diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2021-11-11 14:08:56 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-11-15 11:10:11 -0500 |
| commit | 81124b3c7a5dae34881cd8cd9631f125da81ef97 (patch) | |
| tree | 4ae4132ee3bbcc213bd3cde29d279fc124d7736c /hw/pci | |
| parent | d5daff7d312653b92f23c7a8e198090b32b8dae6 (diff) | |
pcie: add power indicator blink check
Refuse to push the attention button in case the guest is busy with some
hotplug operation (as indicated by the power indicator blinking).
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20211111130859.1171890-4-kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/pci')
| -rw-r--r-- | hw/pci/pcie.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c index 13d11a57c7..b92dbff118 100644 --- a/hw/pci/pcie.c +++ b/hw/pci/pcie.c @@ -506,6 +506,7 @@ void pcie_cap_slot_unplug_request_cb(HotplugHandler *hotplug_dev, PCIDevice *hotplug_pdev = PCI_DEVICE(hotplug_dev); uint8_t *exp_cap = hotplug_pdev->config + hotplug_pdev->exp.exp_cap; uint32_t sltcap = pci_get_word(exp_cap + PCI_EXP_SLTCAP); + uint16_t sltctl = pci_get_word(exp_cap + PCI_EXP_SLTCTL); /* Check if hot-unplug is disabled on the slot */ if ((sltcap & PCI_EXP_SLTCAP_HPC) == 0) { @@ -521,6 +522,12 @@ void pcie_cap_slot_unplug_request_cb(HotplugHandler *hotplug_dev, return; } + if ((sltctl & PCI_EXP_SLTCTL_PIC) == PCI_EXP_SLTCTL_PWR_IND_BLINK) { + error_setg(errp, "Hot-unplug failed: " + "guest is busy (power indicator blinking)"); + return; + } + dev->pending_deleted_event = true; /* In case user cancel the operation of multi-function hot-add, |