Re: [PATCH v6 04/17] powerpc/vas: Add platform specific user window operations

PowerNV uses registers to open/close VAS windows, and getting the
paste address. Whereas the hypervisor calls are used on PowerVM.

This patch adds the platform specific user space window operations
and register with the common VAS user space interface.

Signed-off-by: Haren Myneni <haren@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
---
 arch/powerpc/include/asm/vas.h              | 16 +++++--
 arch/powerpc/platforms/book3s/vas-api.c     | 53 +++++++++++++--------
 arch/powerpc/platforms/powernv/vas-window.c | 45 ++++++++++++++++-
 arch/powerpc/platforms/powernv/vas.h        |  2 +
 4 files changed, 91 insertions(+), 25 deletions(-)

diff --git a/arch/powerpc/include/asm/vas.h b/arch/powerpc/include/asm/vas.h
index 6076adf9ab4f..163a8bb85d02 100644
--- a/arch/powerpc/include/asm/vas.h
+++ b/arch/powerpc/include/asm/vas.h

@@ -5,6 +5,7 @@
 
 #ifndef _ASM_POWERPC_VAS_H
 #define _ASM_POWERPC_VAS_H
+#include <uapi/asm/vas-api.h>
 
 struct vas_window;
 

@@ -48,6 +49,16 @@ enum vas_cop_type {
 	VAS_COP_TYPE_MAX,
 };
 
+/*
+ * User space window operations used for powernv and powerVM
+ */
+struct vas_user_win_ops {
+	struct vas_window * (*open_win)(int vas_id, u64 flags,
+				enum vas_cop_type);