prctls that are architecture-specific won't work on other architectures, and arch-specific prctls that manipulate optional hardware features likewise won't work if that hardware feature is not present. The established pattern seems to be to treat such prctls as if they are unimplemented, when attempted on the wrong hardware. Cover these cases with some generic weasel words in the closet existing EINVAL clause. Signed-off-by: Dave Martin <Dave.Martin@xxxxxxx> --- man2/prctl.2 | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/man2/prctl.2 b/man2/prctl.2 index 2361b44..7f511d2 100644 --- a/man2/prctl.2 +++ b/man2/prctl.2 @@ -1616,7 +1616,8 @@ is an invalid address. .B EINVAL The value of .I option -is not recognized. +is not recognized, +or not supported on this system. .TP .B EINVAL .I option -- 2.1.4
