[PATCH 1/4 v3] libxl: Fix the bug introduced in commit "libxl: use correct type modifier for vuart_gfn"

[PATCH 1/4 v3] libxl: Fix the bug introduced in commit "libxl: use correct type modifier for vuart_gfn"

[Bhupinder Thakur]

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@linaro.org>
Acked-by: Wei Liu <wei.liu2@citrix.com>
---
CC: Ian Jackson <ian.jackson@eu.citrix.com>
CC: Wei Liu <wei.liu2@citrix.com>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Julien Grall <julien.grall@arm.com>
CC: Jan Beulich <jbeulich@suse.com>
CC: Andrew Cooper <andrew.cooper3@citrix.com>

 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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[PATCH 2/4 v3] libxl: Change the type of console_mfn to xen_pfn_t

[Bhupinder Thakur]

Currently the type of console mfn is unsigned long in libxl. This may be
an issue for 32-bit toolstack running on 64-bit Xen, where the pfn are
64 bit. To ensure that console_mfn can hold any valid 64-bit pfn, the
type of console_mfn is changed to xen_pfn_t.

Also the name console_mfn is misleading as it is actually a gfn. This
patch also modifies the name to console_gfn.

Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>
---
CC: Ian Jackson <ian.jackson@eu.citrix.com>
CC: Wei Liu <wei.liu2@citrix.com>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Julien Grall <julien.grall@arm.com>

This patch is as per the review of commit fa1f157
    libxl: Fix the bug introduced in commit "libxl: use correct type

 tools/libxc/include/xenctrl_compat.h |  2 +-
 tools/libxc/xc_foreign_memory.c      |  4 ++--
 tools/libxl/libxl_console.c          |  2 +-
 tools/libxl/libxl_create.c           | 10 +++++-----
 tools/libxl/libxl_dom.c              | 12 ++++++------
 tools/libxl/libxl_internal.h         |  2 +-
 tools/libxl/libxl_save_helper.c      |  6 +++---
 7 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/tools/libxc/include/xenctrl_compat.h b/tools/libxc/include/xenctrl_compat.h
index a655e47..5ee72bf 100644
--- a/tools/libxc/include/xenctrl_compat.h
+++ b/tools/libxc/include/xenctrl_compat.h
@@ -26,7 +26,7 @@
  */
 void *xc_map_foreign_range(xc_interface *xch, uint32_t dom,
                             int size, int prot,
-                            unsigned long mfn );
+                            xen_pfn_t pfn);
 
 void *xc_map_foreign_pages(xc_interface *xch, uint32_t dom, int prot,
                            const xen_pfn_t *arr, int num );
diff --git a/tools/libxc/xc_foreign_memory.c b/tools/libxc/xc_foreign_memory.c
index 4053d26..c1f114a 100644
--- a/tools/libxc/xc_foreign_memory.c
+++ b/tools/libxc/xc_foreign_memory.c
@@ -33,7 +33,7 @@ void *xc_map_foreign_pages(xc_interface *xch, uint32_t dom, int prot,
 
 void *xc_map_foreign_range(xc_interface *xch,
                            uint32_t dom, int size, int prot,
-                           unsigned long mfn)
+                           xen_pfn_t pfn)
 {
     xen_pfn_t *arr;
     int num;
@@ -46,7 +46,7 @@ void *xc_map_foreign_range(xc_interface *xch,
         return NULL;
 
     for ( i = 0; i < num; i++ )
-        arr[i] = mfn + i;
+        arr[i] = pfn + i;
 
