________________________________________ From: Andy Lutomirski [l...@kernel.org] Sent: Thursday, March 22, 2018 09:53 >>> But your patch doesn't actually do this, since gdb will just do >>> SETREGS anyway, right? >> GDB does SETREGS on any exclusive (FS/GS) updates in inferior call.
> This means that your patch has exactly the same effect as the code in > my git tree, right? Then let's stick with something like what's in my > git tree, since it's far simpler. Difference is if flipping FS/GS multiple times, user may check the base from LDT. But I don't have strong will to keep arguing this; Markus or somebody might want to say something. The whole point as I understand is to avoid any regression on legacy ptracers. If a strong confidence lies on the simple version, let me. My first thought bought this in fact. Thanks, Chang