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We now ignore all memory beyond the 4 GB barrier in 32-bit mode.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19743 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2007-01-08 17:44:32 +00:00
parent 625f8abdb0
commit 32e2879f10
1 changed files with 6 additions and 0 deletions
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src/system/boot/platform/bios_ia32/mmu.cpp
+6
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@@ -567,6 +567,12 @@ mmu_init(void)
extMemoryBlock[i].base_addr = ROUNDUP(extMemoryBlock[i].base_addr, B_PAGE_SIZE); extMemoryBlock[i].base_addr = ROUNDUP(extMemoryBlock[i].base_addr, B_PAGE_SIZE);
extMemoryBlock[i].length = ROUNDOWN(extMemoryBlock[i].length, B_PAGE_SIZE); extMemoryBlock[i].length = ROUNDOWN(extMemoryBlock[i].length, B_PAGE_SIZE);
// we ignore all memory beyond 4 GB
if (extMemoryBlock[i].base_addr > 0xffffffffULL)
continue;
if (extMemoryBlock[i].base_addr + extMemoryBlock[i].length > 0xffffffffULL)
extMemoryBlock[i].length = 0x100000000ULL - extMemoryBlock[i].base_addr;
if (gKernelArgs.num_physical_memory_ranges > 0) { if (gKernelArgs.num_physical_memory_ranges > 0) {
// we might want to extend a previous hole // we might want to extend a previous hole
addr_t previousEnd = gKernelArgs.physical_memory_range[ addr_t previousEnd = gKernelArgs.physical_memory_range[