     ret = xc_map_foreign_pages(xch, dom, prot, arr, num);
     free(arr);
diff --git a/tools/libxl/libxl_console.c b/tools/libxl/libxl_console.c
index 6bfc0e5..f2ca689 100644
--- a/tools/libxl/libxl_console.c
+++ b/tools/libxl/libxl_console.c
@@ -329,7 +329,7 @@ int libxl__device_console_add(libxl__gc *gc, uint32_t domid,
         flexarray_append(ro_front, "port");
         flexarray_append(ro_front, GCSPRINTF("%"PRIu32, state->console_port));
         flexarray_append(ro_front, "ring-ref");
-        flexarray_append(ro_front, GCSPRINTF("%lu", state->console_mfn));
+        flexarray_append(ro_front, GCSPRINTF("%"PRIu_xen_pfn, state->console_mfn));
     } else {
         flexarray_append(front, "state");
         flexarray_append(front, GCSPRINTF("%d", XenbusStateInitialising));
diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
index f15fb21..26870ca 100644
--- a/tools/libxl/libxl_create.c
+++ b/tools/libxl/libxl_create.c
@@ -1134,7 +1134,7 @@ static void domcreate_bootloader_done(libxl__egc *egc,
 }
 
 void libxl__srm_callout_callback_restore_results(xen_pfn_t store_mfn,
-          xen_pfn_t console_mfn, void *user)
+          xen_pfn_t console_gfn, void *user)
 {
     libxl__save_helper_state *shs = user;
     libxl__domain_create_state *dcs = shs->caller_state;
@@ -1142,7 +1142,7 @@ void libxl__srm_callout_callback_restore_results(xen_pfn_t store_mfn,
     libxl__domain_build_state *const state = &dcs->build_state;
 
     state->store_mfn =            store_mfn;
-    state->console_mfn =          console_mfn;
+    state->console_gfn =          console_gfn;
     shs->need_results =           0;
 }
 
@@ -1740,7 +1740,7 @@ static int do_domain_soft_reset(libxl_ctx *ctx,
     libxl__domain_create_state *dcs;
     libxl__domain_build_state *state;
     libxl__domain_save_state *dss;
-    const char *console_tty, *xs_store_mfn, *xs_console_mfn;
+    const char *console_tty, *xs_store_mfn, *xs_console_gfn;
     char *dom_path;
     uint32_t domid_out;
     int rc;
@@ -1781,12 +1781,12 @@ static int do_domain_soft_reset(libxl_ctx *ctx,
 
     rc = libxl__xs_read_checked(gc, XBT_NULL,
                                 GCSPRINTF("%s/console/ring-ref", dom_path),
-                                &xs_console_mfn);
+                                &xs_console_gfn);
     if (rc) {
         LOGD(ERROR, domid_soft_reset, "failed to read console/ring-ref.");
         goto out;
     }
-    state->console_mfn = xs_console_mfn ? atol(xs_console_mfn): 0;
+    state->console_gfn = xs_console_gfn ? atol(xs_console_gfn): 0;
 
     rc = libxl__xs_read_mandatory(gc, XBT_NULL,
                                   GCSPRINTF("%s/console/tty", dom_path),
diff --git a/tools/libxl/libxl_dom.c b/tools/libxl/libxl_dom.c
index ef834e6..647dbf7 100644
--- a/tools/libxl/libxl_dom.c
+++ b/tools/libxl/libxl_dom.c
@@ -852,11 +852,11 @@ int libxl__build_pv(libxl__gc *gc, uint32_t domid,
         goto out;
 
     if (xc_dom_translated(dom)) {
-        state->console_mfn = dom->console_pfn;
+        state->console_gfn = dom->console_pfn;
         state->store_mfn = dom->xenstore_pfn;
         state->vuart_gfn = dom->vuart_gfn;
     } else {
-        state->console_mfn = xc_dom_p2m(dom, dom->console_pfn);
+        state->console_gfn = xc_dom_p2m(dom, dom->console_pfn);
         state->store_mfn = xc_dom_p2m(dom, dom->xenstore_pfn);
     }
 
@@ -869,7 +869,7 @@ out:
 static int hvm_build_set_params(xc_interface *handle, uint32_t domid,
                                 libxl_domain_build_info *info,
                                 int store_evtchn, unsigned long *store_mfn,
-                                int console_evtchn, unsigned long *console_mfn,
+                                int console_evtchn, xen_pfn_t *console_gfn,
                                 domid_t store_domid, domid_t console_domid)
 {
     struct hvm_info_table *va_hvm;
@@ -901,9 +901,9 @@ static int hvm_build_set_params(xc_interface *handle, uint32_t domid,
     xc_hvm_param_set(handle, domid, HVM_PARAM_CONSOLE_EVTCHN, console_evtchn);
 
