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[Qemu-devel] [PULL 06/14] pc: Set hw_version on all machine classes
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 06/14] pc: Set hw_version on all machine classes |
Date: |
Wed, 4 Nov 2015 17:18:24 +0100 |
From: Eduardo Habkost <address@hidden>
In 2012, QEMU had a bug where it exposed QEMU version information to the
guest, meaning a QEMU upgrade would expose different hardware to the
guest OS even if the same machine-type is being used.
The bug was fixed by commit 93bfef4c6e4b23caea9d51e1099d06433d8835a4, on
all machines up to pc-1.0. But we kept introducing the same bug on all
newer machines since then. That means we are breaking guest ABI every
time QEMU was upgraded.
Fix this by setting the hw_version on all PC machines, making sure the
hardware won't change when upgrading QEMU.
Note that QEMU_VERSION was "1.0" in QEMU 1.0, but starting on QEMU
1.1.0, it started following the "x.y.0" pattern. We have to follow it,
to make sure we use the right QEMU_VERSION string from each QEMU
release.
The 2.5 machine classes could have hw_version unset, because the default
value for qemu_get_version() is QEMU_VERSION. But I decided to set it
explicitly to QEMU_VERSION so we don't forget to update it to "2.5.0"
after we release 2.5.0 and create a 2.6 machine class.
Reported-by: Laszlo Ersek <address@hidden>
Reviewed-by: Laszlo Ersek <address@hidden>
Signed-off-by: Eduardo Habkost <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
hw/i386/pc_piix.c | 13 +++++++++++++
hw/i386/pc_q35.c | 10 ++++++++++
2 files changed, 23 insertions(+)
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 393dcc4..07d0baa 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -472,6 +472,7 @@ static void pc_i440fx_machine_options(MachineClass *m)
static void pc_i440fx_2_5_machine_options(MachineClass *m)
{
pc_i440fx_machine_options(m);
+ m->hw_version = QEMU_VERSION;
m->alias = "pc";
m->is_default = 1;
}
@@ -484,6 +485,7 @@ static void pc_i440fx_2_4_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_i440fx_2_5_machine_options(m);
+ m->hw_version = "2.4.0";
m->alias = NULL;
m->is_default = 0;
pcmc->broken_reserved_end = true;
@@ -497,6 +499,7 @@ DEFINE_I440FX_MACHINE(v2_4, "pc-i440fx-2.4", NULL,
static void pc_i440fx_2_3_machine_options(MachineClass *m)
{
pc_i440fx_2_4_machine_options(m);
+ m->hw_version = "2.3.0";
m->alias = NULL;
m->is_default = 0;
SET_MACHINE_COMPAT(m, PC_COMPAT_2_3);
@@ -509,6 +512,7 @@ DEFINE_I440FX_MACHINE(v2_3, "pc-i440fx-2.3", pc_compat_2_3,
static void pc_i440fx_2_2_machine_options(MachineClass *m)
{
pc_i440fx_2_3_machine_options(m);
+ m->hw_version = "2.2.0";
SET_MACHINE_COMPAT(m, PC_COMPAT_2_2);
}
@@ -519,6 +523,7 @@ DEFINE_I440FX_MACHINE(v2_2, "pc-i440fx-2.2", pc_compat_2_2,
static void pc_i440fx_2_1_machine_options(MachineClass *m)
{
pc_i440fx_2_2_machine_options(m);
+ m->hw_version = "2.1.0";
m->default_display = NULL;
SET_MACHINE_COMPAT(m, PC_COMPAT_2_1);
}
@@ -531,6 +536,7 @@ DEFINE_I440FX_MACHINE(v2_1, "pc-i440fx-2.1", pc_compat_2_1,
