Re: [PATCH] ia64: fix user_stack_pointer() for ptrace()

2021-03-31 Thread Sergei Trofimovich
On Wed, 31 Mar 2021 17:49:08 -0700 Andrew Morton wrote: > On Wed, 31 Mar 2021 09:44:47 +0100 Sergei Trofimovich > wrote: > > > ia64 has two stacks: > > - memory stack (or stack), pointed at by by r12 > > - register backing store (register stack), pointed at > > ar.bsp/ar.bspstore with compli

Re: [PATCH] ia64: fix user_stack_pointer() for ptrace()

2021-03-31 Thread Andrew Morton
On Wed, 31 Mar 2021 09:44:47 +0100 Sergei Trofimovich wrote: > ia64 has two stacks: > - memory stack (or stack), pointed at by by r12 > - register backing store (register stack), pointed at > ar.bsp/ar.bspstore with complications around dirty > register frame on CPU. > > In https://bugs.gent

[PATCH] ia64: fix user_stack_pointer() for ptrace()

2021-03-31 Thread Sergei Trofimovich
ia64 has two stacks: - memory stack (or stack), pointed at by by r12 - register backing store (register stack), pointed at ar.bsp/ar.bspstore with complications around dirty register frame on CPU. In https://bugs.gentoo.org/769614 Dmitry noticed that PTRACE_GET_SYSCALL_INFO returns register st