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4e28784024
linux/arch/powerpc/platforms/powernv
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Thadeu Lima de Souza Cascardo 4e28784024 powernv/iommu: disable IOMMU bypass with param iommu=nobypass 
When IOMMU bypass is enabled, a PCI device can read and write memory
that was not mapped by the driver without causing an EEH. That might
cause memory corruption, for example.

When we disable bypass, DMA reads and writes to addresses not mapped by
the IOMMU will cause an EEH, allowing us to debug such issues.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Reviewed-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-01-23 14:02:46 +11:00
..
eeh-ioda.c powerpc/eeh: Dump PHB diag-data early 2014-12-02 11:03:26 +11:00
eeh-powernv.c powerpc/eeh: Block CFG upon frozen Shiner adapter 2014-10-15 11:27:34 +11:00
Kconfig powerpc/powernv: Enable POWER8 doorbell IPIs 2014-06-11 17:05:12 +10:00
Makefile powerpc/powernv: Invoke opal call to handle hmi. 2014-08-05 16:33:52 +10:00
opal-async.c rtc/tpo: Driver to support rtc and wakeup on PowerNV platform 2014-11-17 18:04:01 +11:00
opal-dump.c powerpc/powernv: Check OPAL dump calls exist before using 2014-09-25 23:14:36 +10:00
opal-elog.c powerpc/powernv: Check OPAL elog calls exist before using 2014-09-25 23:14:36 +10:00
opal-flash.c powerpc/powernv: Pass buffer size to OPAL validate flash call 2014-06-05 14:54:04 +10:00
opal-hmi.c powerpc/powernv: Fix the hmi event version check. 2014-11-27 09:32:52 +11:00
opal-lpc.c powerpc/powernv: Properly fix LPC debugfs endianness 2014-10-31 17:09:04 +11:00
opal-memory-errors.c powerpc/powernv: Switch powernv drivers to use machine_xxx_initcall() 2014-07-28 14:11:26 +10:00
opal-msglog.c powerpc/powernv: Fix reading of OPAL msglog 2014-06-11 17:03:36 +10:00
opal-nvram.c powerpc: Add printk levels to powernv platform code 2014-10-02 17:33:55 +10:00
opal-rtc.c rtc/tpo: Driver to support rtc and wakeup on PowerNV platform 2014-11-17 18:04:01 +11:00
opal-sensor.c hwmon: (ibmpowernv) Use platform 'id_table' to probe the device 2014-11-30 20:13:13 -08:00
opal-sysparam.c powernv: Fix permissions on sysparam sysfs entries 2014-06-11 17:03:15 +10:00
opal-tracepoints.c powerpc: Replace __get_cpu_var uses 2014-11-03 12:12:32 +11:00
opal-wrappers.S powernv/powerpc: Add winkle support for offline cpus 2014-12-15 10:46:41 +11:00
opal-xscom.c powerpc/powernv: Switch powernv drivers to use machine_xxx_initcall() 2014-07-28 14:11:26 +10:00
opal.c powerpc/powernv: Expose OPAL firmware symbol map 2014-12-15 13:21:44 +11:00
pci-ioda.c powernv/iommu: disable IOMMU bypass with param iommu=nobypass 2015-01-23 14:02:46 +11:00
pci-p5ioc2.c powerpc: Remove more traces of bootmem 2014-11-19 21:41:51 +11:00
pci.c powerpc updates for 3.19 2014-12-11 17:48:14 -08:00
pci.h powerpc/powernv: Rename alloc_m64_pe() to reserve_m64_pe() 2014-11-14 17:24:23 +11:00
powernv.h powerpc/powernv: Enable Offline CPUs to enter deep idle states 2014-12-15 10:46:40 +11:00
rng.c powerpc/powernv: Switch powernv drivers to use machine_xxx_initcall() 2014-07-28 14:11:26 +10:00
setup.c powernv/powerpc: Add winkle support for offline cpus 2014-12-15 10:46:41 +11:00
smp.c powerpc/powernv: Ignore smt-enabled on Power8 and later 2014-12-18 19:59:21 +11:00
subcore-asm.S powerpc/powernv: Add support for POWER8 split core on powernv 2014-05-28 13:35:37 +10:00
subcore.c powernv/powerpc: Add winkle support for offline cpus 2014-12-15 10:46:41 +11:00
subcore.h powernv/powerpc: Add winkle support for offline cpus 2014-12-15 10:46:41 +11:00