static void pc_i440fx_2_0_machine_options(MachineClass *m)
{
pc_i440fx_2_1_machine_options(m);
+ m->hw_version = "2.0.0";
SET_MACHINE_COMPAT(m, PC_COMPAT_2_0);
}
@@ -541,6 +547,7 @@ DEFINE_I440FX_MACHINE(v2_0, "pc-i440fx-2.0", pc_compat_2_0,
static void pc_i440fx_1_7_machine_options(MachineClass *m)
{
pc_i440fx_2_0_machine_options(m);
+ m->hw_version = "1.7.0";
m->default_machine_opts = NULL;
SET_MACHINE_COMPAT(m, PC_COMPAT_1_7);
}
@@ -552,6 +559,7 @@ DEFINE_I440FX_MACHINE(v1_7, "pc-i440fx-1.7", pc_compat_1_7,
static void pc_i440fx_1_6_machine_options(MachineClass *m)
{
pc_i440fx_1_7_machine_options(m);
+ m->hw_version = "1.6.0";
SET_MACHINE_COMPAT(m, PC_COMPAT_1_6);
}
@@ -562,6 +570,7 @@ DEFINE_I440FX_MACHINE(v1_6, "pc-i440fx-1.6", pc_compat_1_6,
static void pc_i440fx_1_5_machine_options(MachineClass *m)
{
pc_i440fx_1_6_machine_options(m);
+ m->hw_version = "1.5.0";
SET_MACHINE_COMPAT(m, PC_COMPAT_1_5);
}
@@ -572,6 +581,7 @@ DEFINE_I440FX_MACHINE(v1_5, "pc-i440fx-1.5", pc_compat_1_5,
static void pc_i440fx_1_4_machine_options(MachineClass *m)
{
pc_i440fx_1_5_machine_options(m);
+ m->hw_version = "1.4.0";
m->hot_add_cpu = NULL;
SET_MACHINE_COMPAT(m, PC_COMPAT_1_4);
}
@@ -604,6 +614,7 @@ DEFINE_I440FX_MACHINE(v1_4, "pc-i440fx-1.4", pc_compat_1_4,
static void pc_i440fx_1_3_machine_options(MachineClass *m)
{
pc_i440fx_1_4_machine_options(m);
+ m->hw_version = "1.3.0";
SET_MACHINE_COMPAT(m, PC_COMPAT_1_3);
}
@@ -642,6 +653,7 @@ DEFINE_I440FX_MACHINE(v1_3, "pc-1.3", pc_compat_1_3,
static void pc_i440fx_1_2_machine_options(MachineClass *m)
{
pc_i440fx_1_3_machine_options(m);
+ m->hw_version = "1.2.0";
SET_MACHINE_COMPAT(m, PC_COMPAT_1_2);
}
@@ -684,6 +696,7 @@ DEFINE_I440FX_MACHINE(v1_2, "pc-1.2", pc_compat_1_2,
static void pc_i440fx_1_1_machine_options(MachineClass *m)
{
pc_i440fx_1_2_machine_options(m);
+ m->hw_version = "1.1.0";
SET_MACHINE_COMPAT(m, PC_COMPAT_1_1);
}
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 2f8f396..0fdae09 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -373,6 +373,7 @@ static void pc_q35_machine_options(MachineClass *m)
static void pc_q35_2_5_machine_options(MachineClass *m)
{
pc_q35_machine_options(m);
+ m->hw_version = QEMU_VERSION;
m->alias = "q35";
}
@@ -383,6 +384,7 @@ static void pc_q35_2_4_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_q35_2_5_machine_options(m);
+ m->hw_version = "2.4.0";
m->alias = NULL;
pcmc->broken_reserved_end = true;
SET_MACHINE_COMPAT(m, PC_COMPAT_2_4);
@@ -395,6 +397,7 @@ DEFINE_Q35_MACHINE(v2_4, "pc-q35-2.4", NULL,
static void pc_q35_2_3_machine_options(MachineClass *m)
{
pc_q35_2_4_machine_options(m);
+ m->hw_version = "2.3.0";
m->no_floppy = 0;
m->no_tco = 1;
m->alias = NULL;
@@ -408,6 +411,7 @@ DEFINE_Q35_MACHINE(v2_3, "pc-q35-2.3", pc_compat_2_3,
static void pc_q35_2_2_machine_options(MachineClass *m)
{
pc_q35_2_3_machine_options(m);
+ m->hw_version = "2.2.0";
SET_MACHINE_COMPAT(m, PC_COMPAT_2_2);
}
@@ -418,6 +422,7 @@ DEFINE_Q35_MACHINE(v2_2, "pc-q35-2.2", pc_compat_2_2,
static void pc_q35_2_1_machine_options(MachineClass *m)
{
