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Commit a4c4bff1 authored by Sushmita Susheelendra's avatar Sushmita Susheelendra
Browse files

msm: kgsl: Enable guard page for GPUOBJ_IMPORT ioctl 



The guard page should be enabled on the gpuobj
import path to ensure allocations that are mapped
are safe from the UCHE overfetch bug.

CRs-Fixed: 975219
Change-Id: I42b7046ce3d314ec21c8fb03ef4fbbcdb094d8cf
Signed-off-by: default avatarSushmita Susheelendra <ssusheel@codeaurora.org>
parent ea5788e6

drivers/gpu/msm/kgsl.c

+4 −0
Original line number Diff line number Diff line
@@ -2252,6 +2252,7 @@ long kgsl_ioctl_gpuobj_import(struct kgsl_device_private *dev_priv, 
	struct kgsl_gpuobj_import *param = data;

	struct kgsl_mem_entry *entry;

	int ret, fd = -1;

	struct kgsl_mmu *mmu = &dev_priv->device->mmu;



	entry = kgsl_mem_entry_create();

	if (entry == NULL)
@@ -2266,6 +2267,9 @@ long kgsl_ioctl_gpuobj_import(struct kgsl_device_private *dev_priv, 


	entry->memdesc.flags = param->flags;



	if (MMU_FEATURE(mmu, KGSL_MMU_NEED_GUARD_PAGE))

		entry->memdesc.priv |= KGSL_MEMDESC_GUARD_PAGE;



	if (param->type == KGSL_USER_MEM_TYPE_ADDR)

		ret = _gpuobj_map_useraddr(dev_priv->device, private->pagetable,

			entry, param);