nefarius/qxl-wddm-dod
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qxl-wddm-dod: Fix unmapping of physical memory

Browse Source 
https://bugzilla.redhat.com/show_bug.cgi?id=1454866
Due to wrong addresses passed to class driver, it never does
unmapping of physical memory, causing a leak of virtual address range.
On x86 systems the device fails to start due to failure to
map physical memory range after 10-50 cycles of disable-enable.

Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Acked-by: Frediano Ziglio <fziglio@redhat.com>
This commit is contained in:
yuri.benditovich@daynix.com 2017-05-25 16:06:37 +03:00 committed by Frediano Ziglio
parent 1a81d6d31f
commit 9b55ed7041
1 changed files with 4 additions and 4 deletions
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8
qxldod/QxlDod.cpp
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@ -3551,24 +3551,24 @@ void QxlDevice::UnmapMemory(void)
PDXGKRNL_INTERFACE pDxgkInterface = m_pQxlDod->GetDxgkInterface();
if (m_IoMapped && m_IoBase)
{
pDxgkInterface->DxgkCbUnmapMemory( pDxgkInterface->DeviceHandle, &m_IoBase);
pDxgkInterface->DxgkCbUnmapMemory( pDxgkInterface->DeviceHandle, m_IoBase);
}
m_IoBase = NULL;
if (m_RomHdr)
{
pDxgkInterface->DxgkCbUnmapMemory( pDxgkInterface->DeviceHandle, &m_RomHdr);
pDxgkInterface->DxgkCbUnmapMemory( pDxgkInterface->DeviceHandle, m_RomHdr);
m_RomHdr = NULL;
}
if (m_RamStart)
{
pDxgkInterface->DxgkCbUnmapMemory( pDxgkInterface->DeviceHandle, &m_RamStart);
pDxgkInterface->DxgkCbUnmapMemory( pDxgkInterface->DeviceHandle, m_RamStart);
m_RamStart = NULL;
}
if (m_VRamStart)
{
pDxgkInterface->DxgkCbUnmapMemory( pDxgkInterface->DeviceHandle, &m_VRamStart);
pDxgkInterface->DxgkCbUnmapMemory( pDxgkInterface->DeviceHandle, m_VRamStart);
m_VRamStart = NULL;
}
}