From: "Chang S. Bae" <chang.seok.bae@intel.com>
To: bp@suse.de, luto@kernel.org, tglx@linutronix.de,
mingo@kernel.org, x86@kernel.org
Cc: len.brown@intel.com, dave.hansen@intel.com, jing2.liu@intel.com,
ravi.v.shankar@intel.com, linux-kernel@vger.kernel.org,
chang.seok.bae@intel.com
Subject: [PATCH v6 21/26] x86/fpu/amx: Enable the AMX feature in 64-bit mode
Date: Tue, 29 Jun 2021 23:02:21 -0700 [thread overview]
Message-ID: <20210630060226.24652-22-chang.seok.bae@intel.com> (raw)
In-Reply-To: <20210630060226.24652-1-chang.seok.bae@intel.com>
In 64-bit mode, include the AMX state components in
XFEATURE_MASK_USER_SUPPORTED.
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Cc: x86@kernel.org
Cc: linux-kernel@vger.kernel.org
---
Changes from v5:
* Adjusted macro changes and moved the disabling code for non-64-bit mode
for the new base changes.
Changes from v4:
* Removed the irrelevant line from the changelog. (Thomas Gleixner)
---
arch/x86/include/asm/fpu/xstate.h | 3 ++-
arch/x86/kernel/fpu/xstate.c | 6 +++++-
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/fpu/xstate.h b/arch/x86/include/asm/fpu/xstate.h
index 29adf4f07f15..8b89a2ce578f 100644
--- a/arch/x86/include/asm/fpu/xstate.h
+++ b/arch/x86/include/asm/fpu/xstate.h
@@ -35,7 +35,8 @@
XFEATURE_MASK_Hi16_ZMM | \
XFEATURE_MASK_PKRU | \
XFEATURE_MASK_BNDREGS | \
- XFEATURE_MASK_BNDCSR)
+ XFEATURE_MASK_BNDCSR | \
+ XFEATURE_MASK_XTILE)
/*
* Features which are restored when returning to user space.
diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index 08cd40685a3e..4f35bce1e4ae 100644
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -536,7 +536,8 @@ static void __init print_xstate_offset_size(void)
XFEATURE_MASK_PKRU | \
XFEATURE_MASK_BNDREGS | \
XFEATURE_MASK_BNDCSR | \
- XFEATURE_MASK_PASID)
+ XFEATURE_MASK_PASID | \
+ XFEATURE_MASK_XTILE)
/*
* setup the xstate image representing the init state
@@ -1066,6 +1067,9 @@ void __init fpu__init_system_xstate(void)
xfeatures_mask_all &= XFEATURE_MASK_USER_SUPPORTED |
XFEATURE_MASK_SUPERVISOR_SUPPORTED;
+ if (!IS_ENABLED(CONFIG_X86_64))
+ xfeatures_mask_all &= ~XFEATURE_MASK_XTILE;
+
/* Store it for paranoia check at the end */
xfeatures = xfeatures_mask_all;
/* Do not support the dynamically allocated buffer yet. */
--
2.17.1
next prev parent reply other threads:[~2021-06-30 6:09 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-30 6:02 [PATCH v6 00/26] x86: Support Intel Advanced Matrix Extensions Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 01/26] x86/fpu/xstate: Modify the initialization helper to handle both static and dynamic buffers Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 02/26] x86/fpu/xstate: Modify state copy helpers " Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 03/26] x86/fpu/xstate: Modify address finders " Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 04/26] x86/fpu/xstate: Add a new variable to indicate dynamic user states Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 05/26] x86/fpu/xstate: Add new variables to indicate dynamic XSTATE buffer size Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 06/26] x86/fpu/xstate: Calculate and remember dynamic XSTATE buffer sizes Chang S. Bae
2021-07-02 15:19 ` Bae, Chang Seok
2021-07-02 15:17 ` [PATCH v6-fix " Chang S. Bae
2021-07-02 17:46 ` Dave Hansen
2021-06-30 6:02 ` [PATCH v6 07/26] x86/fpu/xstate: Convert the struct fpu 'state' field to a pointer Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 08/26] x86/fpu/xstate: Introduce helpers to manage the XSTATE buffer dynamically Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 09/26] x86/fpu/xstate: Update the XSTATE save function to support dynamic states Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 10/26] x86/fpu/xstate: Update the XSTATE buffer address finder " Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 11/26] x86/fpu/xstate: Update the XSTATE context copy function " Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 12/26] x86/fpu/xstate: Use feature disable (XFD) to protect dynamic user state Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 13/26] x86/fpu/xstate: Support ptracer-induced XSTATE buffer expansion Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 14/26] x86/arch_prctl: Create ARCH_ENABLE_XSTATE Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 15/26] x86/fpu/xstate: Support both legacy and expanded signal XSTATE size Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 16/26] x86/fpu/xstate: Adjust the XSAVE feature table to address gaps in state component numbers Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 17/26] x86/fpu/xstate: Disable XSTATE support if an inconsistent state is detected Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 18/26] x86/cpufeatures/amx: Enumerate Advanced Matrix Extension (AMX) feature bits Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 19/26] x86/fpu/amx: Define AMX state components and have it used for boot-time checks Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 20/26] x86/fpu/amx: Initialize child's AMX state Chang S. Bae
2021-06-30 6:02 ` Chang S. Bae [this message]
2021-06-30 6:02 ` [PATCH v6 22/26] x86/fpu/xstate: Skip writing zeros to signal frame for dynamic user states if in INIT-state Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 23/26] selftest/x86/amx: Test cases for the AMX state management Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 24/26] x86/insn/amx: Add TILERELEASE instruction to the opcode map Chang S. Bae
2021-06-30 6:02 ` [PATCH v6 25/26] intel_idle/amx: Clear the AMX state before entering idle Chang S. Bae
2021-06-30 13:11 ` Rafael J. Wysocki
2021-06-30 6:02 ` [PATCH v6 26/26] x86/fpu/xstate: Add a sanity check for XFD state when saving XSTATE Chang S. Bae
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