The following commit has been merged into the x86/tdx branch of tip:
Commit-ID: b064043d9565786b385f85e6436ca5716bbd5552
Gitweb: https://git.kernel.org/tip/b064043d9565786b385f85e6436ca5716bbd5552
Author: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
AuthorDate: Mon, 04 Nov 2024 12:38:01 +02:00
Committer: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
CommitterDate: Thu, 07 Nov 2024 10:26:37 -08:00
x86/tdx: Rename tdx_parse_tdinfo() to tdx_setup()
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@xxxxxxxxxxxxxxx>
Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>
Reviewed-by: Kai Huang <kai.huang@xxxxxxxxx>
Link: https://lore.kernel.org/all/20241104103803.195705-3-kirill.shutemov%40linux.intel.com
---
arch/x86/coco/tdx/tdx.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/arch/x86/coco/tdx/tdx.c b/arch/x86/coco/tdx/tdx.c
index c74bb9e..28b321a 100644
--- a/arch/x86/coco/tdx/tdx.c
+++ b/arch/x86/coco/tdx/tdx.c
@@ -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
|