linux-kernel - [tip: x86/sev] x86/coco: Get rid of accessor functions

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Date:   Tue, 09 May 2023 10:58:18 -0000
From:   "tip-bot2 for Borislav Petkov (AMD)" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     "Borislav Petkov (AMD)" <bp@...en8.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: x86/sev] x86/coco: Get rid of accessor functions

The following commit has been merged into the x86/sev branch of tip:

Commit-ID:     da86eb9611840772a459693832e54c63cbcc040a
Gitweb:        https://git.kernel.org/tip/da86eb9611840772a459693832e54c63cbcc040a
Author:        Borislav Petkov (AMD) <bp@...en8.de>
AuthorDate:    Mon, 08 May 2023 12:44:28 +02:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Tue, 09 May 2023 12:53:16 +02:00

x86/coco: Get rid of accessor functions

cc_vendor is __ro_after_init and thus can be used directly.

No functional changes.

Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Link: https://lore.kernel.org/r/20230508121957.32341-1-bp@alien8.de
---
 arch/x86/coco/core.c               |  2 +-
 arch/x86/coco/tdx/tdx.c            |  2 +-
 arch/x86/hyperv/ivm.c              |  2 +-
 arch/x86/include/asm/coco.h        | 19 +------------------
 arch/x86/mm/mem_encrypt_identity.c |  2 +-
 5 files changed, 5 insertions(+), 22 deletions(-)

diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c
index df10e75..eeec998 100644
--- a/arch/x86/coco/core.c
+++ b/arch/x86/coco/core.c
@@ -13,7 +13,7 @@
 #include <asm/coco.h>
 #include <asm/processor.h>
 
-enum cc_vendor cc_vendor __ro_after_init;
+enum cc_vendor cc_vendor __ro_after_init = CC_VENDOR_NONE;
 static u64 cc_mask __ro_after_init;
 
 static bool noinstr intel_cc_platform_has(enum cc_attr attr)
diff --git a/arch/x86/coco/tdx/tdx.c b/arch/x86/coco/tdx/tdx.c
index e146b59..971c6cf 100644
--- a/arch/x86/coco/tdx/tdx.c
+++ b/arch/x86/coco/tdx/tdx.c
@@ -852,7 +852,7 @@ void __init tdx_early_init(void)
 
 	setup_force_cpu_cap(X86_FEATURE_TDX_GUEST);
 
-	cc_set_vendor(CC_VENDOR_INTEL);
+	cc_vendor = CC_VENDOR_INTEL;
 	tdx_parse_tdinfo(&cc_mask);
 	cc_set_mask(cc_mask);
 
diff --git a/arch/x86/hyperv/ivm.c b/arch/x86/hyperv/ivm.c
index cc92388..868f5de 100644
--- a/arch/x86/hyperv/ivm.c
+++ b/arch/x86/hyperv/ivm.c
@@ -364,7 +364,7 @@ void __init hv_vtom_init(void)
 	 * Set it here to indicate a vTOM VM.
 	 */
 	sev_status = MSR_AMD64_SNP_VTOM;
-	cc_set_vendor(CC_VENDOR_AMD);
+	cc_vendor = CC_VENDOR_AMD;
 	cc_set_mask(ms_hyperv.shared_gpa_boundary);
 	physical_mask &= ms_hyperv.shared_gpa_boundary - 1;
 
diff --git a/arch/x86/include/asm/coco.h b/arch/x86/include/asm/coco.h
index eb08796..6ae2d16 100644
--- a/arch/x86/include/asm/coco.h
+++ b/arch/x86/include/asm/coco.h
@@ -10,30 +10,13 @@ enum cc_vendor {
 	CC_VENDOR_INTEL,
 };
 
-#ifdef CONFIG_ARCH_HAS_CC_PLATFORM
 extern enum cc_vendor cc_vendor;
 
-static inline enum cc_vendor cc_get_vendor(void)
-{
-	return cc_vendor;
-}
-
-static inline void cc_set_vendor(enum cc_vendor vendor)
-{
-	cc_vendor = vendor;
-}
-
+#ifdef CONFIG_ARCH_HAS_CC_PLATFORM
 void cc_set_mask(u64 mask);
 u64 cc_mkenc(u64 val);
 u64 cc_mkdec(u64 val);
 #else
-static inline enum cc_vendor cc_get_vendor(void)
-{
-	return CC_VENDOR_NONE;
-}
-
-static inline void cc_set_vendor(enum cc_vendor vendor) { }
-
 static inline u64 cc_mkenc(u64 val)
 {
 	return val;
diff --git a/arch/x86/mm/mem_encrypt_identity.c b/arch/x86/mm/mem_encrypt_identity.c
index c6efcf5..bfe22fd 100644
--- a/arch/x86/mm/mem_encrypt_identity.c
+++ b/arch/x86/mm/mem_encrypt_identity.c
@@ -612,7 +612,7 @@ void __init sme_enable(struct boot_params *bp)
 out:
 	if (sme_me_mask) {
 		physical_mask &= ~sme_me_mask;
-		cc_set_vendor(CC_VENDOR_AMD);
+		cc_vendor = CC_VENDOR_AMD;
 		cc_set_mask(sme_me_mask);
 	}
 }