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fw_cfg: ignore suffixes in the bootdevice list dependent on machine class

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For the older machines (such as Mac and SPARC) the DT nodes representing
bootdevices for disk nodes are irregular for mainly historical reasons.

Since the majority of bootdevice nodes for these machines either do not have a
separate disk node or require different (custom) names then it is much easier
for processing to just disable all suffixes for a particular machine.

Introduce a new ignore_boot_device_suffixes MachineClass property to control
bootdevice suffix generation, defaulting to false in order to preserve
compatibility.

Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20180810124027.10698-1-mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Mark Cave-Ayland 2018-08-10 13:40:27 +01:00 committed by Eduardo Habkost
parent be64d7776b
commit 907aac2f6a
5 changed files with 9 additions and 4 deletions
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5
bootdevice.c
View file

@ -29,6 +29,7 @@
#include "qemu/error-report.h"
#include "sysemu/reset.h"
#include "hw/qdev-core.h"
#include "hw/boards.h"
typedef struct FWBootEntry FWBootEntry;
@ -208,11 +209,13 @@ 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, bool ignore_suffixes)
char *get_boot_devices_list(size_t *size)
{
FWBootEntry *i;
size_t total = 0;
char *list = NULL;
MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
bool ignore_suffixes = mc->ignore_boot_device_suffixes;
QTAILQ_FOREACH(i, &fw_boot_order, link) {
char *devpath = NULL, *suffix = NULL;

2
hw/nvram/fw_cfg.c
View file

@ -861,7 +861,7 @@ static void fw_cfg_machine_reset(void *opaque)
void *ptr;
size_t len;
FWCfgState *s = opaque;
char *bootindex = get_boot_devices_list(&len, false);
char *bootindex = get_boot_devices_list(&len);
ptr = fw_cfg_modify_file(s, "bootorder", (uint8_t *)bootindex, len);
g_free(ptr);

3
hw/ppc/spapr.c
View file

@ -1160,7 +1160,7 @@ static void spapr_dt_chosen(sPAPRMachineState *spapr, void *fdt)
const char *boot_device = machine->boot_order;
char *stdout_path = spapr_vio_stdout_path(spapr->vio_bus);
size_t cb = 0;
char *bootlist = get_boot_devices_list(&cb, true);
char *bootlist = get_boot_devices_list(&cb);
_FDT(chosen = fdt_add_subnode(fdt, 0, "chosen"));
@ -3949,6 +3949,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
InterruptStatsProviderClass *ispc = INTERRUPT_STATS_PROVIDER_CLASS(oc);
mc->desc = "pSeries Logical Partition (PAPR compliant)";
mc->ignore_boot_device_suffixes = true;
/*
* We set up the default / latest behaviour here. The class_init

1
include/hw/boards.h
View file

@ -206,6 +206,7 @@ struct MachineClass {
bool auto_enable_numa_with_memhp;
void (*numa_auto_assign_ram)(MachineClass *mc, NodeInfo *nodes,
int nb_nodes, ram_addr_t size);
bool ignore_boot_device_suffixes;
HotplugHandler *(*get_hotplug_handler)(MachineState *machine,
DeviceState *dev);

2
include/sysemu/sysemu.h
View file

@ -182,7 +182,7 @@ void hmp_info_usb(Monitor *mon, const QDict *qdict);
void add_boot_device_path(int32_t bootindex, DeviceState *dev,
const char *suffix);
char *get_boot_devices_list(size_t *size, bool ignore_suffixes);
char *get_boot_devices_list(size_t *size);
DeviceState *get_boot_device(uint32_t position);
void check_boot_index(int32_t bootindex, Error **errp);