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165e773538
Now that VMXON can be done without bouncing through KVM, do TDX-Module initialization during subsys init (specifically before module_init() so that it runs before KVM when both are built-in). Aside from the obvious benefits of separating core TDX code from KVM, this will allow tagging a pile of TDX functions and globals as being __init and __ro_after_init. Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Chao Gao <chao.gao@intel.com> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Tested-by: Chao Gao <chao.gao@intel.com> Tested-by: Sagi Shahar <sagis@google.com> Link: https://patch.msgid.link/20260214012702.2368778-12-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _X86_VIRT_TDX_H
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#define _X86_VIRT_TDX_H
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#include <linux/bits.h>
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/*
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* This file contains both macros and data structures defined by the TDX
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* architecture and Linux defined software data structures and functions.
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* The two should not be mixed together for better readability. The
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* architectural definitions come first.
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*/
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/*
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* TDX module SEAMCALL leaf functions
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*/
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#define TDH_VP_ENTER 0
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#define TDH_MNG_ADDCX 1
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#define TDH_MEM_PAGE_ADD 2
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#define TDH_MEM_SEPT_ADD 3
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#define TDH_VP_ADDCX 4
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#define TDH_MEM_PAGE_AUG 6
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#define TDH_MEM_RANGE_BLOCK 7
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#define TDH_MNG_KEY_CONFIG 8
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#define TDH_MNG_CREATE 9
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#define TDH_MNG_RD 11
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#define TDH_MR_EXTEND 16
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#define TDH_MR_FINALIZE 17
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#define TDH_VP_FLUSH 18
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#define TDH_MNG_VPFLUSHDONE 19
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#define TDH_VP_CREATE 10
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#define TDH_MNG_KEY_FREEID 20
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#define TDH_MNG_INIT 21
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#define TDH_VP_INIT 22
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#define TDH_PHYMEM_PAGE_RDMD 24
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#define TDH_VP_RD 26
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#define TDH_PHYMEM_PAGE_RECLAIM 28
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#define TDH_MEM_PAGE_REMOVE 29
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#define TDH_SYS_KEY_CONFIG 31
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#define TDH_SYS_INIT 33
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#define TDH_SYS_RD 34
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#define TDH_SYS_LP_INIT 35
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#define TDH_SYS_TDMR_INIT 36
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#define TDH_MEM_TRACK 38
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#define TDH_PHYMEM_CACHE_WB 40
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#define TDH_PHYMEM_PAGE_WBINVD 41
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#define TDH_VP_WR 43
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#define TDH_SYS_CONFIG 45
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/*
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* SEAMCALL leaf:
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*
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* Bit 15:0 Leaf number
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* Bit 23:16 Version number
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*/
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#define TDX_VERSION_SHIFT 16
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/* TDX page types */
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#define PT_NDA 0x0
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#define PT_RSVD 0x1
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struct tdmr_reserved_area {
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u64 offset;
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u64 size;
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} __packed;
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#define TDMR_INFO_ALIGNMENT 512
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#define TDMR_INFO_PA_ARRAY_ALIGNMENT 512
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struct tdmr_info {
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u64 base;
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u64 size;
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u64 pamt_1g_base;
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u64 pamt_1g_size;
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u64 pamt_2m_base;
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u64 pamt_2m_size;
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u64 pamt_4k_base;
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u64 pamt_4k_size;
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/*
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* The actual number of reserved areas depends on the value of
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* field MD_FIELD_ID_MAX_RESERVED_PER_TDMR in the TDX module
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* global metadata.
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*/
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DECLARE_FLEX_ARRAY(struct tdmr_reserved_area, reserved_areas);
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} __packed __aligned(TDMR_INFO_ALIGNMENT);
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/* Bit definitions of TDX_FEATURES0 metadata field */
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#define TDX_FEATURES0_NO_RBP_MOD BIT(18)
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/*
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* Do not put any hardware-defined TDX structure representations below
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* this comment!
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*/
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struct tdx_memblock {
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struct list_head list;
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unsigned long start_pfn;
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unsigned long end_pfn;
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int nid;
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};
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/* Warn if kernel has less than TDMR_NR_WARN TDMRs after allocation */
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#define TDMR_NR_WARN 4
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struct tdmr_info_list {
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void *tdmrs; /* Flexible array to hold 'tdmr_info's */
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int nr_consumed_tdmrs; /* How many 'tdmr_info's are in use */
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/* Metadata for finding target 'tdmr_info' and freeing @tdmrs */
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int tdmr_sz; /* Size of one 'tdmr_info' */
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int max_tdmrs; /* How many 'tdmr_info's are allocated */
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};
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#endif
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