pc_q35_2_2_machine_options(m);
+ m->hw_version = "2.1.0";
m->default_display = NULL;
SET_MACHINE_COMPAT(m, PC_COMPAT_2_1);
}
@@ -429,6 +434,7 @@ DEFINE_Q35_MACHINE(v2_1, "pc-q35-2.1", pc_compat_2_1,
static void pc_q35_2_0_machine_options(MachineClass *m)
{
pc_q35_2_1_machine_options(m);
+ m->hw_version = "2.0.0";
SET_MACHINE_COMPAT(m, PC_COMPAT_2_0);
}
@@ -439,6 +445,7 @@ DEFINE_Q35_MACHINE(v2_0, "pc-q35-2.0", pc_compat_2_0,
static void pc_q35_1_7_machine_options(MachineClass *m)
{
pc_q35_2_0_machine_options(m);
+ m->hw_version = "1.7.0";
m->default_machine_opts = NULL;
SET_MACHINE_COMPAT(m, PC_COMPAT_1_7);
}
@@ -450,6 +457,7 @@ DEFINE_Q35_MACHINE(v1_7, "pc-q35-1.7", pc_compat_1_7,
static void pc_q35_1_6_machine_options(MachineClass *m)
{
pc_q35_machine_options(m);
+ m->hw_version = "1.6.0";
SET_MACHINE_COMPAT(m, PC_COMPAT_1_6);
}
@@ -460,6 +468,7 @@ DEFINE_Q35_MACHINE(v1_6, "pc-q35-1.6", pc_compat_1_6,
static void pc_q35_1_5_machine_options(MachineClass *m)
{
pc_q35_1_6_machine_options(m);
+ m->hw_version = "1.5.0";
SET_MACHINE_COMPAT(m, PC_COMPAT_1_5);
}
@@ -470,6 +479,7 @@ DEFINE_Q35_MACHINE(v1_5, "pc-q35-1.5", pc_compat_1_5,
static void pc_q35_1_4_machine_options(MachineClass *m)
{
pc_q35_1_5_machine_options(m);
+ m->hw_version = "1.4.0";
m->hot_add_cpu = NULL;
SET_MACHINE_COMPAT(m, PC_COMPAT_1_4);
}
--
1.8.3.1
- [Qemu-devel] [PULL 00/14] Misc changes for QEMU 2.4-rc1, Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 02/14] scripts/text2pod.pl: Escape left brace, Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 05/14] qemu-log: remove -d ioport, Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 01/14] file_ram_alloc: propagate error to caller instead of terminating QEMU, Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 04/14] ioport: do not use CPU_LOG_IOPORT, Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 03/14] target-i386: fix pcmpxstrx equal-ordered (strstr) mode, Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 10/14] cpu-exec: Fix compiler warning (-Werror=clobbered), Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 06/14] pc: Set hw_version on all machine classes,
Paolo Bonzini <=
- [Qemu-devel] [PULL 09/14] memory: call begin, log_start and commit when registering a new listener, Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 11/14] configure: disallow ccache during compile tests, Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 14/14] configure: disable FORTIFY_SOURCE under clang, Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 07/14] osdep: Rename qemu_{get, set}_version() to qemu_{, set_}hw_version(), Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 12/14] backends/hostmem-file: Allow to specify full pathname for backing file, Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 13/14] iscsi: Translate scsi sense into error code, Paolo Bonzini, 2015/11/04
- [Qemu-devel] [PULL 08/14] megasas: Use qemu_hw_version() instead of QEMU_VERSION, Paolo Bonzini, 2015/11/04
- Re: [Qemu-devel] [PULL 00/14] Misc changes for QEMU 2.4-rc1, Peter Maydell, 2015/11/04