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(parent: 222f20f) | patch
powerpc/64: Convert the syscall exit path to use RFI_TO_USER/KERNEL
authorNicholas Piggin <npiggin@gmail.com>
Tue, 9 Jan 2018 16:07:15 +0000 (03:07 +1100)
committerMichael Ellerman <mpe@ellerman.id.au>
Tue, 9 Jan 2018 16:07:31 +0000 (03:07 +1100)
commitb8e90cb7bc04a509e821e82ab6ed7a8ef11ba333
treee213537c8a4160cea7ab794cadda60564e4c8bcdtree | snapshot
parent222f20f140623ef6033491d0103ee0875fe87d35commit | diff
powerpc/64: Convert the syscall exit path to use RFI_TO_USER/KERNEL

In the syscall exit path we may be returning to user or kernel
context. We already have a test for that, because we conditionally
restore r13. So use that existing test and branch, and bifurcate the
return based on that.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/kernel/entry_64.S diff | blob | history
Domain: System / Kernel; Licenses: GPL-2.0;