[Qemu-devel] [PATCH v7 1/6] boot: extend get_boot_devices_list() to ignore suffixes

[Alexey Kardashevskiy <aik@ozlabs.ru>]

As suffixes do not make sense for sPAPR's device tree and
there is no way to filter them out on the BusState::get_fw_dev_path
level, let's add an ability for the external caller to specify
whether to apply suffixes or not.

We could handle suffixes in SLOF (ignore for now) but this would require
serious rework in the node opening code in SLOF which has no obvious
benefit for the currently emulated sPAPR machine.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
Changes:
v4:
* changed commit message about not having plans in SLOF rework as it is scary :)
---
 hw/nvram/fw_cfg.c       | 2 +-
 include/sysemu/sysemu.h | 2 +-
 vl.c                    | 8 +++++---
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
index cb36dc2..282341a 100644
--- a/hw/nvram/fw_cfg.c
+++ b/hw/nvram/fw_cfg.c
@@ -504,7 +504,7 @@ static void fw_cfg_machine_ready(struct Notifier *n, void *data)
 {
     size_t len;
     FWCfgState *s = container_of(n, FWCfgState, machine_ready);
-    char *bootindex = get_boot_devices_list(&len);
+    char *bootindex = get_boot_devices_list(&len, false);
 
     fw_cfg_add_file(s, "bootorder", (uint8_t*)bootindex, len);
 }
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index c01304d..3915ce3 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -186,7 +186,7 @@ void rtc_change_mon_event(struct tm *tm);
 
 void add_boot_device_path(int32_t bootindex, DeviceState *dev,
                           const char *suffix);
-char *get_boot_devices_list(size_t *size);
+char *get_boot_devices_list(size_t *size, bool ignore_suffixes);
 
 DeviceState *get_boot_device(uint32_t position);
 
diff --git a/vl.c b/vl.c
index 842e897..19b4842 100644
--- a/vl.c
+++ b/vl.c
@@ -1206,7 +1206,7 @@ DeviceState *get_boot_device(uint32_t position)
  * memory pointed by "size" is assigned total length of the array in bytes
  *
  */
-char *get_boot_devices_list(size_t *size)
+char *get_boot_devices_list(size_t *size, bool ignore_suffixes)
 {
     FWBootEntry *i;
     size_t total = 0;
@@ -1221,7 +1221,7 @@ char *get_boot_devices_list(size_t *size)
             assert(devpath);
         }
 
-        if (i->suffix && devpath) {
+        if (i->suffix && !ignore_suffixes && devpath) {
             size_t bootpathlen = strlen(devpath) + strlen(i->suffix) + 1;
 
             bootpath = g_malloc(bootpathlen);
@@ -1229,9 +1229,11 @@ char *get_boot_devices_list(size_t *size)
             g_free(devpath);
         } else if (devpath) {
             bootpath = devpath;
-        } else {
+        } else if (!ignore_suffixes) {
             assert(i->suffix);
             bootpath = g_strdup(i->suffix);
+        } else {
+            bootpath = g_strdup("");
         }
 
         if (total) {
-- 
1.8.4.rc4