From 8e8cbed09ad9d577955691b4c061b61b602406d1 Mon Sep 17 00:00:00 2001 From: Greg Kurz Date: Fri, 14 Jun 2019 15:09:02 +0200 Subject: [PATCH] hw: Nuke hw_compat_4_0_1 and pc_compat_4_0_1 Commit c87759ce876a fixed a regression affecting pc-q35 machines by introducing a new pc-q35-4.0.1 machine version to be used instead of pc-q35-4.0. The only purpose was to revert the default behaviour of not using split irqchip, but the change also introduced the usual hw_compat and pc_compat bits, and wired them for pc-q35 only. This raises questions when it comes to add new compat properties for 4.0* machine versions of any architecture. Where to add them ? In 4.0, 4.0.1 or both ? Error prone. Another possibility would be to teach all other architectures about 4.0.1. This solution isn't satisfying, especially since this is a pc-q35 specific issue. It turns out that the split irqchip default is handled in the machine option function and doesn't involve compat lists at all. Drop all the 4.0.1 compat lists and use the 4.0 ones instead in the 4.0.1 machine option function. Move the compat props that were added to the 4.0.1 since c87759ce876a to 4.0. Even if only hw_compat_4_0_1 had an impact on other architectures, drop pc_compat_4_0_1 as well for consistency. Fixes: c87759ce876a "q35: Revert to kernel irqchip" Suggested-by: Dr. David Alan Gilbert Signed-off-by: Greg Kurz Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Michael S. Tsirkin Message-Id: <156051774276.244890.8660277280145466396.stgit@bahia.lan> Signed-off-by: Paolo Bonzini --- hw/core/machine.c | 5 +---- hw/i386/pc.c | 3 --- hw/i386/pc_q35.c | 12 ++++++++---- include/hw/boards.h | 3 --- include/hw/i386/pc.h | 3 --- 5 files changed, 9 insertions(+), 17 deletions(-) diff --git a/hw/core/machine.c b/hw/core/machine.c index 84ebb8d247..ea5a01aa49 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -24,16 +24,13 @@ #include "hw/pci/pci.h" #include "hw/mem/nvdimm.h" -GlobalProperty hw_compat_4_0_1[] = { +GlobalProperty hw_compat_4_0[] = { { "VGA", "edid", "false" }, { "secondary-vga", "edid", "false" }, { "bochs-display", "edid", "false" }, { "virtio-vga", "edid", "false" }, { "virtio-gpu-pci", "edid", "false" }, }; -const size_t hw_compat_4_0_1_len = G_N_ELEMENTS(hw_compat_4_0_1); - -GlobalProperty hw_compat_4_0[] = {}; const size_t hw_compat_4_0_len = G_N_ELEMENTS(hw_compat_4_0); GlobalProperty hw_compat_3_1[] = { diff --git a/hw/i386/pc.c b/hw/i386/pc.c index e41192becd..e96360b47a 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -111,9 +111,6 @@ struct hpet_fw_config hpet_cfg = {.count = UINT8_MAX}; /* Physical Address of PVH entry point read from kernel ELF NOTE */ static size_t pvh_start_addr; -GlobalProperty pc_compat_4_0_1[] = {}; -const size_t pc_compat_4_0_1_len = G_N_ELEMENTS(pc_compat_4_0_1); - GlobalProperty pc_compat_4_0[] = {}; const size_t pc_compat_4_0_len = G_N_ELEMENTS(pc_compat_4_0); diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index dcddc64662..57232aed6b 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -378,8 +378,13 @@ static void pc_q35_4_0_1_machine_options(MachineClass *m) { pc_q35_4_1_machine_options(m); m->alias = NULL; - compat_props_add(m->compat_props, hw_compat_4_0_1, hw_compat_4_0_1_len); - compat_props_add(m->compat_props, pc_compat_4_0_1, pc_compat_4_0_1_len); + /* + * This is the default machine for the 4.0-stable branch. It is basically + * a 4.0 that doesn't use split irqchip by default. It MUST hence apply the + * 4.0 compat props. + */ + compat_props_add(m->compat_props, hw_compat_4_0, hw_compat_4_0_len); + compat_props_add(m->compat_props, pc_compat_4_0, pc_compat_4_0_len); } DEFINE_Q35_MACHINE(v4_0_1, "pc-q35-4.0.1", NULL, @@ -390,8 +395,7 @@ static void pc_q35_4_0_machine_options(MachineClass *m) pc_q35_4_0_1_machine_options(m); m->default_kernel_irqchip_split = true; m->alias = NULL; - compat_props_add(m->compat_props, hw_compat_4_0, hw_compat_4_0_len); - compat_props_add(m->compat_props, pc_compat_4_0, pc_compat_4_0_len); + /* Compat props are applied by the 4.0.1 machine */ } DEFINE_Q35_MACHINE(v4_0, "pc-q35-4.0", NULL, diff --git a/include/hw/boards.h b/include/hw/boards.h index b7362af3f1..eaa050a7ab 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -293,9 +293,6 @@ struct MachineState { } \ type_init(machine_initfn##_register_types) -extern GlobalProperty hw_compat_4_0_1[]; -extern const size_t hw_compat_4_0_1_len; - extern GlobalProperty hw_compat_4_0[]; extern const size_t hw_compat_4_0_len; diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index a7d0b87166..c54cc54a47 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -293,9 +293,6 @@ int e820_add_entry(uint64_t, uint64_t, uint32_t); int e820_get_num_entries(void); bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *); -extern GlobalProperty pc_compat_4_0_1[]; -extern const size_t pc_compat_4_0_1_len; - extern GlobalProperty pc_compat_4_0[]; extern const size_t pc_compat_4_0_len; -- 2.11.4.GIT