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[Qemu-devel] [PULL 27/49] pvh: load initrd and expose it through fw_cfg
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 27/49] pvh: load initrd and expose it through fw_cfg |
Date: |
Mon, 21 Jan 2019 19:05:58 +0100 |
From: Stefano Garzarella <address@hidden>
When initrd is specified, load and expose it to the guest firmware
through fw_cfg. The firmware will fill the hvm_start_info for the
kernel.
Signed-off-by: Stefano Garzarella <address@hidden>
Based-on: <address@hidden>
Signed-off-by: Liam Merwick <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
hw/i386/pc.c | 38 +++++++++++++++++++++++++++++---------
1 file changed, 29 insertions(+), 9 deletions(-)
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 6d54995..9ed5063 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1213,25 +1213,45 @@ static void load_linux(PCMachineState *pcms,
*/
if (load_elfboot(kernel_filename, kernel_size,
header, pvh_start_addr, fw_cfg)) {
- struct hvm_modlist_entry ramdisk_mod = { 0 };
-
fclose(f);
fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE,
strlen(kernel_cmdline) + 1);
fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA, kernel_cmdline);
- assert(machine->device_memory != NULL);
- ramdisk_mod.paddr = machine->device_memory->base;
- ramdisk_mod.size =
- memory_region_size(&machine->device_memory->mr);
-
- fw_cfg_add_bytes(fw_cfg, FW_CFG_KERNEL_DATA, &ramdisk_mod,
- sizeof(ramdisk_mod));
fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_SIZE, sizeof(header));
fw_cfg_add_bytes(fw_cfg, FW_CFG_SETUP_DATA,
header, sizeof(header));
+ /* load initrd */
+ if (initrd_filename) {
+ gsize initrd_size;
+ gchar *initrd_data;
+ GError *gerr = NULL;
+
+ if (!g_file_get_contents(initrd_filename, &initrd_data,
+ &initrd_size, &gerr)) {
+ fprintf(stderr, "qemu: error reading initrd %s: %s\n",
+ initrd_filename, gerr->message);
+ exit(1);
+ }
+
+ initrd_max = pcms->below_4g_mem_size - pcmc->acpi_data_size -
1;
+ if (initrd_size >= initrd_max) {
+ fprintf(stderr, "qemu: initrd is too large, cannot
support."
+ "(max: %"PRIu32", need %"PRId64")\n",
+ initrd_max, (uint64_t)initrd_size);
+ exit(1);
+ }
+
+ initrd_addr = (initrd_max - initrd_size) & ~4095;
+
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
+ fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data,
+ initrd_size);
+ }
+
return;
}
/* This looks like a multiboot kernel. If it is, let's stop
--
1.8.3.1
- [Qemu-devel] [PULL 24/49] elf-ops.h: Add get_elf_note_type(), (continued)
- [Qemu-devel] [PULL 24/49] elf-ops.h: Add get_elf_note_type(), Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 25/49] pvh: Add x86/HVM direct boot ABI header file, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 28/49] linuxboot_dma: remove duplicate definitions of FW_CFG, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 23/49] elf: Add optional function ptr to load_elf() to parse ELF notes, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 31/49] optionrom/pvh: load initrd from fw_cfg, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 32/49] i386: remove the new CPUID 'PCONFIG' from Icelake-Server CPU model, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 36/49] contrib/elf2dmp: fix elf.h including, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 30/49] hw/i386/pc: use PVH option rom, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 39/49] contrib/elf2dmp: fix structures definitions, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 26/49] pvh: Boot uncompressed kernel using direct boot ABI, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 27/49] pvh: load initrd and expose it through fw_cfg,
Paolo Bonzini <=
- [Qemu-devel] [PULL 38/49] contrib/elf2dmp: use GLib in PDB processing, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 41/49] configure: enable elf2dmp build for Windows hosts, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 34/49] Revert "i386: Add CPUID bit for PCONFIG", Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 35/49] target-i386: hvf: remove MPX support, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 37/49] contrib/elf2dmp: use GLib in ELF processing, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 02/49] include: update Linux headers to 4.21-rc1/5.0-rc1, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 29/49] linuxboot_dma: move common functions in a new header, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 33/49] i386: remove the 'INTEL_PT' CPUID bit from named CPU models, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 42/49] monitor: do not use QTAILQ_FOREACH_SAFE across critical sections, Paolo Bonzini, 2019/01/21
- [Qemu-devel] [PULL 43/49] crypto: finish removing TABs, Paolo Bonzini, 2019/01/21