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powerpc/eeh: Don't propagate error to guest 

When EEH error happened to the parent PE of those PEs that have
been passed through to guest, the error is propagated to guest
domain and the VFIO driver's error handlers are called. It's not
correct as the error in the host domain shouldn't be propagated
to guests and affect them.

This adds one more limitation when calling EEH error handlers.
If the PE has been passed through to guest, the error handlers
won't be called.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Gavin Shan 2016-03-04 10:53:12 +11:00 committed by Michael Ellerman
parent 67086e32b5
commit 2311cca555
1 changed files with 5 additions and 5 deletions
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10
arch/powerpc/kernel/eeh_driver.c
View File

@ -195,7 +195,7 @@ static void *eeh_report_error(void *data, void *userdata)
enum pci_ers_result rc, *res = userdata;
struct pci_driver *driver;
if (!dev || eeh_dev_removed(edev))
if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
return NULL;
dev->error_state = pci_channel_io_frozen;
@ -237,7 +237,7 @@ static void *eeh_report_mmio_enabled(void *data, void *userdata)
enum pci_ers_result rc, *res = userdata;
struct pci_driver *driver;
if (!dev || eeh_dev_removed(edev))
if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
return NULL;
driver = eeh_pcid_get(dev);
@ -277,7 +277,7 @@ static void *eeh_report_reset(void *data, void *userdata)
enum pci_ers_result rc, *res = userdata;
struct pci_driver *driver;
if (!dev || eeh_dev_removed(edev))
if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
return NULL;
dev->error_state = pci_channel_io_normal;
@ -336,7 +336,7 @@ static void *eeh_report_resume(void *data, void *userdata)
bool was_in_error;
struct pci_driver *driver;
if (!dev || eeh_dev_removed(edev))
if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
return NULL;
dev->error_state = pci_channel_io_normal;
@ -375,7 +375,7 @@ static void *eeh_report_failure(void *data, void *userdata)
struct pci_dev *dev = eeh_dev_to_pci_dev(edev);
struct pci_driver *driver;
if (!dev || eeh_dev_removed(edev))
if (!dev || eeh_dev_removed(edev) || eeh_pe_passed(edev->pe))
return NULL;
dev->error_state = pci_channel_io_perm_failure;