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x86/tdx: Rename tdx_parse_tdinfo() to tdx_setup()

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Rename tdx_parse_tdinfo() to tdx_setup() and move setting NOTIFY_ENABLES
there.

The function will be extended to adjust TD configuration.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Kai Huang <kai.huang@intel.com>
Link: https://lore.kernel.org/all/20241104103803.195705-3-kirill.shutemov%40linux.intel.com
This commit is contained in:
Kirill A. Shutemov 2024-11-04 12:38:01 +02:00 • committed by Dave Hansen
parent 5081e8fadb
commit b064043d95
1 changed files with 8 additions and 5 deletions
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13
arch/x86/coco/tdx/tdx.c
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@ -194,7 +194,7 @@ static void __noreturn tdx_panic(const char *msg)
__tdx_hypercall(&args);
}
static void tdx_parse_tdinfo(u64 *cc_mask)
static void tdx_setup(u64 *cc_mask)
{
struct tdx_module_args args = {};
unsigned int gpa_width;
@ -219,6 +219,9 @@ static void tdx_parse_tdinfo(u64 *cc_mask)
gpa_width = args.rcx & GENMASK(5, 0);
*cc_mask = BIT_ULL(gpa_width - 1);
/* Kernel does not use NOTIFY_ENABLES and does not need random #VEs */
tdg_vm_wr(TDCS_NOTIFY_ENABLES, 0, -1ULL);
/*
* The kernel can not handle #VE's when accessing normal kernel
* memory. Ensure that no #VE will be delivered for accesses to
@ -969,11 +972,11 @@ void __init tdx_early_init(void)
setup_force_cpu_cap(X86_FEATURE_TSC_RELIABLE);
cc_vendor = CC_VENDOR_INTEL;
tdx_parse_tdinfo(&cc_mask);
cc_set_mask(cc_mask);
/* Kernel does not use NOTIFY_ENABLES and does not need random #VEs */
tdg_vm_wr(TDCS_NOTIFY_ENABLES, 0, -1ULL);
/* Configure the TD */
tdx_setup(&cc_mask);
cc_set_mask(cc_mask);
/*
* All bits above GPA width are reserved and kernel treats shared bit