blob: 97674471fd1e24e28ccefc8ae7a2e6eb134e1d00 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2021-2022 Intel Corporation */
#undef pr_fmt
#define pr_fmt(fmt) "tdx: " fmt
#include <linux/cpufeature.h>
#include <asm/tdx.h>
void __init tdx_early_init(void)
{
u32 eax, sig[3];
cpuid_count(TDX_CPUID_LEAF_ID, 0, &eax, &sig[0], &sig[2], &sig[1]);
if (memcmp(TDX_IDENT, sig, sizeof(sig)))
return;
setup_force_cpu_cap(X86_FEATURE_TDX_GUEST);
pr_info("Guest detected\n");
}
|
