From cd0b2636e5df151c7b949939a438760b2a0f0f1a Mon Sep 17 00:00:00 2001
From: Billy Laws <blaws05@gmail.com>
Date: Sun, 30 Oct 2022 16:33:16 +0000
Subject: [PATCH] Prevent truncation of big page start in GetVaRegions

---
 .../main/cpp/skyline/services/nvdrv/devices/nvhost/as_gpu.cpp  | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/src/main/cpp/skyline/services/nvdrv/devices/nvhost/as_gpu.cpp b/app/src/main/cpp/skyline/services/nvdrv/devices/nvhost/as_gpu.cpp
index 17fa98a9..9f013762 100644
--- a/app/src/main/cpp/skyline/services/nvdrv/devices/nvhost/as_gpu.cpp
+++ b/app/src/main/cpp/skyline/services/nvdrv/devices/nvhost/as_gpu.cpp
@@ -243,6 +243,7 @@ namespace skyline::service::nvdrv::device::nvhost {
         if (!vm.initialised)
             return PosixResult::InvalidArgument;
 
+        bufSize = 2 * sizeof(VaRegion);
         vaRegions = std::array<VaRegion, 2> {
             VaRegion{
                 .pageSize = VM::PageSize,
@@ -252,7 +253,7 @@ namespace skyline::service::nvdrv::device::nvhost {
             VaRegion{
                 .pageSize = vm.bigPageSize,
                 .pages = vm.bigPageAllocator->vaLimit - vm.bigPageAllocator->vaStart,
-                .offset = vm.bigPageAllocator->vaStart << vm.bigPageSizeBits,
+                .offset = static_cast<u64>(vm.bigPageAllocator->vaStart) << vm.bigPageSizeBits,
             }
         };