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<p>Works on my CZ system:</p>
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<p>Ack-by: Tom St Denis <tom.stdenis@amd.com></p>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Christian König <deathsimple@vodafone.de><br>
<b>Sent:</b> Tuesday, January 24, 2017 09:09<br>
<b>To:</b> amd-gfx@lists.freedesktop.org<br>
<b>Subject:</b> [PATCH 2/2] drm/amdgpu: fix 64bit shift for CZ</font>
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<div class="PlainText">From: Christian König <christian.koenig@amd.com><br>
<br>
Fixes "access stolen VRAM directly on CZ", otherwise that won't<br>
work as expected with more than 4GB RAM.<br>
<br>
Signed-off-by: Christian König <christian.koenig@amd.com><br>
---<br>
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 2 +-<br>
1 file changed, 1 insertion(+), 1 deletion(-)<br>
<br>
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c<br>
index a564e89..7669b32 100644<br>
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c<br>
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c<br>
@@ -470,7 +470,7 @@ static int gmc_v8_0_mc_init(struct amdgpu_device *adev)<br>
<br>
#ifdef CONFIG_X86_64<br>
if (adev->flags & AMD_IS_APU) {<br>
- adev->mc.aper_base = RREG32(mmMC_VM_FB_OFFSET) << 22ULL;<br>
+ adev->mc.aper_base = ((u64)RREG32(mmMC_VM_FB_OFFSET)) << 22;<br>
adev->mc.aper_size = adev->mc.real_vram_size;<br>
}<br>
#endif<br>
-- <br>
2.5.0<br>
<br>
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