diff options
Diffstat (limited to 'lib/libvfio-user.c')
| -rw-r--r-- | lib/libvfio-user.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/libvfio-user.c b/lib/libvfio-user.c index 082ac7c..af7a7bf 100644 --- a/lib/libvfio-user.c +++ b/lib/libvfio-user.c @@ -284,6 +284,10 @@ pci_config_space_size(vfu_ctx_t *vfu_ctx) return region_size(vfu_ctx, VFU_PCI_DEV_CFG_REGION_IDX); } +/* + * Accesses the non-standard part (offset >= 0x40) of the PCI configuration + * space. + */ static ssize_t handle_pci_config_space_access(vfu_ctx_t *vfu_ctx, char *buf, size_t count, loff_t pos, bool is_write) @@ -299,6 +303,10 @@ handle_pci_config_space_access(vfu_ctx_t *vfu_ctx, char *buf, size_t count, return ret; } } else { + /* + * It is legitimate to read the non-standard part of the PCI config + * space even if there are no capabilities. + */ memcpy(buf, vfu_ctx->pci.config_space->raw + pos, count); } return count; |