From: "Borislav Petkov (AMD)" <[email protected]>
Hi,
as part of recent parallel CPU bringup needs, here are two cleanups.
Thx.
Borislav Petkov (AMD) (2):
x86/coco: Export cc_vendor
x86/sev: Get rid of special sev_es_enable_key
arch/x86/coco/core.c | 15 +++++----------
arch/x86/coco/tdx/tdx.c | 2 +-
arch/x86/include/asm/coco.h | 2 +-
arch/x86/include/asm/sev.h | 11 +++++++----
arch/x86/kernel/cpu/mshyperv.c | 2 +-
arch/x86/kernel/sev.c | 5 -----
arch/x86/mm/mem_encrypt_identity.c | 2 +-
7 files changed, 16 insertions(+), 23 deletions(-)
--
2.35.1
From: "Borislav Petkov (AMD)" <[email protected]>
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.
No functional changes.
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
---
arch/x86/coco/core.c | 13 ++++---------
arch/x86/coco/tdx/tdx.c | 2 +-
arch/x86/include/asm/coco.h | 2 +-
arch/x86/kernel/cpu/mshyperv.c | 2 +-
arch/x86/mm/mem_encrypt_identity.c | 2 +-
5 files changed, 8 insertions(+), 13 deletions(-)
diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c
index 49b44f881484..684f0a910475 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 055300e08fb3..bab29cbc6680 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 3d98c3a60d34..84fbf419989f 100644
--- a/arch/x86/include/asm/coco.h
+++ b/arch/x86/include/asm/coco.h
@@ -11,7 +11,7 @@ enum cc_vendor {
CC_VENDOR_INTEL,
};
-void cc_set_vendor(enum cc_vendor v);
+extern enum cc_vendor cc_vendor;
void cc_set_mask(u64 mask);
#ifdef CONFIG_ARCH_HAS_CC_PLATFORM
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index f36dc2f796c5..9f3fad3e69d5 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 88cccd65029d..f54497b8be4b 100644
--- a/arch/x86/mm/mem_encrypt_identity.c
+++ b/arch/x86/mm/mem_encrypt_identity.c
@@ -611,7 +611,7 @@ 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);
}
}
--
2.35.1
From: "Borislav Petkov (AMD)" <[email protected]>
A SEV-ES guest is active on AMD when CC_ATTR_GUEST_STATE_ENCRYPT is set.
I.e., MSR_AMD64_SEV, bit 1, SEV_ES_Enabled. So no need for a special
static key.
No functional changes.
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
---
arch/x86/coco/core.c | 2 +-
arch/x86/include/asm/sev.h | 11 +++++++----
arch/x86/kernel/sev.c | 5 -----
3 files changed, 8 insertions(+), 10 deletions(-)
diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c
index 684f0a910475..17f2b690a485 100644
--- a/arch/x86/coco/core.c
+++ b/arch/x86/coco/core.c
@@ -81,7 +81,7 @@ static bool hyperv_cc_platform_has(enum cc_attr attr)
return attr == CC_ATTR_GUEST_MEM_ENCRYPT;
}
-bool cc_platform_has(enum cc_attr attr)
+bool noinstr cc_platform_has(enum cc_attr attr)
{
switch (cc_vendor) {
case CC_VENDOR_AMD:
diff --git a/arch/x86/include/asm/sev.h b/arch/x86/include/asm/sev.h
index ebc271bb6d8e..1335781e4976 100644
--- a/arch/x86/include/asm/sev.h
+++ b/arch/x86/include/asm/sev.h
@@ -12,6 +12,7 @@
#include <asm/insn.h>
#include <asm/sev-common.h>
#include <asm/bootparam.h>
+#include <asm/coco.h>
#define GHCB_PROTOCOL_MIN 1ULL
#define GHCB_PROTOCOL_MAX 2ULL
@@ -134,24 +135,26 @@ struct snp_secrets_page_layout {
} __packed;
#ifdef CONFIG_AMD_MEM_ENCRYPT
-extern struct static_key_false sev_es_enable_key;
extern void __sev_es_ist_enter(struct pt_regs *regs);
extern void __sev_es_ist_exit(void);
static __always_inline void sev_es_ist_enter(struct pt_regs *regs)
{
- if (static_branch_unlikely(&sev_es_enable_key))
+ if (cc_vendor == CC_VENDOR_AMD &&
+ cc_platform_has(CC_ATTR_GUEST_STATE_ENCRYPT))
__sev_es_ist_enter(regs);
}
static __always_inline void sev_es_ist_exit(void)
{
- if (static_branch_unlikely(&sev_es_enable_key))
+ if (cc_vendor == CC_VENDOR_AMD &&
+ cc_platform_has(CC_ATTR_GUEST_STATE_ENCRYPT))
__sev_es_ist_exit();
}
extern int sev_es_setup_ap_jump_table(struct real_mode_header *rmh);
extern void __sev_es_nmi_complete(void);
static __always_inline void sev_es_nmi_complete(void)
{
- if (static_branch_unlikely(&sev_es_enable_key))
+ if (cc_vendor == CC_VENDOR_AMD &&
+ cc_platform_has(CC_ATTR_GUEST_STATE_ENCRYPT))
__sev_es_nmi_complete();
}
extern int __init sev_es_efi_map_ghcbs(pgd_t *pgd);
diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c
index 679026a640ef..4fdba49b6e38 100644
--- a/arch/x86/kernel/sev.c
+++ b/arch/x86/kernel/sev.c
@@ -111,8 +111,6 @@ struct ghcb_state {
};
static DEFINE_PER_CPU(struct sev_es_runtime_data*, runtime_data);
-DEFINE_STATIC_KEY_FALSE(sev_es_enable_key);
-
static DEFINE_PER_CPU(struct sev_es_save_area *, sev_vmsa);
struct sev_config {
@@ -1393,9 +1391,6 @@ void __init sev_es_init_vc_handling(void)
sev_es_terminate(SEV_TERM_SET_GEN, GHCB_SNP_UNSUPPORTED);
}
- /* Enable SEV-ES special handling */
- static_branch_enable(&sev_es_enable_key);
-
/* Initialize per-cpu GHCB pages */
for_each_possible_cpu(cpu) {
alloc_runtime_data(cpu);
--
2.35.1
On Sat, Mar 18 2023 at 12:56, Borislav Petkov wrote:
> -bool cc_platform_has(enum cc_attr attr)
> +bool noinstr cc_platform_has(enum cc_attr attr)
That's not sufficient. This function invokes static functions which the
compiler can rightfully put out of line resulting in a noinstr violation.
