Re: [PATCH v8 03/14] powerpc/vas: Define nx_fault_stamp in coprocessor_request_block

On Mon, 2020-03-23 at 10:30 +1000, Nicholas Piggin wrote:

Haren Myneni's on March 19, 2020 4:13 pm:

quoted

Kernel sets fault address and status in CRB for NX page fault on user
space address after processing page fault. User space gets the signal
and handles the fault mentioned in CRB by bringing the page in to
memory and send NX request again.

Signed-off-by: Sukadev Bhattiprolu <redacted>
Signed-off-by: Haren Myneni <haren@linux.ibm.com>
---
 arch/powerpc/include/asm/icswx.h | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/icswx.h b/arch/powerpc/include/asm/icswx.h
index 9872f85..b233d1e 100644
--- a/arch/powerpc/include/asm/icswx.h
+++ b/arch/powerpc/include/asm/icswx.h

"icswx" is not a thing anymore, after 6ff4d3e96652 ("powerpc: Remove old 
unused icswx based coprocessor support"). I guess NX is reusing some 
things from it, but it would be good to get rid of the cruft and re-name
this file and and relevant names.

NX already uses this file, so I guesss that can happen after this series.

But NX uses icswx on P8 and icswx.h has only NX specific macros right
now. 

Thanks,
Nick