On Fri, 2007-11-02 at 05:36 -0500, Jerone Young wrote:
> # HG changeset patch
> # User Jerone Young <[EMAIL PROTECTED]>
> # Date 1193996153 18000
> # Node ID 5900e2b0ebdee721ae651070fcd325363691e25a
> # Parent 6ce27ddeb45df182e923060ae3abe699ce704ca3
> Move kvm_context to kvmctl.h
>
> This patch moves kvm_context from libkvm.c to kvm-context.h. This is so
> other files are able to see members of kvm_context. Also you should
> allways declare stuff like this in a header anyway. Also moved are
> delcrations MAX_VCPU, KVM_MAX_NUM_MEM_REGIONS, PAGE_SIZE & PAGE_MASK
> to kvm-x86.h.
>
> The idea here is kvm-$(ARCH).h will be headers for interal use by
> libkvm. Headers name libkvm-$(ARCH) will be functions that are
> arch specific that will be exposed to a user.
>
> Signed-off-by: Jerone Young <[EMAIL PROTECTED]>
>
> diff --git a/libkvm/config-i386.mak b/libkvm/config-i386.mak
> --- a/libkvm/config-i386.mak
> +++ b/libkvm/config-i386.mak
> @@ -1,2 +1,4 @@
>
> LIBDIR := /lib
> +CFLAGS += -m32
> +CFLAGS += -D__i386__
> diff --git a/libkvm/config-x86_64.mak b/libkvm/config-x86_64.mak
> --- a/libkvm/config-x86_64.mak
> +++ b/libkvm/config-x86_64.mak
> @@ -1,2 +1,5 @@
>
> LIBDIR := /lib64
> +CFLAGS += -m64
> +CFLAGS += -D__x86_64__
These shouldn't be needed since libkvm/Makefile is now
including ../user/config.mak . (Questionable IMHO, but that's already
committed. :)
> diff --git a/libkvm/kvm-context.h b/libkvm/kvm-context.h
> new file mode 100644
> --- /dev/null
> +++ b/libkvm/kvm-context.h
> @@ -0,0 +1,31 @@
> +#ifndef KVM_CONTEXT_H
> +#define KVM_CONTEXT_H
> +
> +/**
> + * \brief The KVM context
> + *
> + * The verbose KVM context
> + */
> +
> +struct kvm_context {
> + /// Filedescriptor to /dev/kvm
> + int fd;
> + int vm_fd;
> + int vcpu_fd[MAX_VCPUS];
> + struct kvm_run *run[MAX_VCPUS];
> + /// Callbacks that KVM uses to emulate various unvirtualizable
> functionality
> + struct kvm_callbacks *callbacks;
> + void *opaque;
> + /// A pointer to the memory used as the physical memory for the guest
> + void *physical_memory;
> + /// is dirty pages logging enabled for all regions or not
> + int dirty_pages_log_all;
> + /// memory regions parameters
> + struct kvm_memory_region mem_regions[KVM_MAX_NUM_MEM_REGIONS];
> + /// do not create in-kernel irqchip if set
> + int no_irqchip_creation;
> + /// in-kernel irqchip status
> + int irqchip_in_kernel;
> +};
> +
> +#endif
This doesn't work because kvm_memory_region, MAX_VCPUS, and
KVM_MAX_NUM_MEM_REGIONS are undefined here. I don't think kvm_context
needs its own header anyways, and combining it into the non-exported
kvm-common.h will simplify things.
> diff --git a/libkvm/kvm-x86.h b/libkvm/kvm-x86.h
> new file mode 100644
> --- /dev/null
> +++ b/libkvm/kvm-x86.h
> @@ -0,0 +1,17 @@
> +/* This header is for functions & variables that will ONLY be
> + * used inside libkvm for x86.
> + * THESE ARE NOT EXPOSED TO THE USER AND ARE ONLY FOR USE
> + * WITHIN LIBKVM.
> + */
> +#ifndef KVM_X86_H
> +#define KVM_X86_H
> +
> +/* FIXME: share this number with kvm */
> +/* FIXME: or dynamically alloc/realloc regions */
> +#define KVM_MAX_NUM_MEM_REGIONS 8u
> +#define MAX_VCPUS 4
These should be common until proven otherwise, so move into
kvm-common.h.
> +#define PAGE_SIZE 4096ul
> +#define PAGE_MASK (~(PAGE_SIZE - 1))
> +
> +#endif
Userspace should never do this, and should always use getpagesize(2)
instead. (I know it's not your fault.)
Once you change those two things, kvm-x86.h disappears (unless you need
to create it later in the series).
--
Hollis Blanchard
IBM Linux Technology Center
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