kernel/linux.git/arch/powerpc/lib/error-inject.c, branch linux-5.9.yLinux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=linux-5.9.y2018-10-20T02:26:43+00:00powerpc: Add support for function error injection2018-10-20T02:26:43+00:00Naveen N. Raonaveen.n.rao@linux.vnet.ibm.com2018-06-07T09:52:02+00:00urn:sha1:7cd01b08d35f1b7d55686ed8cd57c94d3406ec8f
We implement regs_set_return_value() and override_function_with_return()
for this purpose.
On powerpc, a return from a function (blr) just branches to the location
contained in the link register. So, we can just update pt_regs rather
than redirecting execution to a dummy function that returns.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>