     *store_mfn = str_mfn;
-    *console_mfn = cons_mfn;
+    *console_gfn = cons_mfn;
 
-    xc_dom_gnttab_hvm_seed(handle, domid, *console_mfn, *store_mfn, console_domid, store_domid);
+    xc_dom_gnttab_hvm_seed(handle, domid, *console_gfn, *store_mfn, console_domid, store_domid);
     return 0;
 }
 
@@ -1270,7 +1270,7 @@ int libxl__build_hvm(libxl__gc *gc, uint32_t domid,
 
     rc = hvm_build_set_params(ctx->xch, domid, info, state->store_port,
                                &state->store_mfn, state->console_port,
-                               &state->console_mfn, state->store_domid,
+                               &state->console_gfn, state->store_domid,
                                state->console_domid);
     if (rc != 0) {
         LOG(ERROR, "hvm build set params failed");
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index bfa95d8..49f7966 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -1129,7 +1129,7 @@ typedef struct {
 
     uint32_t console_port;
     uint32_t console_domid;
-    unsigned long console_mfn;
+    xen_pfn_t console_gfn;
     char *console_tty;
 
     char *saved_state;
diff --git a/tools/libxl/libxl_save_helper.c b/tools/libxl/libxl_save_helper.c
index 38089a0..bf50ec8 100644
--- a/tools/libxl/libxl_save_helper.c
+++ b/tools/libxl/libxl_save_helper.c
@@ -284,17 +284,17 @@ int main(int argc, char **argv)
         helper_setcallbacks_restore(&helper_restore_callbacks, cbflags);
 
         unsigned long store_mfn = 0;
-        unsigned long console_mfn = 0;
+        unsigned long console_gfn = 0;
 
         startup("restore");
         setup_signals(SIG_DFL);
 
         r = xc_domain_restore(xch, io_fd, dom, store_evtchn, &store_mfn,
-                              store_domid, console_evtchn, &console_mfn,
+                              store_domid, console_evtchn, &console_gfn,
                               console_domid, hvm, pae,
                               stream_type,
                               &helper_restore_callbacks, send_back_fd);
-        helper_stub_restore_results(store_mfn,console_mfn,0);
+        helper_stub_restore_results(store_mfn,console_gfn,0);
         complete(r);
 
     } else {
-- 
2.7.4


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[PATCH 3/4 v3] xenconsole: Change the type of ring_ref to xen_pfn_t in console_create_ring

[Bhupinder Thakur]

Currently, ring_ref is read as an integer in console_create_ring which could lead to
truncation of the value as it is reading a 64-bit value.

The fix is to modify the type of ring_ref to xen_pfn_t and use the correct format
specifier to read the value correctly for all architectures.

Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>
Acked-by: Wei Liu <wei.liu2@citrix.com>
---
CC: Ian Jackson <ian.jackson@eu.citrix.com>
CC: Wei Liu <wei.liu2@citrix.com>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Julien Grall <julien.grall@arm.com>

This patch is as per the review of commit fa1f157
    libxl: Fix the bug introduced in commit "libxl: use correct type

 tools/console/daemon/io.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/tools/console/daemon/io.c b/tools/console/daemon/io.c
index e22009a..1839973 100644
--- a/tools/console/daemon/io.c
+++ b/tools/console/daemon/io.c
@@ -19,6 +19,7 @@
 
 #define _GNU_SOURCE
 
+#include <inttypes.h>
 #include "utils.h"
 #include "io.h"
 #include <xenevtchn.h>
@@ -81,6 +82,12 @@ static unsigned int nr_fds;
 
 #define ROUNDUP(_x,_w) (((unsigned long)(_x)+(1UL<<(_w))-1) & ~((1UL<<(_w))-1))
 
