The following commit has been merged into the x86/cc branch of tip:
Commit-ID: 52e490dcb9e47e8dcf9d915214c6b9d79580d03e
Gitweb: https://git.kernel.org/tip/52e490dcb9e47e8dcf9d915214c6b9d79580d03e
Author: Borislav Petkov (AMD) <bp@xxxxxxxxx>
AuthorDate: Sat, 18 Mar 2023 12:56:33 +01:00
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Thu, 30 Mar 2023 11:59:58 +02:00
x86/coco: Export cc_vendor
It will be used in different checks in future changes. Export it
directly and drop the setter as it is a __ro_after_init variable anyway.
No functional changes.
[ tglx: Add accessor function ]
Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230318115634.9392-2-bp@xxxxxxxxx
---
arch/x86/coco/core.c | 13 ++++---------
arch/x86/coco/tdx/tdx.c | 2 +-
arch/x86/include/asm/coco.h | 16 +++++++++++++---
arch/x86/kernel/cpu/mshyperv.c | 2 +-
arch/x86/mm/mem_encrypt_identity.c | 2 +-
5 files changed, 20 insertions(+), 15 deletions(-)
diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c
index 49b44f8..684f0a9 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>
-static enum cc_vendor vendor __ro_after_init;
+enum cc_vendor cc_vendor __ro_after_init;
static u64 cc_mask __ro_after_init;
static bool intel_cc_platform_has(enum cc_attr attr)
@@ -83,7 +83,7 @@ static bool hyperv_cc_platform_has(enum cc_attr attr)
bool cc_platform_has(enum cc_attr attr)
{
- switch (vendor) {
+ switch (cc_vendor) {
case CC_VENDOR_AMD:
return amd_cc_platform_has(attr);
case CC_VENDOR_INTEL:
@@ -105,7 +105,7 @@ u64 cc_mkenc(u64 val)
* - for AMD, bit *set* means the page is encrypted
* - for Intel *clear* means encrypted.
*/
- switch (vendor) {
+ switch (cc_vendor) {
case CC_VENDOR_AMD:
return val | cc_mask;
case CC_VENDOR_INTEL:
@@ -118,7 +118,7 @@ u64 cc_mkenc(u64 val)
u64 cc_mkdec(u64 val)
{
/* See comment in cc_mkenc() */
- switch (vendor) {
+ switch (cc_vendor) {
case CC_VENDOR_AMD:
return val & ~cc_mask;
case CC_VENDOR_INTEL:
@@ -129,11 +129,6 @@ u64 cc_mkdec(u64 val)
}
EXPORT_SYMBOL_GPL(cc_mkdec);
-__init void cc_set_vendor(enum cc_vendor v)
-{
- vendor = v;
-}
-
__init void cc_set_mask(u64 mask)
{
cc_mask = mask;
diff --git a/arch/x86/coco/tdx/tdx.c b/arch/x86/coco/tdx/tdx.c
index 055300e..bab29cb 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/include/asm/coco.h b/arch/x86/include/asm/coco.h
index 3d98c3a..35d7aa9 100644
--- a/arch/x86/include/asm/coco.h
+++ b/arch/x86/include/asm/coco.h
@@ -11,13 +11,23 @@ enum cc_vendor {
CC_VENDOR_INTEL,
};
-void cc_set_vendor(enum cc_vendor v);
-void cc_set_mask(u64 mask);
-
#ifdef CONFIG_ARCH_HAS_CC_PLATFORM
+extern enum cc_vendor cc_vendor;
+
+static inline enum cc_vendor cc_get_vendor(void)
+{
+ return cc_vendor;
+}
+
+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 u64 cc_mkenc(u64 val)
{
return val;
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index f36dc2f..9f3fad3 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -412,7 +412,7 @@ static void __init ms_hyperv_init_platform(void)
/* Isolation VMs are unenlightened SEV-based VMs, thus this check: */
if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) {
if (hv_get_isolation_type() != HV_ISOLATION_TYPE_NONE)
- cc_set_vendor(CC_VENDOR_HYPERV);
+ cc_vendor = CC_VENDOR_HYPERV;
}
}
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);
}
}
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