mention ARCH=um

nickdesaulniers · nickdesaulniers · commit 06d3ca38980d · 2022-03-23T12:53:01.000-07:00
Link: ClangBuiltLinux/continuous-integration2#332 Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
diff --git a/readme.md b/readme.md
@@ -118,6 +118,7 @@ best-effort basis:
 * mips
 * powerpc
 * riscv
+* um (usermode)
 
 The following architectures are targetable from both LLVM and the Linux kernel
 but are untested or currently broken:
