Searched hist:"50 e51c13" (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/arch/powerpc/include/asm/ |
| H A D | exception-64e.h | 50e51c13 Tue Jan 09 10:07:15 CST 2018 Nicholas Piggin <npiggin@gmail.com> powerpc/64: Add macros for annotating the destination of rfid/hrfid
The rfid/hrfid ((Hypervisor) Return From Interrupt) instruction is
used for switching from the kernel to userspace, and from the
hypervisor to the guest kernel. However it can and is also used for
other transitions, eg. from real mode kernel code to virtual mode
kernel code, and it's not always clear from the code what the
destination context is.
To make it clearer when reading the code, add macros which encode the
expected destination context.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
50e51c13 Tue Jan 09 10:07:15 CST 2018 Nicholas Piggin <npiggin@gmail.com> powerpc/64: Add macros for annotating the destination of rfid/hrfid
The rfid/hrfid ((Hypervisor) Return From Interrupt) instruction is
used for switching from the kernel to userspace, and from the
hypervisor to the guest kernel. However it can and is also used for
other transitions, eg. from real mode kernel code to virtual mode
kernel code, and it's not always clear from the code what the
destination context is.
To make it clearer when reading the code, add macros which encode the
expected destination context.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
|
| H A D | exception-64s.h | 50e51c13 Tue Jan 09 10:07:15 CST 2018 Nicholas Piggin <npiggin@gmail.com> powerpc/64: Add macros for annotating the destination of rfid/hrfid
The rfid/hrfid ((Hypervisor) Return From Interrupt) instruction is
used for switching from the kernel to userspace, and from the
hypervisor to the guest kernel. However it can and is also used for
other transitions, eg. from real mode kernel code to virtual mode
kernel code, and it's not always clear from the code what the
destination context is.
To make it clearer when reading the code, add macros which encode the
expected destination context.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
50e51c13 Tue Jan 09 10:07:15 CST 2018 Nicholas Piggin <npiggin@gmail.com> powerpc/64: Add macros for annotating the destination of rfid/hrfid
The rfid/hrfid ((Hypervisor) Return From Interrupt) instruction is
used for switching from the kernel to userspace, and from the
hypervisor to the guest kernel. However it can and is also used for
other transitions, eg. from real mode kernel code to virtual mode
kernel code, and it's not always clear from the code what the
destination context is.
To make it clearer when reading the code, add macros which encode the
expected destination context.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
|