[PATCH 1/2] powerpc/64s: remove support for kernel-mode syscalls · Nicholas Piggin <npiggin@gmail.com> · 2019-08-20
[PATCH 2/2] powerpc/64s: interrupt entry use isel to prevent untrusted speculative r1 values used by the kernel · Nicholas Piggin <npiggin@gmail.com> · 2019-08-20
Re: [PATCH 1/2] powerpc/64s: remove support for kernel-mode syscalls · Nicholas Piggin <npiggin@gmail.com> · 2019-08-20

Re: [PATCH 1/2] powerpc/64s: remove support for kernel-mode syscalls

From: Nicholas Piggin <npiggin@gmail.com>
Date: 2019-08-20 05:27:21

Nicholas Piggin's on August 20, 2019 3:11 pm:

There is support for the kernel to execute the 'sc 0' instruction and
make a system call to itself. This is a relic that is unused in the
tree, therefore untested. It's also highly questionable for modules to
be doing this.

Oh I'm sorry this is not 64s, it's 64e as well, I just realised title
is wrong. I actually haven't tested 64e either.

Thanks,
Nick

`h`	back out one level
`j`	next message in thread
`k`	previous message in thread
`l`	drill in
`Esc`	close help / fold thread tree
`?`	toggle this help