[Xen-devel] [PATCH 1/5 v2] libxl: Fix the bug introduced in commit "libxl: use correct type modifier for vuart_gfn"

[Bhupinder Thakur <bhupinder.thakur@xxxxxxxxxx>]

In libxl__device_vuart_add vuart_gfn is getting stored as a hex value:

> flexarray_append(ro_front, GCSPRINTF("%"PRI_xen_pfn, state->vuart_gfn));

However, xenstore reads this value as a decimal value and tries to map the
wrong address and fails.

This patch introduces a new format specifier "PRIu_xen_pfn" which formats the 
value as a
decimal value.

Signed-off-by: Bhupinder Thakur <bhupinder.thakur@xxxxxxxxxx>
Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
CC: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
CC: Wei Liu <wei.liu2@xxxxxxxxxx>
CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
CC: Julien Grall <julien.grall@xxxxxxx>
CC: Jan Beulich <jbeulich@xxxxxxxx>
CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

 tools/libxl/libxl_console.c       | 2 +-
 xen/include/public/arch-arm.h     | 1 +
 xen/include/public/arch-x86/xen.h | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/libxl/libxl_console.c b/tools/libxl/libxl_console.c
index c05dc28..6bfc0e5 100644
--- a/tools/libxl/libxl_console.c
+++ b/tools/libxl/libxl_console.c
@@ -376,7 +376,7 @@ int libxl__device_vuart_add(libxl__gc *gc, uint32_t domid,
     flexarray_append(ro_front, "port");
     flexarray_append(ro_front, GCSPRINTF("%"PRIu32, state->vuart_port));
     flexarray_append(ro_front, "ring-ref");
-    flexarray_append(ro_front, GCSPRINTF("%"PRI_xen_pfn, state->vuart_gfn));
+    flexarray_append(ro_front, GCSPRINTF("%"PRIu_xen_pfn, state->vuart_gfn));
     flexarray_append(ro_front, "limit");
     flexarray_append(ro_front, GCSPRINTF("%d", LIBXL_XENCONSOLE_LIMIT));
     flexarray_append(ro_front, "type");
diff --git a/xen/include/public/arch-arm.h b/xen/include/public/arch-arm.h
index 5708cd2..05fd11c 100644
--- a/xen/include/public/arch-arm.h
+++ b/xen/include/public/arch-arm.h
@@ -274,6 +274,7 @@ DEFINE_XEN_GUEST_HANDLE(vcpu_guest_core_regs_t);
 
 typedef uint64_t xen_pfn_t;
 #define PRI_xen_pfn PRIx64
+#define PRIu_xen_pfn PRIu64
 
 /* Maximum number of virtual CPUs in legacy multi-processor guests. */
 /* Only one. All other VCPUS must use VCPUOP_register_vcpu_info */
diff --git a/xen/include/public/arch-x86/xen.h 
b/xen/include/public/arch-x86/xen.h
index ff91831..3b0b1d6 100644
--- a/xen/include/public/arch-x86/xen.h
+++ b/xen/include/public/arch-x86/xen.h
@@ -75,6 +75,7 @@ __DeFiNe__ __DECL_REG_LO16(name) e ## name
 #ifndef __ASSEMBLY__
 typedef unsigned long xen_pfn_t;
 #define PRI_xen_pfn "lx"
+#define PRIu_xen_pfn "lu"
 #endif
 
 #define XEN_HAVE_PV_GUEST_ENTRY 1
-- 
2.7.4


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