6.6-stable review patch. If anyone has any objections, please let me know.
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From: Kai Huang kai.huang@intel.com
[ Upstream commit f0024dbfc48d8814d915eb5bd5253496b9b8a6df ]
The TDX spec names all TDCALLs with prefix "TDG". Currently, the kernel doesn't follow such convention for the macros of those TDCALLs but uses prefix "TDX_" for all of them. Although it's arguable whether the TDX spec names those TDCALLs properly, it's better for the kernel to follow the spec when naming those macros.
Change all macros of TDCALLs to make them consistent with the spec. As a bonus, they get distinguished easily from the host-side SEAMCALLs, which all have prefix "TDH".
No functional change intended.
Signed-off-by: Kai Huang kai.huang@intel.com Signed-off-by: Dave Hansen dave.hansen@linux.intel.com Reviewed-by: Kirill A. Shutemov kirill.shutemov@linux.intel.com Reviewed-by: Kuppuswamy Sathyanarayanan sathyanarayanan.kuppuswamy@linux.intel.com Acked-by: Peter Zijlstra (Intel) peterz@infradead.org Link: https://lore.kernel.org/all/516dccd0bd8fb9a0b6af30d25bb2d971aa03d598.1692096... Stable-dep-of: f65aa0ad79fc ("x86/tdx: Dynamically disable SEPT violations from causing #VEs") Signed-off-by: Sasha Levin sashal@kernel.org --- arch/x86/coco/tdx/tdx-shared.c | 4 ++-- arch/x86/coco/tdx/tdx.c | 8 ++++---- arch/x86/include/asm/shared/tdx.h | 10 +++++----- 3 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/arch/x86/coco/tdx/tdx-shared.c b/arch/x86/coco/tdx/tdx-shared.c index ef20ddc37b58a..f10cd3e4a04ed 100644 --- a/arch/x86/coco/tdx/tdx-shared.c +++ b/arch/x86/coco/tdx/tdx-shared.c @@ -35,7 +35,7 @@ static unsigned long try_accept_one(phys_addr_t start, unsigned long len, }
tdcall_rcx = start | page_size; - if (__tdx_module_call(TDX_ACCEPT_PAGE, tdcall_rcx, 0, 0, 0, NULL)) + if (__tdx_module_call(TDG_MEM_PAGE_ACCEPT, tdcall_rcx, 0, 0, 0, NULL)) return 0;
return accept_size; @@ -45,7 +45,7 @@ bool tdx_accept_memory(phys_addr_t start, phys_addr_t end) { /* * For shared->private conversion, accept the page using - * TDX_ACCEPT_PAGE TDX module call. + * TDG_MEM_PAGE_ACCEPT TDX module call. */ while (start < end) { unsigned long len = end - start; diff --git a/arch/x86/coco/tdx/tdx.c b/arch/x86/coco/tdx/tdx.c index 905ac8a3f7165..fd389b137fab8 100644 --- a/arch/x86/coco/tdx/tdx.c +++ b/arch/x86/coco/tdx/tdx.c @@ -93,7 +93,7 @@ int tdx_mcall_get_report0(u8 *reportdata, u8 *tdreport) { u64 ret;
- ret = __tdx_module_call(TDX_GET_REPORT, virt_to_phys(tdreport), + ret = __tdx_module_call(TDG_MR_REPORT, virt_to_phys(tdreport), virt_to_phys(reportdata), TDREPORT_SUBTYPE_0, 0, NULL); if (ret) { @@ -154,7 +154,7 @@ static void tdx_parse_tdinfo(u64 *cc_mask) * Guest-Host-Communication Interface (GHCI), section 2.4.2 TDCALL * [TDG.VP.INFO]. */ - tdx_module_call(TDX_GET_INFO, 0, 0, 0, 0, &out); + tdx_module_call(TDG_VP_INFO, 0, 0, 0, 0, &out);
/* * The highest bit of a guest physical address is the "sharing" bit. @@ -600,7 +600,7 @@ void tdx_get_ve_info(struct ve_info *ve) * Note, the TDX module treats virtual NMIs as inhibited if the #VE * valid flag is set. It means that NMI=>#VE will not result in a #DF. */ - tdx_module_call(TDX_GET_VEINFO, 0, 0, 0, 0, &out); + tdx_module_call(TDG_VP_VEINFO_GET, 0, 0, 0, 0, &out);
/* Transfer the output parameters */ ve->exit_reason = out.rcx; @@ -780,7 +780,7 @@ void __init tdx_early_init(void) cc_set_mask(cc_mask);
/* Kernel does not use NOTIFY_ENABLES and does not need random #VEs */ - tdx_module_call(TDX_WR, 0, TDCS_NOTIFY_ENABLES, 0, -1ULL, NULL); + tdx_module_call(TDG_VM_WR, 0, TDCS_NOTIFY_ENABLES, 0, -1ULL, NULL);
/* * All bits above GPA width are reserved and kernel treats shared bit diff --git a/arch/x86/include/asm/shared/tdx.h b/arch/x86/include/asm/shared/tdx.h index 7513b3bb69b7e..78f109446da6f 100644 --- a/arch/x86/include/asm/shared/tdx.h +++ b/arch/x86/include/asm/shared/tdx.h @@ -11,11 +11,11 @@ #define TDX_IDENT "IntelTDX "
/* TDX module Call Leaf IDs */ -#define TDX_GET_INFO 1 -#define TDX_GET_VEINFO 3 -#define TDX_GET_REPORT 4 -#define TDX_ACCEPT_PAGE 6 -#define TDX_WR 8 +#define TDG_VP_INFO 1 +#define TDG_VP_VEINFO_GET 3 +#define TDG_MR_REPORT 4 +#define TDG_MEM_PAGE_ACCEPT 6 +#define TDG_VM_WR 8
/* TDCS fields. To be used by TDG.VM.WR and TDG.VM.RD module calls */ #define TDCS_NOTIFY_ENABLES 0x9100000000000010