This is a note to let you know that I've just added the patch titled
x86/PCI: Clip bridge windows to fit in upstream windows
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-pci-clip-bridge-windows-to-fit-in-upstream-windows.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 851b09369255a91e77f56d83e3643439ac5b209a Mon Sep 17 00:00:00 2001
From: Yinghai Lu <yinghai@xxxxxxxxxx>
Date: Thu, 15 Jan 2015 16:21:49 -0600
Subject: x86/PCI: Clip bridge windows to fit in upstream windows
From: Yinghai Lu <yinghai@xxxxxxxxxx>
commit 851b09369255a91e77f56d83e3643439ac5b209a upstream.
Every PCI-PCI bridge window should fit inside an upstream bridge window
because orphaned address space is unreachable from the primary side of the
upstream bridge. If we inherit invalid bridge windows that overlap an
upstream window from firmware, clip them to fit and update the bridge
accordingly.
[bhelgaas: changelog]
Link: https://bugzilla.kernel.org/show_bug.cgi?id=85491
Reported-by: Marek Kordik <kordikmarek@xxxxxxxxx>
Tested-by: Marek Kordik <kordikmarek@xxxxxxxxx>
Fixes: 5b28541552ef ("PCI: Restrict 64-bit prefetchable bridge windows to 64-bit resources")
Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CC: Ingo Molnar <mingo@xxxxxxxxxx>
CC: "H. Peter Anvin" <hpa@xxxxxxxxx>
CC: x86@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/pci/i386.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -216,7 +216,7 @@ static void pcibios_allocate_bridge_reso
continue;
if (r->parent) /* Already allocated */
continue;
- if (!r->start || pci_claim_resource(dev, idx) < 0) {
+ if (!r->start || pci_claim_bridge_resource(dev, idx) < 0) {
/*
* Something is wrong with the region.
* Invalidate the resource to prevent
Patches currently in stable-queue which might be from yinghai@xxxxxxxxxx are
queue-3.18/pci-add-pci_bus_clip_resource-to-clip-to-fit-upstream-window.patch
queue-3.18/x86-pci-clip-bridge-windows-to-fit-in-upstream-windows.patch
queue-3.18/pci-add-pci_claim_bridge_resource-to-clip-window-if-necessary.patch
queue-3.18/pci-pass-bridge-device-not-bus-when-updating-bridge-windows.patch
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