From: Stefano Stabellini Date: Mon, 21 May 2012 15:54:10 +0000 (+0100) Subject: xen: do not map the same GSI twice in PVHVM guests. X-Git-Tag: v3.5-rc1~89^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=68c2c39a76b094e9b2773e5846424ea674bf2c46;p=pandora-kernel.git xen: do not map the same GSI twice in PVHVM guests. PV on HVM guests map GSIs into event channels. At restore time the event channels are resumed by restore_pirqs. Device drivers might try to register the same GSI again through ACPI at restore time, but the GSI has already been mapped and bound by restore_pirqs. This patch detects these situations and avoids mapping the same GSI multiple times. Without this patch we get: (XEN) irq.c:2235: dom4: pirq 23 or emuirq 28 already mapped and waste a pirq. CC: stable@kernel.org Signed-off-by: Stefano Stabellini Signed-off-by: Konrad Rzeszutek Wilk --- Reading git-diff-tree failed