[PATCH] D98732: scudo: Allow TBI to be disabled on Linux with a macro.
Peter Collingbourne via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Mar 16 12:56:49 PDT 2021
This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGdb36d882ed18: scudo: Allow TBI to be disabled on Linux with a macro. (authored by pcc).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D98732/new/
https://reviews.llvm.org/D98732
Files:
compiler-rt/lib/scudo/standalone/memtag.h
Index: compiler-rt/lib/scudo/standalone/memtag.h
===================================================================
--- compiler-rt/lib/scudo/standalone/memtag.h
+++ compiler-rt/lib/scudo/standalone/memtag.h
@@ -26,7 +26,7 @@
// We assume that Top-Byte Ignore is enabled if the architecture supports memory
// tagging. Not all operating systems enable TBI, so we only claim architectural
// support for memory tagging if the operating system enables TBI.
-#if SCUDO_LINUX
+#if SCUDO_LINUX && !defined(SCUDO_DISABLE_TBI)
inline constexpr bool archSupportsMemoryTagging() { return true; }
#else
inline constexpr bool archSupportsMemoryTagging() { return false; }
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