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Re: [libvirt] [PATCH] qemu: Check for ia64 kvm




 
> From: crobinso redhat com
> To: libvirt-list redhat com
> CC: x_k_123 hotmail com; crobinso redhat com
> Subject: [PATCH] qemu: Check for ia64 kvm
> Date: Wed, 13 Jan 2010 15:50:06 -0500
>
> From: Dustin Xiong <x_k_123 hotmail com>
>
> Ported to current code. Untested, but builds fine.
>
> Signed-off-by: Cole Robinson <crobinso redhat com>
> ---
> src/qemu/qemu_conf.c | 7 +++++++
> 1 files changed, 7 insertions(+), 0 deletions(-)
>
> diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
> index d3da776..0d970d6 100644
> --- a/src/qemu/qemu_conf.c
> +++ b/src/qemu/qemu_conf.c
> @@ -373,12 +373,19 @@ static const struct qemu_feature_flags const arch_info_x86_64_flags [] = {
> { "apic", 1, 0 },
> };
>
> +static const struct qemu_feature_flags const arch_info_ia64_flags [] = {
> + { "acpi", 1, 1 },
> + { "a! pic", 1, 0 },
> +};
> +
> /* The archicture tables for supported QEMU archs */
> static const struct qemu_arch_info const arch_info_hvm[] = {
> { "i686", 32, NULL, "/usr/bin/qemu",
> "/usr/bin/qemu-system-x86_64", arch_info_i686_flags, 4 },
> { "x86_64", 64, NULL, "/usr/bin/qemu-system-x86_64",
> NULL, arch_info_x86_64_flags, 2 },
> + { "itanium", 64, NULL, "/usr/bin/qemu-system-ia64",
> + NULL, arch_info_ia64_flags, 2},
> { "arm", 32, NULL, "/usr/bin/qemu-system-arm", NULL, NULL, 0 },
> { "mips", 32, NULL, "/usr/bin/qemu-system-mips", NULL, NULL, 0 },
> { "mipsel", 32, NULL, "/usr/bin/qemu-system-mipsel", NULL, NULL, 0 },
> --
> 1.6.5.2
>

There another problem when you make the libvirt src on the arch of itanium, you need modify the function clone().
       On IA-64, a different system call is used:
       int __clone2(int (*fn)(void *),  void *child_stack_base,
                    size_t stack_size, int flags, void *arg, ...
                    /* pid_t *pid, struct user_desc *tls, pid_t *ctid */ );
       The  __clone2() system call operates in the same way as clone(), except
       that child_stack_base points to the lowest address of the child's stack
       area,  and  stack_size  specifies  the  size of the stack pointed to by
       child_stack_base.

The function clone() is used in /src/lxc_container.c.
 
-Dustin.


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