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| author | Steven Noonan <snoonan@amazon.com> | 2013-09-09 11:49:15 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2013-09-09 11:49:15 +0200 |
| commit | 4736f563e73f9e2808c0777deff4f2b4e75752f0 (patch) | |
| tree | 1f02c96c8ea45406ad574a27db9160fd66574261 | |
| parent | 3aa502a0315402b923d2796f20dad0009970f408 (diff) | |
| download | xen-4736f563e73f9e2808c0777deff4f2b4e75752f0.tar.gz xen-4736f563e73f9e2808c0777deff4f2b4e75752f0.tar.bz2 xen-4736f563e73f9e2808c0777deff4f2b4e75752f0.zip | |
xend: handle extended PCI configuration space when saving state
Newer PCI standards (e.g., PCI-X 2.0 and PCIe) introduce extended
configuration space which is larger than 256 bytes. This patch uses
stat() to determine the amount of space used to correctly save all of
the PCI configuration space. Resets handled by the xen-pciback driver
don't have this problem, as that code correctly handles saving
extended configuration space.
Signed-off-by: Steven Noonan <snoonan@amazon.com>
Reviewed-by: Matt Wilson <msw@amazon.com>
[msw: adjusted commit message]
Signed-off-by: Matt Wilson <msw@amazon.com>
master commit: 1893cf77992cc0ce9d827a8d345437fa2494b540
master date: 2013-09-03 16:36:47 +0100
| -rw-r--r-- | tools/python/xen/util/pci.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/python/xen/util/pci.py b/tools/python/xen/util/pci.py index 98bea1aead..307144ce31 100644 --- a/tools/python/xen/util/pci.py +++ b/tools/python/xen/util/pci.py @@ -521,8 +521,9 @@ def save_pci_conf_space(devs_string): pci_path = sysfs_mnt + SYSFS_PCI_DEVS_PATH + '/' + pci_str + \ SYSFS_PCI_DEV_CONFIG_PATH fd = os.open(pci_path, os.O_RDONLY) + size = os.fstat(fd).st_size configs = [] - for i in range(0, 256, 4): + for i in range(0, size, 4): configs = configs + [os.read(fd,4)] os.close(fd) pci_list = pci_list + [pci_path] |