From: "Moger, Babu" <Babu.Moger@amd.com>
To: "tglx@linutronix.de" <tglx@linutronix.de>,
"mingo@redhat.com" <mingo@redhat.com>,
"bp@alien8.de" <bp@alien8.de>, "hpa@zytor.com" <hpa@zytor.com>,
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"rkrcmar@redhat.com" <rkrcmar@redhat.com>,
"sean.j.christopherson@intel.com"
<sean.j.christopherson@intel.com>,
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Cc: "x86@kernel.org" <x86@kernel.org>,
"joro@8bytes.org" <joro@8bytes.org>,
"Moger, Babu" <Babu.Moger@amd.com>,
"luto@kernel.org" <luto@kernel.org>,
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"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"zohar@linux.ibm.com" <zohar@linux.ibm.com>,
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"ebiederm@xmission.com" <ebiederm@xmission.com>,
"ricardo.neri-calderon@linux.intel.com"
<ricardo.neri-calderon@linux.intel.com>,
"bshanks@codeweavers.com" <bshanks@codeweavers.com>
Subject: [PATCH v3 1/2] x86/Kconfig: Rename UMIP config parameter
Date: Tue, 5 Nov 2019 21:25:32 +0000 [thread overview]
Message-ID: <157298912544.17462.2018334793891409521.stgit@naples-babu.amd.com> (raw)
In-Reply-To: <157298900783.17462.2778215498449243912.stgit@naples-babu.amd.com>
AMD 2nd generation EPYC processors support the UMIP (User-Mode
Instruction Prevention) feature. So, rename X86_INTEL_UMIP to
generic X86_UMIP and modify the text to cover both Intel and AMD.
Signed-off-by: Babu Moger <babu.moger@amd.com>
---
arch/x86/Kconfig | 10 +++++-----
arch/x86/include/asm/disabled-features.h | 2 +-
arch/x86/include/asm/umip.h | 4 ++--
arch/x86/kernel/Makefile | 2 +-
4 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index d6e1faa28c58..b7fb285d7c0f 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1880,13 +1880,13 @@ config X86_SMAP
If unsure, say Y.
-config X86_INTEL_UMIP
+config X86_UMIP
def_bool y
- depends on CPU_SUP_INTEL
- prompt "Intel User Mode Instruction Prevention" if EXPERT
+ depends on CPU_SUP_INTEL || CPU_SUP_AMD
+ prompt "User Mode Instruction Prevention" if EXPERT
---help---
- The User Mode Instruction Prevention (UMIP) is a security
- feature in newer Intel processors. If enabled, a general
+ User Mode Instruction Prevention (UMIP) is a security
+ feature in newer x86 processors. If enabled, a general
protection fault is issued if the SGDT, SLDT, SIDT, SMSW
or STR instructions are executed in user mode. These instructions
unnecessarily expose information about the hardware state.
diff --git a/arch/x86/include/asm/disabled-features.h b/arch/x86/include/asm/disabled-features.h
index a5ea841cc6d2..8e1d0bb46361 100644
--- a/arch/x86/include/asm/disabled-features.h
+++ b/arch/x86/include/asm/disabled-features.h
@@ -22,7 +22,7 @@
# define DISABLE_SMAP (1<<(X86_FEATURE_SMAP & 31))
#endif
-#ifdef CONFIG_X86_INTEL_UMIP
+#ifdef CONFIG_X86_UMIP
# define DISABLE_UMIP 0
#else
# define DISABLE_UMIP (1<<(X86_FEATURE_UMIP & 31))
diff --git a/arch/x86/include/asm/umip.h b/arch/x86/include/asm/umip.h
index db43f2a0d92c..aeed98c3c9e1 100644
--- a/arch/x86/include/asm/umip.h
+++ b/arch/x86/include/asm/umip.h
@@ -4,9 +4,9 @@
#include <linux/types.h>
#include <asm/ptrace.h>
-#ifdef CONFIG_X86_INTEL_UMIP
+#ifdef CONFIG_X86_UMIP
bool fixup_umip_exception(struct pt_regs *regs);
#else
static inline bool fixup_umip_exception(struct pt_regs *regs) { return false; }
-#endif /* CONFIG_X86_INTEL_UMIP */
+#endif /* CONFIG_X86_UMIP */
#endif /* _ASM_X86_UMIP_H */
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 3578ad248bc9..52ce1e239525 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -134,7 +134,7 @@ obj-$(CONFIG_EFI) += sysfb_efi.o
obj-$(CONFIG_PERF_EVENTS) += perf_regs.o
obj-$(CONFIG_TRACING) += tracepoint.o
obj-$(CONFIG_SCHED_MC_PRIO) += itmt.o
-obj-$(CONFIG_X86_INTEL_UMIP) += umip.o
+obj-$(CONFIG_X86_UMIP) += umip.o
obj-$(CONFIG_UNWINDER_ORC) += unwind_orc.o
obj-$(CONFIG_UNWINDER_FRAME_POINTER) += unwind_frame.o
next prev parent reply other threads:[~2019-11-05 21:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-05 21:25 [PATCH v3 0/2] Update UMIP config parameter and docs Moger, Babu
2019-11-05 21:25 ` Moger, Babu [this message]
2019-11-07 1:31 ` [PATCH v3 1/2] x86/Kconfig: Rename UMIP config parameter Ricardo Neri
2019-11-07 10:07 ` Borislav Petkov
2019-11-07 10:20 ` [tip: x86/cpu] " tip-bot2 for Babu Moger
2019-11-05 21:25 ` [PATCH v3 2/2] x86/umip: Update the comments to cover generic x86 processors Moger, Babu
2019-11-07 10:20 ` [tip: x86/cpu] x86/umip: Make the comments vendor-agnostic tip-bot2 for Babu Moger
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