On Tue, May 15, 2018 at 12:01:58PM +0200, Dominik Brodowski wrote:
> On Tue, May 15, 2018 at 09:22:23AM +0100, Mark Rutland wrote:
> > On Mon, May 14, 2018 at 10:24:45PM +0200, Dominik Brodowski wrote:
> > > On Mon, May 14, 2018 at 12:41:10PM +0100, Mark Rutland wrote:
> > > > I agree it would be n
On Tue, May 15, 2018 at 09:22:23AM +0100, Mark Rutland wrote:
> On Mon, May 14, 2018 at 10:24:45PM +0200, Dominik Brodowski wrote:
> > On Mon, May 14, 2018 at 12:41:10PM +0100, Mark Rutland wrote:
> > > I agree it would be nicer if it had a wrapper that took a pt_regs, even
> > > if it does nothing
On Mon, May 14, 2018 at 10:24:45PM +0200, Dominik Brodowski wrote:
> On Mon, May 14, 2018 at 12:41:10PM +0100, Mark Rutland wrote:
> > I agree it would be nicer if it had a wrapper that took a pt_regs, even
> > if it does nothing with it.
> >
> > We can't use SYSCALL_DEFINE0() due to the fault inj
On Mon, May 14, 2018 at 08:00:29PM +0200, Dominik Brodowski wrote:
> > +static void __invoke_syscall(struct pt_regs *regs, syscall_fn_t syscall_fn)
> > +{
> > + regs->regs[0] = syscall_fn(regs->regs[0], regs->regs[1],
> > + regs->regs[2], regs->regs[3],
> > +
On Mon, May 14, 2018 at 12:41:10PM +0100, Mark Rutland wrote:
> I agree it would be nicer if it had a wrapper that took a pt_regs, even
> if it does nothing with it.
>
> We can't use SYSCALL_DEFINE0() due to the fault injection muck, we'd
> need a ksys_ni_syscall() for our traps.c logic, and addin
> +static void __invoke_syscall(struct pt_regs *regs, syscall_fn_t syscall_fn)
> +{
> + regs->regs[0] = syscall_fn(regs->regs[0], regs->regs[1],
> +regs->regs[2], regs->regs[3],
> +regs->regs[4], regs->regs[5]);
> +}
Any specific
On Mon, May 14, 2018 at 12:41:10PM +0100, Mark Rutland wrote:
> On Mon, May 14, 2018 at 12:07:18PM +0100, Dave Martin wrote:
> > On Mon, May 14, 2018 at 10:46:30AM +0100, Mark Rutland wrote:
> > > As a first step towards invoking syscalls with a pt_regs argument,
> > > convert the raw syscall invoc
On Mon, May 14, 2018 at 12:07:18PM +0100, Dave Martin wrote:
> On Mon, May 14, 2018 at 10:46:30AM +0100, Mark Rutland wrote:
> > As a first step towards invoking syscalls with a pt_regs argument,
> > convert the raw syscall invocation logic to C. We end up with a bit more
> > register shuffling, bu
On Mon, May 14, 2018 at 10:46:30AM +0100, Mark Rutland wrote:
> As a first step towards invoking syscalls with a pt_regs argument,
> convert the raw syscall invocation logic to C. We end up with a bit more
> register shuffling, but the unified invocation logic means we can unify
> the tracing paths
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