+#if defined(CONFIG_ARM)
+# define SCNi_xen_pfn SCNi64
+#else
+# define SCNi_xen_pfn "li"
+#endif
+
 struct buffer {
 	char *data;
 	size_t consumed;
@@ -98,7 +105,7 @@ struct console {
 	struct buffer buffer;
 	char *xspath;
 	char *log_suffix;
-	int ring_ref;
+	xen_pfn_t ring_ref;
 	xenevtchn_handle *xce_handle;
 	int xce_pollfd_idx;
 	int event_count;
@@ -661,12 +668,13 @@ static void console_unmap_interface(struct console *con)
  
 static int console_create_ring(struct console *con)
 {
-	int err, remote_port, ring_ref, rc;
+	int err, remote_port, rc;
+	xen_pfn_t ring_ref;
 	char *type, path[PATH_MAX];
 	struct domain *dom = con->d;
 
 	err = xs_gather(xs, con->xspath,
-			"ring-ref", "%u", &ring_ref,
+			"ring-ref", "%"SCNi_xen_pfn, &ring_ref,
 			"port", "%i", &remote_port,
 			NULL);
 
@@ -705,7 +713,7 @@ static int console_create_ring(struct console *con)
 		con->interface = xc_map_foreign_range(
 			xc, dom->domid, XC_PAGE_SIZE,
 			PROT_READ|PROT_WRITE,
-			(unsigned long)ring_ref);
+			ring_ref);
 		if (con->interface == NULL) {
 			err = EINVAL;
 			goto out;
-- 
2.7.4


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[PATCH 4/4 v3] xenconsole: Define and use a macro XEN_INVALID_PFN instead of -1

[Bhupinder Thakur]

xenconsole will use a new macro XEN_INVALID_PFN instead of -1 for initializing ring-ref.
Since the type of ring_ref is changed to xen_pfn_t (which is an unsigned value) assigning -1
appeared to be confusing. For clarity, XEN_INVALID_PFN is introduced.

Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>
---
CC: Ian Jackson <ian.jackson@eu.citrix.com>
CC: Wei Liu <wei.liu2@citrix.com>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Julien Grall <julien.grall@arm.com>

This patch is as per the review of commit fa1f157
    libxl: Fix the bug introduced in commit "libxl: use correct type

 tools/console/daemon/io.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/tools/console/daemon/io.c b/tools/console/daemon/io.c
index 1839973..aa291db 100644
--- a/tools/console/daemon/io.c
+++ b/tools/console/daemon/io.c
@@ -62,6 +62,8 @@
 /* Duration of each time period in ms */
 #define RATE_LIMIT_PERIOD 200
 
+#define XEN_INVALID_PFN (~(xen_pfn_t)0)
+
 extern int log_reload;
 extern int log_guest;
 extern int log_hv;
@@ -658,12 +660,12 @@ static void console_unmap_interface(struct console *con)
 {
 	if (con->interface == NULL)
 		return;
-	if (xgt_handle && con->ring_ref == -1)
+	if (xgt_handle && con->ring_ref == XEN_INVALID_PFN)
 		xengnttab_unmap(xgt_handle, con->interface, 1);
 	else
 		munmap(con->interface, XC_PAGE_SIZE);
 	con->interface = NULL;
-	con->ring_ref = -1;
+	con->ring_ref = XEN_INVALID_PFN;
 }
  
 static int console_create_ring(struct console *con)
@@ -698,7 +700,7 @@ static int console_create_ring(struct console *con)
 	free(type);
 
