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

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[ Upstream commit b064043d9565786b385f85e6436ca5716bbd5552 ]

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
Stable-dep-of: f65aa0ad79fc ("x86/tdx: Dynamically disable SEPT violations from causing #VEs")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kirill A. Shutemov
2024-11-04 12:38:01 +02:00
committed by Greg Kroah-Hartman
parent d4e39b6f96
commit 44cb69dbec
1 changed files with 8 additions and 5 deletions
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13
arch/x86/coco/tdx/tdx.c
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@@ -169,7 +169,7 @@ 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;
@@ -194,6 +194,9 @@ 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
@@ -804,11 +807,11 @@ void __init tdx_early_init(void)
setup_force_cpu_cap(X86_FEATURE_TDX_GUEST);
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