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authorMichael S. Tsirkin <mst@redhat.com>2014-03-06 14:57:09 +0200
committerMichael S. Tsirkin <mst@redhat.com>2014-03-11 13:25:48 +0200
commitac41881b48858b279960a17c07f0b159af91e75a (patch)
tree4fdc78f45b3fe888b3aefd4c13ab4a0c8170e469
parent98bc3ab0f256cb983700089770db0823e59c7ceb (diff)
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pc: avoid duplicate names for ROM MRs
Since commit 04920fc0faa4760f9c4fc0e73b992b768099be70 loader: store FW CFG ROM files in RAM RAM MRs including ROM files in FW CFGs are created and named using the file basename. This becomes problematic if these names are supplied by user, since the basename might not be unique. There are two cases we care about: - option-rom flag. - option ROM for devices. This triggers e.g. when using rombar=0. At the moment we get an assert. E.g qemu -option-rom /usr/share/ipxe/8086100e.rom -option-rom /usr/share/ipxe.efi/8086100e.rom RAMBlock "/rom@genroms/8086100e.rom" already registered, abort! This is a regression from 1.6. For now let's keep it simple and just avoid creating the MRs in case of option ROMs. when using 1.7 machine types, enable option ROMs in RAM to match that version. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-rw-r--r--hw/core/loader.c10
-rw-r--r--hw/i386/pc_piix.c1
-rw-r--r--hw/i386/pc_q35.c1
-rw-r--r--include/hw/loader.h6
4 files changed, 12 insertions, 6 deletions
diff --git a/hw/core/loader.c b/hw/core/loader.c
index 13e98d8..2bf6b8f 100644
--- a/hw/core/loader.c
+++ b/hw/core/loader.c
@@ -54,6 +54,7 @@
#include <zlib.h>
+bool option_rom_has_mr = false;
bool rom_file_has_mr = true;
static int roms_loaded;
@@ -642,7 +643,8 @@ static void *rom_set_mr(Rom *rom, Object *owner, const char *name)
}
int rom_add_file(const char *file, const char *fw_dir,
- hwaddr addr, int32_t bootindex)
+ hwaddr addr, int32_t bootindex,
+ bool option_rom)
{
Rom *rom;
int rc, fd = -1;
@@ -694,7 +696,7 @@ int rom_add_file(const char *file, const char *fw_dir,
basename);
snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
- if (rom_file_has_mr) {
+ if ((!option_rom || option_rom_has_mr) && rom_file_has_mr) {
data = rom_set_mr(rom, OBJECT(fw_cfg), devpath);
} else {
data = rom->data;
@@ -773,12 +775,12 @@ int rom_add_elf_program(const char *name, void *data, size_t datasize,
int rom_add_vga(const char *file)
{
- return rom_add_file(file, "vgaroms", 0, -1);
+ return rom_add_file(file, "vgaroms", 0, -1, true);
}
int rom_add_option(const char *file, int32_t bootindex)
{
- return rom_add_file(file, "genroms", 0, bootindex);
+ return rom_add_file(file, "genroms", 0, bootindex, true);
}
static void rom_reset(void *unused)
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index fb2d636..5e1d2d3 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -266,6 +266,7 @@ static void pc_compat_1_7(QEMUMachineInitArgs *args)
{
smbios_type1_defaults = false;
gigabyte_align = false;
+ option_rom_has_mr = true;
}
static void pc_compat_1_6(QEMUMachineInitArgs *args)
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index eb55ae4..4b0456a 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -244,6 +244,7 @@ static void pc_compat_1_7(QEMUMachineInitArgs *args)
{
smbios_type1_defaults = false;
gigabyte_align = false;
+ option_rom_has_mr = true;
}
static void pc_compat_1_6(QEMUMachineInitArgs *args)
diff --git a/include/hw/loader.h b/include/hw/loader.h
index 3dc5b94..796cbf9 100644
--- a/include/hw/loader.h
+++ b/include/hw/loader.h
@@ -49,10 +49,12 @@ void pstrcpy_targphys(const char *name,
hwaddr dest, int buf_size,
const char *source);
+extern bool option_rom_has_mr;
extern bool rom_file_has_mr;
int rom_add_file(const char *file, const char *fw_dir,
- hwaddr addr, int32_t bootindex);
+ hwaddr addr, int32_t bootindex,
+ bool option_rom);
void *rom_add_blob(const char *name, const void *blob, size_t len,
hwaddr addr, const char *fw_file_name,
FWCfgReadCallback fw_callback, void *callback_opaque);
@@ -66,7 +68,7 @@ void *rom_ptr(hwaddr addr);
void do_info_roms(Monitor *mon, const QDict *qdict);
#define rom_add_file_fixed(_f, _a, _i) \
- rom_add_file(_f, NULL, _a, _i)
+ rom_add_file(_f, NULL, _a, _i, false)
#define rom_add_blob_fixed(_f, _b, _l, _a) \
rom_add_blob(_f, _b, _l, _a, NULL, NULL, NULL)