 	/* If using ring_ref and it has changed, remap */
-	if (ring_ref != con->ring_ref && con->ring_ref != -1)
+	if (ring_ref != con->ring_ref && con->ring_ref != XEN_INVALID_PFN)
 		console_unmap_interface(con);
 
 	if (!con->interface && xgt_handle && con->use_gnttab) {
@@ -706,7 +708,7 @@ static int console_create_ring(struct console *con)
 		con->interface = xengnttab_map_grant_ref(xgt_handle,
 			dom->domid, GNTTAB_RESERVED_CONSOLE,
 			PROT_READ|PROT_WRITE);
-		con->ring_ref = -1;
+		con->ring_ref = XEN_INVALID_PFN;
 	}
 	if (!con->interface) {
 		/* Fall back to xc_map_foreign_range */
@@ -812,7 +814,7 @@ static int console_init(struct console *con, struct domain *dom, void **data)
 	con->master_pollfd_idx = -1;
 	con->slave_fd = -1;
 	con->log_fd = -1;
-	con->ring_ref = -1;
+	con->ring_ref = XEN_INVALID_PFN;
 	con->local_port = -1;
 	con->remote_port = -1;
 	con->xce_pollfd_idx = -1;
-- 
2.7.4


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Re: [PATCH 2/4 v3] libxl: Change the type of console_mfn to xen_pfn_t

[Wei Liu]

On Tue, Oct 31, 2017 at 12:25:06PM +0530, Bhupinder Thakur wrote:
> Currently the type of console mfn is unsigned long in libxl. This may be
> an issue for 32-bit toolstack running on 64-bit Xen, where the pfn are
> 64 bit. To ensure that console_mfn can hold any valid 64-bit pfn, the
> type of console_mfn is changed to xen_pfn_t.
> 
> Also the name console_mfn is misleading as it is actually a gfn. This
> patch also modifies the name to console_gfn.
> 
> Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>

Acked-by: Wei Liu <wei.liu2@citrix.com>

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Re: [PATCH 4/4 v3] xenconsole: Define and use a macro XEN_INVALID_PFN instead of -1

[Wei Liu]

On Tue, Oct 31, 2017 at 12:25:08PM +0530, Bhupinder Thakur wrote:
> xenconsole will use a new macro XEN_INVALID_PFN instead of -1 for initializing ring-ref.
> Since the type of ring_ref is changed to xen_pfn_t (which is an unsigned value) assigning -1
> appeared to be confusing. For clarity, XEN_INVALID_PFN is introduced.
> 
> Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>

Acked-by: Wei Liu <wei.liu2@citrix.com>

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Re: [PATCH 1/4 v3 for-4.10] libxl: Fix the bug introduced in commit "libxl: use correct type modifier for vuart_gfn"

[Wei Liu]

Change the tag to for-4.10.

Julien, this is needed to fix vuart emulation.

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Re: [PATCH 1/4 v3 for-4.10] libxl: Fix the bug introduced in commit "libxl: use correct type modifier for vuart_gfn"

[Julien Grall]

Hi Wei,

Sorry I missed that e-mail.

On 10/31/2017 10:07 AM, Wei Liu wrote:
> Change the tag to for-4.10.
> 
> Julien, this is needed to fix vuart emulation.

To confirm, only patch #1 is candidate for Xen 4.10, right? The rest 
will be queued for Xen 4.11?

For patch #1:

Release-acked-by: Julien Grall <julien.grall@linaro.org>

Cheers,

--
Julien Grall

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Re: [PATCH 1/4 v3 for-4.10] libxl: Fix the bug introduced in commit "libxl: use correct type modifier for vuart_gfn"

[Wei Liu]

On Mon, Nov 13, 2017 at 03:56:23PM +0000, Julien Grall wrote:
> Hi Wei,
> 
> Sorry I missed that e-mail.
> 
> On 10/31/2017 10:07 AM, Wei Liu wrote:
> > Change the tag to for-4.10.
> > 
> > Julien, this is needed to fix vuart emulation.
> 
> To confirm, only patch #1 is candidate for Xen 4.10, right? The rest will be
> queued for Xen 4.11?
> 

I think so. 

Bhupinder, can you confirm that?

