From: John Hodge (sonata) <tpg@mutabah.net>
Date: Sun, 25 Nov 2012 11:08:38 +0000 (+0800)
Subject: Kernel/x86_64 - Fixed MM_AllocDMA off by `n` pages in PAddr ret
X-Git-Tag: rel0.15~652
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=8e6c492206780952bfc81a6223e05dab33699566;p=tpg%2Facess2.git

Kernel/x86_64 - Fixed MM_AllocDMA off by `n` pages in PAddr ret
---

diff --git a/KernelLand/Kernel/arch/x86_64/mm_virt.c b/KernelLand/Kernel/arch/x86_64/mm_virt.c
index 0953cbf8..e1e59c08 100644
--- a/KernelLand/Kernel/arch/x86_64/mm_virt.c
+++ b/KernelLand/Kernel/arch/x86_64/mm_virt.c
@@ -849,6 +849,7 @@ tVAddr MM_AllocDMA(int Pages, int MaxBits, tPAddr *PhysAddr)
 	
 	// Allocated successfully, now map
 	ret = MM_MapHWPages(phys, Pages);
+	*PhysAddr = phys;
 	// MapHWPages references the pages, so deref them back down to 1
 	for(;Pages--;phys+=0x1000)
 		MM_DerefPhys(phys);
@@ -857,7 +858,6 @@ tVAddr MM_AllocDMA(int Pages, int MaxBits, tPAddr *PhysAddr)
 		return 0;
 	}
 	
-	*PhysAddr = phys;
 	return ret;
 }