From: "Moger, Babu" <Babu.Moger@amd.com>
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Subject: [PATCH v9 09/13] x86/resctrl: Add AMD feature bit X86_FEATURE_MBA in cpuid bits array
Date: Wed, 21 Nov 2018 20:28:41 +0000 [thread overview]
Message-ID: <20181121202811.4492-10-babu.moger@amd.com> (raw)
In-Reply-To: <20181121202811.4492-1-babu.moger@amd.com>
From: Sherry Hurwitz <sherry.hurwitz@amd.com>
The feature bit X86_FEATURE_MBA is detected via CPUID leaf 0x80000008
EBX Bit 06. This bit indicates the support of AMD's MBA feature.
This feature is supported by both Intel and AMD. But they are detected
in different CPUID leaves.
Signed-off-by: Sherry Hurwitz <sherry.hurwitz@amd.com>
Signed-off-by: Babu Moger <babu.moger@amd.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
---
arch/x86/kernel/cpu/scattered.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c
index 772c219b6889..bd7853334b27 100644
--- a/arch/x86/kernel/cpu/scattered.c
+++ b/arch/x86/kernel/cpu/scattered.c
@@ -17,7 +17,11 @@ struct cpuid_bit {
u32 sub_leaf;
};
-/* Please keep the leaf sorted by cpuid_bit.level for faster search. */
+/*
+ * Please keep the leaf sorted by cpuid_bit.level for faster search.
+ * X86_FEATURE_MBA supported by both Intel and AMD. But the cpuid
+ * levels are different. Add a separate enty for each.
+ */
static const struct cpuid_bit cpuid_bits[] = {
{ X86_FEATURE_APERFMPERF, CPUID_ECX, 0, 0x00000006, 0 },
{ X86_FEATURE_EPB, CPUID_ECX, 3, 0x00000006, 0 },
@@ -29,6 +33,7 @@ static const struct cpuid_bit cpuid_bits[] = {
{ X86_FEATURE_HW_PSTATE, CPUID_EDX, 7, 0x80000007, 0 },
{ X86_FEATURE_CPB, CPUID_EDX, 9, 0x80000007, 0 },
{ X86_FEATURE_PROC_FEEDBACK, CPUID_EDX, 11, 0x80000007, 0 },
+ { X86_FEATURE_MBA, CPUID_EBX, 6, 0x80000008, 0 },
{ X86_FEATURE_SME, CPUID_EAX, 0, 0x8000001f, 0 },
{ X86_FEATURE_SEV, CPUID_EAX, 1, 0x8000001f, 0 },
{ 0, 0, 0, 0, 0 }
--
2.17.1
next prev parent reply other threads:[~2018-11-21 20:28 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-21 20:28 [PATCH v9 00/13] arch/resctrl: AMD QoS support Moger, Babu
2018-11-21 20:28 ` [PATCH v9 01/13] x86/resctrl: Rename and move rdt files to new directory Moger, Babu
2018-11-22 18:06 ` Borislav Petkov
2018-11-22 21:45 ` [tip:x86/cache] x86/resctrl: Rename and move rdt files to a separate directory tip-bot for Babu Moger
2018-11-23 7:28 ` [PATCH v9 01/13] x86/resctrl: Rename and move rdt files to new directory Ingo Molnar
2018-11-23 8:22 ` Borislav Petkov
2018-11-23 8:41 ` Ingo Molnar
2018-11-23 9:00 ` Borislav Petkov
2018-11-23 11:41 ` Ingo Molnar
2018-11-23 12:43 ` Thomas Gleixner
2018-11-26 18:31 ` Luck, Tony
2018-11-26 19:05 ` Borislav Petkov
2018-12-23 18:27 ` [PATCH v9 00/13] arch/resctrl: AMD QoS support Jan Engelhardt
2018-12-26 17:14 ` Moger, Babu
2018-11-21 20:28 ` [PATCH v9 02/13] x86/resctrl: Rename the RDT functions and definitions Moger, Babu
2018-11-22 21:46 ` [tip:x86/cache] " tip-bot for Babu Moger
2018-11-21 20:28 ` [PATCH v9 03/13] x86/resctrl: Re-arrange RDT init code Moger, Babu
2018-11-22 21:47 ` [tip:x86/cache] x86/resctrl: Re-arrange the " tip-bot for Babu Moger
2018-11-21 20:28 ` [PATCH v9 04/13] x86/resctrl: Bring all the macros to resctrl/internal.h Moger, Babu
2018-11-22 21:47 ` [tip:x86/cache] x86/resctrl: Move " tip-bot for Babu Moger
2018-11-21 20:28 ` [PATCH v9 05/13] x86/resctrl: Initialize the resource functions that are different Moger, Babu
2018-11-22 21:48 ` [tip:x86/cache] x86/resctrl: Initialize the vendor-specific resource functions tip-bot for Babu Moger
2018-11-21 20:28 ` [PATCH v9 06/13] x86/resctrl: Bring cbm_validate function into the resource structure Moger, Babu
2018-11-22 21:48 ` [tip:x86/cache] x86/resctrl: Bring cbm_validate() " tip-bot for Babu Moger
2018-11-21 20:28 ` [PATCH v9 07/13] x86/resctrl: Add vendor check for MBA software controller Moger, Babu
2018-11-22 21:49 ` [tip:x86/cache] x86/resctrl: Add vendor check for the " tip-bot for Babu Moger
2018-11-21 20:28 ` [PATCH v9 08/13] x86/resctrl: Rename config parameter INTEL_RDT to RESCTRL Moger, Babu
2018-11-22 18:46 ` Borislav Petkov
2018-11-22 21:49 ` [tip:x86/cache] x86/resctrl: Rename the config option " tip-bot for Babu Moger
2018-11-21 20:28 ` Moger, Babu [this message]
2018-11-22 21:50 ` [tip:x86/cache] x86/resctrl: Add AMD's X86_FEATURE_MBA to the scattered CPUID features tip-bot for Sherry Hurwitz
2018-11-21 20:28 ` [PATCH v9 10/13] x86/resctrl: Fix the messages in rdt_last_cmd_printf and rdt_last_cmd_puts Moger, Babu
2018-11-22 21:51 ` [tip:x86/cache] x86/resctrl: Fixup the user-visible strings tip-bot for Babu Moger
2018-11-26 22:16 ` [PATCH v9 10/13] x86/resctrl: Fix the messages in rdt_last_cmd_printf and rdt_last_cmd_puts Reinette Chatre
2018-11-26 22:28 ` Borislav Petkov
2018-11-26 22:44 ` Reinette Chatre
2018-11-21 20:28 ` [PATCH v9 11/13] x86/resctrl: Introduce QOS feature for AMD Moger, Babu
2018-11-22 21:51 ` [tip:x86/cache] x86/resctrl: Introduce AMD QOS feature tip-bot for Babu Moger
2018-11-21 20:28 ` [PATCH v9 12/13] Documentation: Rename and update intel_rdt_ui.txt to resctrl_ui.txt Moger, Babu
2018-11-22 21:52 ` [tip:x86/cache] " tip-bot for Babu Moger
2018-11-25 9:07 ` [PATCH v9 12/13] " Pavel Machek
2018-11-21 20:28 ` [PATCH v9 13/13] MAINTAINERS: Update the file and documentation names in arch/x86 Moger, Babu
2018-11-22 21:52 ` [tip:x86/cache] MAINTAINERS: Update resctrl filename patterns tip-bot for Babu Moger
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