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33 lines
1.8 KiB
Diff
33 lines
1.8 KiB
Diff
Fix failures in AllocationTests/MappedMemoryTest.* on aarch64:
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Failing Tests (8):
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LLVM-Unit :: Support/./SupportTests/AllocationTests/MappedMemoryTest.AllocAndRelease/3
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LLVM-Unit :: Support/./SupportTests/AllocationTests/MappedMemoryTest.DuplicateNear/3
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LLVM-Unit :: Support/./SupportTests/AllocationTests/MappedMemoryTest.EnabledWrite/3
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LLVM-Unit :: Support/./SupportTests/AllocationTests/MappedMemoryTest.MultipleAllocAndRelease/3
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LLVM-Unit :: Support/./SupportTests/AllocationTests/MappedMemoryTest.SuccessiveNear/3
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LLVM-Unit :: Support/./SupportTests/AllocationTests/MappedMemoryTest.UnalignedNear/3
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LLVM-Unit :: Support/./SupportTests/AllocationTests/MappedMemoryTest.ZeroNear/3
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LLVM-Unit :: Support/./SupportTests/AllocationTests/MappedMemoryTest.ZeroSizeNear/3
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Upstream-Issue: https://bugs.llvm.org/show_bug.cgi?id=14278#c10
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--- a/lib/Support/Unix/Memory.inc
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+++ b/lib/Support/Unix/Memory.inc
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@@ -54,7 +54,7 @@
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llvm::sys::Memory::MF_EXEC:
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return PROT_READ | PROT_WRITE | PROT_EXEC;
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case llvm::sys::Memory::MF_EXEC:
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-#if defined(__FreeBSD__)
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+#if defined(__FreeBSD__) || (defined(__linux__) && (defined(__aarch64__) || defined(__powerpc64__)))
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// On PowerPC, having an executable page that has no read permission
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// can have unintended consequences. The function InvalidateInstruction-
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// Cache uses instructions dcbf and icbi, both of which are treated by
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@@ -62,6 +62,7 @@
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// executing these instructions will result in a segmentation fault.
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// Somehow, this problem is not present on Linux, but it does happen
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// on FreeBSD.
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+ // The same problem is present even on aarch64 Linux (at least on musl).
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return PROT_READ | PROT_EXEC;
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#else
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return PROT_EXEC;
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