Thanks,
tglx
On Thu, Mar 23, 2023 at 10:17:15AM +0100, Thomas Gleixner wrote:
> That's not sufficient. This function invokes static functions which the
> compiler can rightfully put out of line resulting in a noinstr violation.
Right, as mentioned on IRC, if we're going to use the cc_platform_has()
thing to do simple arch-agnostic confidential guests checks, perhaps we
should make it and the underlying functions it calls simply
__always_inline so that the compiler can optimize stuff even more and
not have function calls for such simple tests...
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
The following commit has been merged into the x86/sev branch of tip:
Commit-ID: 5ae57743f578725a5dadb6f31d7798ee55e6e967
Gitweb: https://git.kernel.org/tip/5ae57743f578725a5dadb6f31d7798ee55e6e967
Author: Borislav Petkov (AMD) <[email protected]>
AuthorDate: Sat, 18 Mar 2023 12:56:33 +01:00
Committer: Borislav Petkov (AMD) <[email protected]>
CommitterDate: Tue, 28 Mar 2023 14:52:51 +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.
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
---
arch/x86/coco/core.c | 13 ++++---------
arch/x86/coco/tdx/tdx.c | 2 +-
arch/x86/hyperv/ivm.c | 2 +-
arch/x86/include/asm/coco.h | 2 +-
arch/x86/mm/mem_encrypt_identity.c | 2 +-
5 files changed, 8 insertions(+), 13 deletions(-)
diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c
index f4f0625..73f8323 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)
@@ -99,7 +99,7 @@ static bool amd_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:
@@ -119,7 +119,7 @@ u64 cc_mkenc(u64 val)
* - for AMD, bit *set* means the page is encrypted
* - for AMD with vTOM and for Intel, *clear* means encrypted
*/
- switch (vendor) {
+ switch (cc_vendor) {
case CC_VENDOR_AMD:
if (sev_status & MSR_AMD64_SNP_VTOM)
return val & ~cc_mask;
@@ -135,7 +135,7 @@ u64 cc_mkenc(u64 val)
u64 cc_mkdec(u64 val)
{
/* See comment in cc_mkenc() */
- switch (vendor) {
+ switch (cc_vendor) {
case CC_VENDOR_AMD:
if (sev_status & MSR_AMD64_SNP_VTOM)
return val | cc_mask;
@@ -149,11 +149,6 @@ 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/hyperv/ivm.c b/arch/x86/hyperv/ivm.c
index f6a020c..4395d2f 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 d2c6a2e..61fc7c1 100644
--- a/arch/x86/include/asm/coco.h
+++ b/arch/x86/include/asm/coco.h
@@ -10,7 +10,7 @@ enum cc_vendor {
CC_VENDOR_INTEL,
};
-void cc_set_vendor(enum cc_vendor v);
+extern enum cc_vendor cc_vendor;
void cc_set_mask(u64 mask);
#ifdef CONFIG_ARCH_HAS_CC_PLATFORM
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);
}
}
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) <[email protected]>
AuthorDate: Sat, 18 Mar 2023 12:56:33 +01:00
Committer: Thomas Gleixner <[email protected]>
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) <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
---
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);
}
}
The following commit has been merged into the x86/cc branch of tip:
Commit-ID: 3d91c537296794d5d0773f61abbe7b63f2f132d8
Gitweb: https://git.kernel.org/tip/3d91c537296794d5d0773f61abbe7b63f2f132d8
Author: Borislav Petkov (AMD) <[email protected]>
AuthorDate: Sat, 18 Mar 2023 12:56:33 +01:00
Committer: Thomas Gleixner <[email protected]>
CommitterDate: Thu, 30 Mar 2023 14:06:28 +02:00
x86/coco: Export cc_vendor
It will be used in different checks in future changes. Export it directly
and provide accessor functions and stubs so this can be used in general
code when CONFIG_ARCH_HAS_CC_PLATFORM is not set.
No functional changes.
[ tglx: Add accessor functions ]
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
---
arch/x86/coco/core.c | 13 ++++---------
arch/x86/include/asm/coco.h | 23 ++++++++++++++++++++---
2 files changed, 24 insertions(+), 12 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/include/asm/coco.h b/arch/x86/include/asm/coco.h
index 3d98c3a..91b9448 100644
--- a/arch/x86/include/asm/coco.h
+++ b/arch/x86/include/asm/coco.h
@@ -11,13 +11,30 @@ 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;
+}
+
+static inline void cc_set_vendor(enum cc_vendor vendor)
+{
+ cc_vendor = 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 void cc_set_vendor(enum cc_vendor vendor) { }
+
static inline u64 cc_mkenc(u64 val)
{
return val;