2013-09-09 17:27:39 +02:00
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# Commit 1893cf77992cc0ce9d827a8d345437fa2494b540
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# Date 2013-09-03 16:36:47 +0100
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# Author Steven Noonan <snoonan@amazon.com>
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# Committer Ian Campbell <ian.campbell@citrix.com>
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xend: handle extended PCI configuration space when saving state
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Newer PCI standards (e.g., PCI-X 2.0 and PCIe) introduce extended
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configuration space which is larger than 256 bytes. This patch uses
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stat() to determine the amount of space used to correctly save all of
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the PCI configuration space. Resets handled by the xen-pciback driver
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don't have this problem, as that code correctly handles saving
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extended configuration space.
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Signed-off-by: Steven Noonan <snoonan@amazon.com>
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Reviewed-by: Matt Wilson <msw@amazon.com>
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[msw: adjusted commit message]
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Signed-off-by: Matt Wilson <msw@amazon.com>
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2013-10-03 00:41:46 +02:00
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--- a/tools/python/xen/util/pci.py
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+++ b/tools/python/xen/util/pci.py
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2013-09-09 17:27:39 +02:00
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@@ -521,8 +521,9 @@ def save_pci_conf_space(devs_string):
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pci_path = sysfs_mnt + SYSFS_PCI_DEVS_PATH + '/' + pci_str + \
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SYSFS_PCI_DEV_CONFIG_PATH
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fd = os.open(pci_path, os.O_RDONLY)
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+ size = os.fstat(fd).st_size
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configs = []
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- for i in range(0, 256, 4):
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+ for i in range(0, size, 4):
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configs = configs + [os.read(fd,4)]
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os.close(fd)
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pci_list = pci_list + [pci_path]
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