Gavin Shan 5cfb20b96f powerpc/eeh: Emulate EEH recovery for VFIO devices ... When enabling EEH functionality on passed through devices (PE) with VFIO, the devices in the PE would be removed permanently from guest side. In that case, the PE remains frozen state. When returning PE to host, or restarting the guest again, we had mechanism unfreezing the PE by clearing PESTA/B frozen bits. However, that's not enough for some adapters, which are indicated as following "lspci" shows. Those adapters require hot reset on the parent bus to bring their firmware back to workable state. Otherwise, those adaptrs won't be operative and the host (for returning case) or the guest will fail to load the drivers for those adapters without exception. 0000:01:00.0 Ethernet controller: Emulex Corporation OneConnect \ 10Gb NIC (be3) (rev 02) 0000:01:00.0 0200: 19a2:0710 (rev 02) 0001:03:00.0 Ethernet controller: Emulex Corporation OneConnect \ NIC (Lancer) (rev 10) 0001:03:00.0 0200: 10df:e220 (rev 10) The patch adds mechanism to emulate EEH recovery (for hot reset on parent PCI bus) on 3 gates to fix the issue: open/release one adapter of the PE, enable EEH functionality on one adapter of the PE. Reported-by: Murilo Fossa Vicentini <muvic@br.ibm.com> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2014-09-30 17:15:18 +10:00
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asm	powerpc/eeh: Emulate EEH recovery for VFIO devices	2014-09-30 17:15:18 +10:00
uapi/asm	powerpc: Wire up sys_seccomp(), sys_getrandom() and sys_memfd_create()	2014-09-09 19:02:47 +10:00