch)
tree5c72e580e6ff9d18a39005a09e906121783d4317 /include/linux/hyperv.h
parentf368ed6088ae9c1fbe1c897bb5f215ce5e63fa1e (diff)
downloadlinux-7f163a6fd957a85f7f66a129db1ad243a44399ee.tar.xz
drivers:hv: Modify hv_vmbus to search for all MMIO ranges available.
This patch changes the logic in hv_vmbus to record all of the ranges in the VM's firmware (BIOS or UEFI) that offer regions of memory-mapped I/O space for use by paravirtual front-end drivers. The old logic just found one range above 4GB and called it good. This logic will find any ranges above 1MB. It would have been possible with this patch to just use existing resource allocation functions, rather than keep track of the entire set of Hyper-V related MMIO regions in VMBus. This strategy, however, is not sufficient when the resource allocator needs to be aware of the constraints of a Hyper-V virtual machine, which is what happens in the next patch in the series. So this first patch exists to show the first steps in reworking the MMIO allocation paths for Hyper-V front-end drivers. Signed-off-by: Jake Oshins <jakeo@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/hyperv.h')
-rw-r--r--include/linux/hyperv.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 30d3a1f79450..217e14be77b9 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -1233,7 +1233,7 @@ extern bool vmbus_prep_negotiate_resp(struct icmsg_hdr *,
void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid);
-extern struct resource hyperv_mmio;
+extern struct resource *hyperv_mmio;
/*
* Negotiated version with the Host.