linux

iv/linux

History

Gavin Shan 1ae79b78bc powerpc/eeh: Fix race condition in pcibios_set_pcie_reset_state()

When asserting reset in pcibios_set_pcie_reset_state(), the PE
is enforced to (hardware) frozen state in order to drop unexpected
PCI transactions (except PCI config read/write) automatically by
hardware during reset, which would cause recursive EEH error.
However, the (software) frozen state EEH_PE_ISOLATED is missed.
When users get 0xFF from PCI config or MMIO read, EEH_PE_ISOLATED
is set in PE state retrival backend. Unfortunately, nobody (the
reset handler or the EEH recovery functinality in host) will clear
EEH_PE_ISOLATED when the PE has been passed through to guest.

The patch sets and clears EEH_PE_ISOLATED properly during reset
in function pcibios_set_pcie_reset_state() to fix the issue.

Fixes: 28158cd ("Enhance pcibios_set_pcie_reset_state()")
Reported-by: Carol L. Soto <clsoto@us.ibm.com>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Tested-by: Carol L. Soto <clsoto@us.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

2015-05-01 13:52:09 +10:00

boot

powerpc: Remove the celleb support

2015-04-07 17:15:13 +10:00

configs

powerpc: Remove the celleb support

2015-04-07 17:15:13 +10:00

crypto

crypto: powerpc - move files to fix build error

2015-03-09 21:06:19 +11:00

include

Revert "powerpc/tm: Abort syscalls in active transactions"