MGS-3159 [#imx-700] fix kernel panic for x11 stress test
when gpu memory is from virtual system pool, the physical address will become invalid, driver should enable mmu mapping accordingly. but current kernel driver return the zero address with default value, this mistake will cause gpu write into the wrong memory from zero. this fix mark the invalid address for the virtual memory. Date: Aug 06, 2017 Signed-off-by: Xianzhong <xianzhong.li@nxp.com> Reviewed-by: Yuchou Gan <yuchou.gan@nxp.com> Reviewed-by: Yong Gan <yong.gan@nxp.com> Tested-by: Jason Liu <jason.hui.liu@nxp.com>steinar/wifi_calib_4_9_kernel
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2c32aec9f6
commit
54b96f806b
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@ -1786,6 +1786,12 @@ gckVIDMEM_Lock(
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pageMask = (gctUINT32)pageSize - 1;
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*Address += (gctUINT32)physicalAddress & pageMask;
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/* Need mark invalid address for virtual memory */
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if (node->Virtual.contiguous == gcvFALSE)
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{
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physicalAddress = gcvINVALID_ADDRESS;
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}
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}
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#endif
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}
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