Re: [PATCH 2/2] pci: correct pci config size default for cap version 2 endpoints

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On 07/20/2011 10:43 PM, Alex Williamson wrote:
On Wed, 2011-07-20 at 19:51 -0400, Donald Dutile wrote:
Corrected default size of PCIe Cap Structure from 0x3c to 0x34.
0x34 is min size for version 2 Cap Structure for an endpoint.

0x3c value failed on a real device that aligned this
structure at 0xcc, exceeding the size of the config_map[]
by 8 bytes.

Signed-off-by: Donald Dutile<ddutile@xxxxxxxxxx>
cc: Alex Williamson<alex.williamson@xxxxxxxxxx>
cc: Michael S. Tsirkin<mst@xxxxxxxxxx>
---

  hw/device-assignment.c |    4 +++-
  1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/hw/device-assignment.c b/hw/device-assignment.c
index 36ad6b0..1d2ee5d 100644
--- a/hw/device-assignment.c
+++ b/hw/device-assignment.c
@@ -1422,12 +1422,14 @@ static int assigned_device_pci_cap_init(PCIDevice *pci_dev)
          uint8_t version;
          uint16_t type, devctl, lnkcap, lnksta;
          uint32_t devcap;
-        int size = 0x3c; /* version 2 size */

          version = pci_get_byte(pci_dev->config + pos + PCI_EXP_FLAGS);
          version&= PCI_EXP_FLAGS_VERS;
          if (version == 1) {
              size = 0x14;
+	} else if (version == 2) {
+	    /* don't include slot cap/stat/ctrl 2 regs; only support endpoints */
+	    size = 0x34;
          } else if (version>  2) {
              fprintf(stderr, "Unsupported PCI express capability version %d\n",
                      version);


Does this compile?  Where is size defined now?  Also whitespace issues
with tabs.

Alex

doh! during recent workstation upgrade, i forgot to install pciutils-devel;
I didn't look at the configure output closely, and now see this file wasn't compiled!
thanks for catch.  will repost shortly.

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