diff options
Diffstat (limited to 'src/runtime/malloc.go')
| -rw-r--r-- | src/runtime/malloc.go | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/runtime/malloc.go b/src/runtime/malloc.go index 754cfb72fb..3e86f9f64d 100644 --- a/src/runtime/malloc.go +++ b/src/runtime/malloc.go @@ -436,6 +436,10 @@ func mallocinit() { // The OS init code failed to fetch the physical page size. throw("failed to get system page size") } + if physPageSize > maxPhysPageSize { + print("system page size (", physPageSize, ") is larger than maximum page size (", maxPhysPageSize, ")\n") + throw("bad system page size") + } if physPageSize < minPhysPageSize { print("system page size (", physPageSize, ") is smaller than minimum page size (", minPhysPageSize, ")\n") throw("bad system page size") @@ -448,6 +452,13 @@ func mallocinit() { print("system huge page size (", physHugePageSize, ") must be a power of 2\n") throw("bad system huge page size") } + if physHugePageSize > maxPhysHugePageSize { + // physHugePageSize is greater than the maximum supported huge page size. + // Don't throw here, like in the other cases, since a system configured + // in this way isn't wrong, we just don't have the code to support them. + // Instead, silently set the huge page size to zero. + physHugePageSize = 0 + } if physHugePageSize != 0 { // Since physHugePageSize is a power of 2, it suffices to increase // physHugePageShift until 1<<physHugePageShift == physHugePageSize. |