diff --git a/lib/std/Io/Threaded.zig b/lib/std/Io/Threaded.zig
index f0562504fd5e4b833ed19ddea38638b0824bd5f1..918b0f43f96ce4e64f9e10311b0e4c93a5de48f3 100644
--- a/lib/std/Io/Threaded.zig
+++ b/lib/std/Io/Threaded.zig
@@ -16796,6 +16796,7 @@ fn createFileMap(
                 .OVERFLOW => return error.Unseekable,
                 .BADF => return errnoBug(err), // Always a race condition.
                 .INVAL => return errnoBug(err), // Invalid parameters to mmap()
+                .OPNOTSUPP => return errnoBug(err), // Bad flags with MAP.SHARED_VALIDATE on Linux.
                 else => return posix.unexpectedErrno(err),
             }
         };
diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index f5868f71e9af718e2464e03a9e241f95f104ae89..501ba44557b4a817d7de516795bd4ee4d3361c24 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -146,6 +146,7 @@ pub const MAP_TYPE = enum(u4) {
     SHARED = 0x01,
     PRIVATE = 0x02,
     SHARED_VALIDATE = 0x03,
+    DROPPABLE = 0x08,
 };
 
 pub const MAP = switch (native_arch) {
diff --git a/src/codegen/llvm.zig b/src/codegen/llvm.zig
index 358d4ac469df1db0a3c7c8b507635f696797725e..26369d2ce98193f191a1d27fd96d58a569cc4fd3 100644
--- a/src/codegen/llvm.zig
+++ b/src/codegen/llvm.zig
@@ -12608,8 +12608,7 @@ fn ccAbiPromoteInt(cc: std.builtin.CallingConvention, zcu: *Zcu, ty: Type) ?std.
     }
     const int_info = switch (ty.zigTypeTag(zcu)) {
         .bool => Type.u1.intInfo(zcu),
-        .int, .@"enum", .error_set => ty.intInfo(zcu),
-        else => return null,
+        else => if (ty.isAbiInt(zcu)) ty.intInfo(zcu) else return null,
     };
     return switch (target.os.tag) {
         .driverkit, .ios, .maccatalyst, .macos, .watchos, .tvos, .visionos => switch (int_info.bits) {