linux-kernel - [PATCH 1/6] coco/tdx: Rename MSR access helpers

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Message-ID: <20250506092015.1849-2-jgross@suse.com>
Date: Tue,  6 May 2025 11:20:10 +0200
From: Juergen Gross <jgross@...e.com>
To: linux-kernel@...r.kernel.org,
	x86@...nel.org,
	linux-coco@...ts.linux.dev
Cc: xin@...or.com,
	Juergen Gross <jgross@...e.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 1/6] coco/tdx: Rename MSR access helpers

In order to avoid a name clash with some general MSR access helpers
after a future MSR infrastructure rework, rename the TDX specific
helpers.

Signed-off-by: Juergen Gross <jgross@...e.com>
---
 arch/x86/coco/tdx/tdx.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/coco/tdx/tdx.c b/arch/x86/coco/tdx/tdx.c
index edab6d6049be..49d79668f85f 100644
--- a/arch/x86/coco/tdx/tdx.c
+++ b/arch/x86/coco/tdx/tdx.c
@@ -428,7 +428,7 @@ static void __cpuidle tdx_safe_halt(void)
 	raw_local_irq_enable();
 }
 
-static int read_msr(struct pt_regs *regs, struct ve_info *ve)
+static int tdx_read_msr(struct pt_regs *regs, struct ve_info *ve)
 {
 	struct tdx_module_args args = {
 		.r10 = TDX_HYPERCALL_STANDARD,
@@ -449,7 +449,7 @@ static int read_msr(struct pt_regs *regs, struct ve_info *ve)
 	return ve_instr_len(ve);
 }
 
-static int write_msr(struct pt_regs *regs, struct ve_info *ve)
+static int tdx_write_msr(struct pt_regs *regs, struct ve_info *ve)
 {
 	struct tdx_module_args args = {
 		.r10 = TDX_HYPERCALL_STANDARD,
@@ -802,9 +802,9 @@ static int virt_exception_kernel(struct pt_regs *regs, struct ve_info *ve)
 	case EXIT_REASON_HLT:
 		return handle_halt(ve);
 	case EXIT_REASON_MSR_READ:
-		return read_msr(regs, ve);
+		return tdx_read_msr(regs, ve);
 	case EXIT_REASON_MSR_WRITE:
-		return write_msr(regs, ve);
+		return tdx_write_msr(regs, ve);
 	case EXIT_REASON_CPUID:
 		return handle_cpuid(regs, ve);
 	case EXIT_REASON_EPT_VIOLATION:
-- 
2.43.0