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Re: [PATCH 1/4 v3 for-4.10] libxl: Fix the bug introduced in commit "libxl: use correct type modifier for vuart_gfn"

[Bhupinder Thakur]

[-- Attachment #1.1: Type: text/plain, Size: 581 bytes --]

Hi,

On 14 Nov 2017 3:35 pm, "Wei Liu" <wei.liu2@citrix.com> wrote:

> On Mon, Nov 13, 2017 at 03:56:23PM +0000, Julien Grall wrote:
> > Hi Wei,
> >
> > Sorry I missed that e-mail.
> >
> > On 10/31/2017 10:07 AM, Wei Liu wrote:
> > > Change the tag to for-4.10.
> > >
> > > Julien, this is needed to fix vuart emulation.
> >
> > To confirm, only patch #1 is candidate for Xen 4.10, right? The rest
> will be
> > queued for Xen 4.11?
> >
>
> I think so.
>
> Bhupinder, can you confirm that?
>

Yes. Only first patch is required for fixing the compilation issue.

Regards,
Bhupinder

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Re: [PATCH 1/4 v3 for-4.10] libxl: Fix the bug introduced in commit "libxl: use correct type modifier for vuart_gfn"

[Wei Liu]

On Tue, Nov 14, 2017 at 05:12:26PM +0530, Bhupinder Thakur wrote:
> Hi,
> 
> On 14 Nov 2017 3:35 pm, "Wei Liu" <wei.liu2@citrix.com> wrote:
> 
> > On Mon, Nov 13, 2017 at 03:56:23PM +0000, Julien Grall wrote:
> > > Hi Wei,
> > >
> > > Sorry I missed that e-mail.
> > >
> > > On 10/31/2017 10:07 AM, Wei Liu wrote:
> > > > Change the tag to for-4.10.
> > > >
> > > > Julien, this is needed to fix vuart emulation.
> > >
> > > To confirm, only patch #1 is candidate for Xen 4.10, right? The rest
> > will be
> > > queued for Xen 4.11?
> > >
> >
> > I think so.
> >
> > Bhupinder, can you confirm that?
> >
> 
> Yes. Only first patch is required for fixing the compilation issue.
> 

Thanks. I will commit the first patch and put the rest in my for-next
queue.

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Re: [PATCH 1/4 v3 for-4.10] libxl: Fix the bug introduced in commit "libxl: use correct type modifier for vuart_gfn"

[Wei Liu]

On Tue, Nov 14, 2017 at 01:56:11PM +0000, Wei Liu wrote:
> On Tue, Nov 14, 2017 at 05:12:26PM +0530, Bhupinder Thakur wrote:
> > Hi,
> > 
> > On 14 Nov 2017 3:35 pm, "Wei Liu" <wei.liu2@citrix.com> wrote:
> > 
> > > On Mon, Nov 13, 2017 at 03:56:23PM +0000, Julien Grall wrote:
> > > > Hi Wei,
> > > >
> > > > Sorry I missed that e-mail.
> > > >
> > > > On 10/31/2017 10:07 AM, Wei Liu wrote:
> > > > > Change the tag to for-4.10.
> > > > >
> > > > > Julien, this is needed to fix vuart emulation.
> > > >
> > > > To confirm, only patch #1 is candidate for Xen 4.10, right? The rest
> > > will be
> > > > queued for Xen 4.11?
> > > >
> > >
> > > I think so.
> > >
> > > Bhupinder, can you confirm that?
> > >
> > 
> > Yes. Only first patch is required for fixing the compilation issue.
> > 
> 
> Thanks. I will commit the first patch and put the rest in my for-next
> queue.

OK, patch 2 to 4 applied cleanly but the build is broken by them.

libxl_console.c: In function ‘libxl__device_console_add’:
libxl_console.c:332:68: error: ‘libxl__domain_build_state {aka struct <anonymous>}’ has no member named ‘console_mfn’; did you mean ‘console_gfn’?
         flexarray_append(ro_front, GCSPRINTF("%"PRIu_xen_pfn, state->console_mfn));
                                                                    ^
libxl_internal.h:3921:58: note: in definition of macro ‘GCSPRINTF’
 #define GCSPRINTF(fmt, ...) (libxl__sprintf((gc), (fmt), __VA_ARGS__))
                                                          ^~~~~~~~~~~

For now I've dropped this series.

Wei.

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