Re: [PATCH 01/22] mini-os: resync xen headers

[Samuel Thibault <samuel.thibault@ens-lyon.org>]

Juergen Gross, on Tue 23 Aug 2016 17:15:47 +0200, wrote:
> Use the latest Xen headers.
> 
> Signed-off-by: Juergen Gross <jgross@suse.com>

Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

> ---
>  include/xen/arch-x86/hvm/start_info.h | 98 +++++++++++++++++++++++++++++++++++
>  include/xen/elfnote.h                 | 12 ++++-
>  2 files changed, 109 insertions(+), 1 deletion(-)
>  create mode 100644 include/xen/arch-x86/hvm/start_info.h
> 
> diff --git a/include/xen/arch-x86/hvm/start_info.h b/include/xen/arch-x86/hvm/start_info.h
> new file mode 100644
> index 0000000..6484159
> --- /dev/null
> +++ b/include/xen/arch-x86/hvm/start_info.h
> @@ -0,0 +1,98 @@
> +/*
> + * Permission is hereby granted, free of charge, to any person obtaining a copy
> + * of this software and associated documentation files (the "Software"), to
> + * deal in the Software without restriction, including without limitation the
> + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
> + * sell copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
> + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> + * DEALINGS IN THE SOFTWARE.
> + *
> + * Copyright (c) 2016, Citrix Systems, Inc.
> + */
> +
> +#ifndef __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__
> +#define __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__
> +
> +/*
> + * Start of day structure passed to PVH guests and to HVM guests in %ebx.
> + *
> + * NOTE: nothing will be loaded at physical address 0, so a 0 value in any
> + * of the address fields should be treated as not present.
> + *
> + *  0 +----------------+
> + *    | magic          | Contains the magic value XEN_HVM_START_MAGIC_VALUE
> + *    |                | ("xEn3" with the 0x80 bit of the "E" set).
> + *  4 +----------------+
> + *    | version        | Version of this structure. Current version is 0. New
> + *    |                | versions are guaranteed to be backwards-compatible.
> + *  8 +----------------+
> + *    | flags          | SIF_xxx flags.
> + * 12 +----------------+
> + *    | nr_modules     | Number of modules passed to the kernel.
> + * 16 +----------------+
> + *    | modlist_paddr  | Physical address of an array of modules
> + *    |                | (layout of the structure below).
> + * 24 +----------------+
> + *    | cmdline_paddr  | Physical address of the command line,
> + *    |                | a zero-terminated ASCII string.
> + * 32 +----------------+
> + *    | rsdp_paddr     | Physical address of the RSDP ACPI data structure.
> + * 40 +----------------+
> + *
> + * The layout of each entry in the module structure is the following:
> + *
> + *  0 +----------------+
> + *    | paddr          | Physical address of the module.
> + *  8 +----------------+
> + *    | size           | Size of the module in bytes.
> + * 16 +----------------+
> + *    | cmdline_paddr  | Physical address of the command line,
> + *    |                | a zero-terminated ASCII string.
> + * 24 +----------------+
> + *    | reserved       |
> + * 32 +----------------+
> + *
> + * The address and sizes are always a 64bit little endian unsigned integer.
> + *
> + * NB: Xen on x86 will always try to place all the data below the 4GiB
> + * boundary.
> + */
> +#define XEN_HVM_START_MAGIC_VALUE 0x336ec578
> +
> +/*
> + * C representation of the x86/HVM start info layout.
> + *
> + * The canonical definition of this layout is above, this is just a way to
> + * represent the layout described there using C types.
> + */
> +struct hvm_start_info {
> +    uint32_t magic;             /* Contains the magic value 0x336ec578       */
> +                                /* ("xEn3" with the 0x80 bit of the "E" set).*/
> +    uint32_t version;           /* Version of this structure.                */
> +    uint32_t flags;             /* SIF_xxx flags.                            */
> +    uint32_t nr_modules;        /* Number of modules passed to the kernel.   */
> +    uint64_t modlist_paddr;     /* Physical address of an array of           */
> +                                /* hvm_modlist_entry.                        */
> +    uint64_t cmdline_paddr;     /* Physical address of the command line.     */
> +    uint64_t rsdp_paddr;        /* Physical address of the RSDP ACPI data    */
> +                                /* structure.                                */
> +};
> +
> +struct hvm_modlist_entry {
> +    uint64_t paddr;             /* Physical address of the module.           */
> +    uint64_t size;              /* Size of the module in bytes.              */
> +    uint64_t cmdline_paddr;     /* Physical address of the command line.     */
> +    uint64_t reserved;
> +};
> +
> +#endif /* __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__ */
> diff --git a/include/xen/elfnote.h b/include/xen/elfnote.h
> index 3824a94..353985f 100644
> --- a/include/xen/elfnote.h
> +++ b/include/xen/elfnote.h
> @@ -200,9 +200,19 @@
>  #define XEN_ELFNOTE_SUPPORTED_FEATURES 17
>  
>  /*
> + * Physical entry point into the kernel.
> + *
> + * 32bit entry point into the kernel. When requested to launch the
> + * guest kernel in a HVM container, Xen will use this entry point to
> + * launch the guest in 32bit protected mode with paging disabled.
> + * Ignored otherwise.
> + */
> +#define XEN_ELFNOTE_PHYS32_ENTRY 18
> +
> +/*
>   * The number of the highest elfnote defined.
>   */
> -#define XEN_ELFNOTE_MAX XEN_ELFNOTE_SUPPORTED_FEATURES
> +#define XEN_ELFNOTE_MAX XEN_ELFNOTE_PHYS32_ENTRY
>  
>  /*
>   * System information exported through crash notes.
> -- 
> 2.6.6
> 

-- 
Samuel
> [Linux] c'est une philosophie un art de vivre, un état intérieur,
> une sorte de fluide qui nous entoure et nous pénètre.
Fais tourner stp !
-+- Guillaume in Guide du linuxien pervers - "Tous drogués j'vous dis !"

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