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[Bionic,17/18] powerpc/powernv/ioda2: Add 256M IOMMU page size to the default POWER8 case

Message ID 20181031150931.16284-18-joserz@linux.ibm.com
State New
Headers show
Series NVIDIA GPU passthrough - part I | expand

Commit Message

Jose Ricardo Ziviani Oct. 31, 2018, 3:09 p.m. UTC 
From: Alexey Kardashevskiy <aik@ozlabs.ru>

BugLink: https://bugs.launchpad.net/qemu-kvm/+bug/1800649

The sketchy bypass uses 256M pages so add this page size as well.

This should cause no behavioral change but will be used later.

Fixes: 477afd6ea6 "powerpc/ioda: Use ibm,supported-tce-sizes for IOMMU page size mask"
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
(cherry picked from commit 00c376fdd7ed6cc083da3a3c51a63a75f270d647)
Signed-off-by: Jose Ricardo Ziviani <joserz@linux.ibm.com>
---
 arch/powerpc/platforms/powernv/pci-ioda.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index a4a84f1da2a1..e3e87dbde839 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -2917,7 +2917,7 @@  static unsigned long pnv_ioda_parse_tce_sizes(struct pnv_phb *phb)
 		/* Add 16M for POWER8 by default */
 		if (cpu_has_feature(CPU_FTR_ARCH_207S) &&
 				!cpu_has_feature(CPU_FTR_ARCH_300))
-			mask |= SZ_16M;
+			mask |= SZ_16M | SZ_256M;
 		return mask;
 	}