[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH 1/3] mini-os: take newest version of arch-x86/hvm/start_info.h
Juergen Gross, le sam. 18 juin 2022 12:48:14 +0200, a ecrit: > Update include/xen/arch-x86/hvm/start_info.h to the newest version > from the Xen tree. > > Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Reviewed-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx> > --- > include/xen/arch-x86/hvm/start_info.h | 63 ++++++++++++++++++++++++++- > 1 file changed, 62 insertions(+), 1 deletion(-) > > diff --git a/include/xen/arch-x86/hvm/start_info.h > b/include/xen/arch-x86/hvm/start_info.h > index 64841597..50af9ea2 100644 > --- a/include/xen/arch-x86/hvm/start_info.h > +++ b/include/xen/arch-x86/hvm/start_info.h > @@ -33,7 +33,7 @@ > * | 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 > + * | version | Version of this structure. Current version is 1. New > * | | versions are guaranteed to be backwards-compatible. > * 8 +----------------+ > * | flags | SIF_xxx flags. > @@ -48,6 +48,15 @@ > * 32 +----------------+ > * | rsdp_paddr | Physical address of the RSDP ACPI data structure. > * 40 +----------------+ > + * | memmap_paddr | Physical address of the (optional) memory map. Only > + * | | present in version 1 and newer of the structure. > + * 48 +----------------+ > + * | memmap_entries | Number of entries in the memory map table. Zero > + * | | if there is no memory map being provided. Only > + * | | present in version 1 and newer of the structure. > + * 52 +----------------+ > + * | reserved | Version 1 and newer only. > + * 56 +----------------+ > * > * The layout of each entry in the module structure is the following: > * > @@ -62,13 +71,51 @@ > * | reserved | > * 32 +----------------+ > * > + * The layout of each entry in the memory map table is as follows: > + * > + * 0 +----------------+ > + * | addr | Base address > + * 8 +----------------+ > + * | size | Size of mapping in bytes > + * 16 +----------------+ > + * | type | Type of mapping as defined between the hypervisor > + * | | and guest. See XEN_HVM_MEMMAP_TYPE_* values below. > + * 20 +----------------| > + * | reserved | > + * 24 +----------------+ > + * > * 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. > + * > + * Version numbers of the hvm_start_info structure have evolved like this: > + * > + * Version 0: Initial implementation. > + * > + * Version 1: Added the memmap_paddr/memmap_entries fields (plus 4 bytes of > + * padding) to the end of the hvm_start_info struct. These new > + * fields can be used to pass a memory map to the guest. The > + * memory map is optional and so guests that understand version 1 > + * of the structure must check that memmap_entries is non-zero > + * before trying to read the memory map. > */ > #define XEN_HVM_START_MAGIC_VALUE 0x336ec578 > > +/* > + * The values used in the type field of the memory map table entries are > + * defined below and match the Address Range Types as defined in the "System > + * Address Map Interfaces" section of the ACPI Specification. Please refer to > + * section 15 in version 6.2 of the ACPI spec: http://uefi.org/specifications > + */ > +#define XEN_HVM_MEMMAP_TYPE_RAM 1 > +#define XEN_HVM_MEMMAP_TYPE_RESERVED 2 > +#define XEN_HVM_MEMMAP_TYPE_ACPI 3 > +#define XEN_HVM_MEMMAP_TYPE_NVS 4 > +#define XEN_HVM_MEMMAP_TYPE_UNUSABLE 5 > +#define XEN_HVM_MEMMAP_TYPE_DISABLED 6 > +#define XEN_HVM_MEMMAP_TYPE_PMEM 7 > + > /* > * C representation of the x86/HVM start info layout. > * > @@ -86,6 +133,13 @@ struct hvm_start_info { > uint64_t cmdline_paddr; /* Physical address of the command line. > */ > uint64_t rsdp_paddr; /* Physical address of the RSDP ACPI data > */ > /* structure. > */ > + /* All following fields only present in version 1 and newer */ > + uint64_t memmap_paddr; /* Physical address of an array of > */ > + /* hvm_memmap_table_entry. > */ > + uint32_t memmap_entries; /* Number of entries in the memmap table. > */ > + /* Value will be zero if there is no memory > */ > + /* map being provided. > */ > + uint32_t reserved; /* Must be zero. > */ > }; > > struct hvm_modlist_entry { > @@ -95,4 +149,11 @@ struct hvm_modlist_entry { > uint64_t reserved; > }; > > +struct hvm_memmap_table_entry { > + uint64_t addr; /* Base address of the memory region > */ > + uint64_t size; /* Size of the memory region in bytes > */ > + uint32_t type; /* Mapping type > */ > + uint32_t reserved; /* Must be zero for Version 1. > */ > +}; > + > #endif /* __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__ */ > -- > 2.35.3 > -- Samuel --- Pour une évaluation indépendante, transparente et rigoureuse ! Je soutiens la Commission d'Évaluation de l'Inria.
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