From: "Michael S. Tsirkin" <mst@redhat.com>
To: qemu-devel@nongnu.org
Cc: Nigel Kukard <nkukard+qemu@lbsd.net>,
Peter Maydell <peter.maydell@linaro.org>,
Anthony Liguori <aliguori@amazon.com>,
Igor Mammedov <imammedo@redhat.com>
Subject: [Qemu-devel] [PULL 05/12] PCIE: fix regression with coldplugged multifunction device
Date: Tue, 4 Mar 2014 15:03:14 +0200 [thread overview]
Message-ID: <1393937889-14553-6-git-send-email-mst@redhat.com> (raw)
In-Reply-To: <1393937889-14553-1-git-send-email-mst@redhat.com>
From: Igor Mammedov <imammedo@redhat.com>
PCIE is causing asserts each time a multifunction device is added
on command line (coldplug).
This is caused by
commit a66e657e18cd9b70e9f57ae5512c07faf2bc508f
pci/pcie: convert PCIE hotplug to use hotplug-handler API
QEMU abort is caused by misplaced assertion, which should
be checked only when device is hotplugged.
Reference to regression report:
http://www.mail-archive.com/qemu-devel@nongnu.org/msg216226.html
Fixes: a66e657e18cd9b70e9f57ae5512c07faf2bc508f
Reported-By: Nigel Kukard <nkukard+qemu@lbsd.net>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/pci/pcie.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c
index 8ecd11e..02cde6f 100644
--- a/hw/pci/pcie.c
+++ b/hw/pci/pcie.c
@@ -221,29 +221,23 @@ static void pcie_cap_slot_hotplug_common(PCIDevice *hotplug_dev,
DeviceState *dev,
uint8_t **exp_cap, Error **errp)
{
- PCIDevice *pci_dev = PCI_DEVICE(dev);
*exp_cap = hotplug_dev->config + hotplug_dev->exp.exp_cap;
uint16_t sltsta = pci_get_word(*exp_cap + PCI_EXP_SLTSTA);
- PCIE_DEV_PRINTF(pci_dev, "hotplug state: %d\n", state);
+ PCIE_DEV_PRINTF(PCI_DEVICE(dev), "hotplug state: %d\n", state);
if (sltsta & PCI_EXP_SLTSTA_EIS) {
/* the slot is electromechanically locked.
* This error is propagated up to qdev and then to HMP/QMP.
*/
error_setg_errno(errp, -EBUSY, "slot is electromechanically locked");
}
-
- /* TODO: multifunction hot-plug.
- * Right now, only a device of function = 0 is allowed to be
- * hot plugged/unplugged.
- */
- assert(PCI_FUNC(pci_dev->devfn) == 0);
}
void pcie_cap_slot_hotplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
uint8_t *exp_cap;
+ PCIDevice *pci_dev = PCI_DEVICE(dev);
pcie_cap_slot_hotplug_common(PCI_DEVICE(hotplug_dev), dev, &exp_cap, errp);
@@ -256,6 +250,12 @@ void pcie_cap_slot_hotplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
return;
}
+ /* TODO: multifunction hot-plug.
+ * Right now, only a device of function = 0 is allowed to be
+ * hot plugged/unplugged.
+ */
+ assert(PCI_FUNC(pci_dev->devfn) == 0);
+
pci_word_test_and_set_mask(exp_cap + PCI_EXP_SLTSTA,
PCI_EXP_SLTSTA_PDS);
pcie_cap_slot_event(PCI_DEVICE(hotplug_dev), PCI_EXP_HP_EV_PDC);
--
MST
next prev parent reply other threads:[~2014-03-04 13:03 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-04 13:03 [Qemu-devel] [PULL 00/12] acpi,pc,pci,virtio,memory bug fixes Michael S. Tsirkin
2014-03-04 13:03 ` [Qemu-devel] [PULL 01/12] acpi-build: append description for non-hotplug Michael S. Tsirkin
2014-03-04 13:03 ` [Qemu-devel] [PULL 02/12] acpi-test-data: update expected files Michael S. Tsirkin
2014-03-04 13:03 ` [Qemu-devel] [PULL 03/12] virtio-net: remove function calls from assert Michael S. Tsirkin
2014-03-04 13:03 ` [Qemu-devel] [PULL 04/12] memory_region_present: return false if address is not found in child MemoryRegion Michael S. Tsirkin
2014-03-04 13:03 ` Michael S. Tsirkin [this message]
2014-03-04 13:03 ` [Qemu-devel] [PULL 06/12] Rework --name to use QemuOpts Michael S. Tsirkin
2014-03-04 13:03 ` [Qemu-devel] [PULL 07/12] Add 'debug-threads' suboption to --name Michael S. Tsirkin
2014-03-04 13:03 ` [Qemu-devel] [PULL 08/12] Add a 'name' parameter to qemu_thread_create Michael S. Tsirkin
2014-03-04 13:03 ` [Qemu-devel] [PULL 09/12] MAINTAINERS: drop an out of date address Michael S. Tsirkin
2014-03-04 16:05 ` Andreas Färber
2014-03-04 16:13 ` Paolo Bonzini
2014-03-04 13:03 ` [Qemu-devel] [PULL 10/12] acpi-build: partially revert dac1e93093f9306c114f410785c99aa5261539b4 Michael S. Tsirkin
2014-03-04 13:03 ` [Qemu-devel] [PULL 11/12] acpi-test: retain both asl and aml files on failure Michael S. Tsirkin
2014-03-04 13:03 ` [Qemu-devel] [PULL 12/12] acpi-test: issue errors instead of warnings when possible Michael S. Tsirkin
2014-03-04 13:07 ` [Qemu-devel] [PULL 00/12] acpi,pc,pci,virtio,memory bug fixes Peter Maydell
2014-03-04 13:11 ` Michael S. Tsirkin
2014-03-06 21:43 ` Michael S. Tsirkin
2014-03-06 21:56 ` Peter Maydell
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