From 1b53ecd909bc59bb5f54892a5cbb8721a3467ede Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Mon, 12 Aug 2019 07:23:34 +0200 Subject: [PATCH] memory: Fix type of IOMMUMemoryRegionClass member @parent_class MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit TYPE_IOMMU_MEMORY_REGION is a direct subtype of TYPE_MEMORY_REGION. Its instance struct is IOMMUMemoryRegion, and its first member is a MemoryRegion. Correct. Its class struct is IOMMUMemoryRegionClass, and its first member is a DeviceClass. Wrong. Messed up when commit 1221a474676 introduced the QOM type. It even included hw/qdev-core.h just for that. TYPE_MEMORY_REGION doesn't bother to define a class struct. This is fine, it simply defaults to its super-type TYPE_OBJECT's class struct ObjectClass. Changing IOMMUMemoryRegionClass's first member's type to ObjectClass would be a minimal fix, if a bit brittle: if TYPE_MEMORY_REGION ever acquired own class struct, we'd have to update IOMMUMemoryRegionClass to use it. Fix it the clean and robust way instead: give TYPE_MEMORY_REGION its own class struct MemoryRegionClass now, and use it for IOMMUMemoryRegionClass's first member. Revert the include of hw/qdev-core.h, and fix the few files that have come to rely on it. Cc: Paolo Bonzini Signed-off-by: Markus Armbruster Reviewed-by: Philippe Mathieu-Daudé Tested-by: Philippe Mathieu-Daudé Acked-by: Paolo Bonzini Message-Id: <20190812052359.30071-5-armbru@redhat.com> --- hw/display/vga-isa-mm.c | 1 + hw/net/pcnet.h | 1 + include/exec/memory.h | 10 ++++++++-- memory.c | 1 + 4 files changed, 11 insertions(+), 2 deletions(-) diff --git a/hw/display/vga-isa-mm.c b/hw/display/vga-isa-mm.c index 215e649719..a790f69b6d 100644 --- a/hw/display/vga-isa-mm.c +++ b/hw/display/vga-isa-mm.c @@ -22,6 +22,7 @@ * THE SOFTWARE. */ #include "qemu/osdep.h" +#include "qemu/bitops.h" #include "qemu/units.h" #include "hw/hw.h" #include "hw/display/vga.h" diff --git a/hw/net/pcnet.h b/hw/net/pcnet.h index 40831a7845..28d19a5c6f 100644 --- a/hw/net/pcnet.h +++ b/hw/net/pcnet.h @@ -8,6 +8,7 @@ #define PCNET_LOOPTEST_NOCRC 2 #include "exec/memory.h" +#include "hw/irq.h" /* BUS CONFIGURATION REGISTERS */ #define BCR_MSRDA 0 diff --git a/include/exec/memory.h b/include/exec/memory.h index bb0961ddb9..d99eb25d2e 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -20,12 +20,12 @@ #include "exec/hwaddr.h" #include "exec/memattrs.h" #include "exec/ramlist.h" +#include "qemu/bswap.h" #include "qemu/queue.h" #include "qemu/int128.h" #include "qemu/notify.h" #include "qom/object.h" #include "qemu/rcu.h" -#include "hw/qdev-core.h" #define RAM_ADDR_INVALID (~(ram_addr_t)0) @@ -205,6 +205,12 @@ struct MemoryRegionOps { } impl; }; +typedef struct MemoryRegionClass { + /* private */ + ObjectClass parent_class; +} MemoryRegionClass; + + enum IOMMUMemoryRegionAttr { IOMMU_ATTR_SPAPR_TCE_FD }; @@ -237,7 +243,7 @@ enum IOMMUMemoryRegionAttr { */ typedef struct IOMMUMemoryRegionClass { /* private */ - struct DeviceClass parent_class; + MemoryRegionClass parent_class; /* * Return a TLB entry that contains a given address. diff --git a/memory.c b/memory.c index 5d8c9a9234..09d9b254fd 100644 --- a/memory.c +++ b/memory.c @@ -3245,6 +3245,7 @@ void memory_region_init_rom_device(MemoryRegion *mr, static const TypeInfo memory_region_info = { .parent = TYPE_OBJECT, .name = TYPE_MEMORY_REGION, + .class_size = sizeof(MemoryRegionClass), .instance_size = sizeof(MemoryRegion), .instance_init = memory_region_initfn, .instance_finalize = memory_region_finalize, -- 2.11.4.GIT