From: Josh Poimboeuf <jpoimboe@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>, Ingo Molnar <mingo@kernel.org>,
Borislav Petkov <bp@alien8.de>, Brian Gerst <brgerst@gmail.com>,
Denys Vlasenko <dvlasenk@redhat.com>,
"H . Peter Anvin" <hpa@zytor.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Rik van Riel <riel@redhat.com>,
daniel.gruss@iaik.tugraz.at, hughd@google.com,
keescook@google.com, linux-mm@kvack.org,
michael.schwarz@iaik.tugraz.at, moritz.lipp@iaik.tugraz.at,
richard.fellner@student.tugraz.at
Subject: [PATCH 1/2] x86/mm/kaiser: Remove unused user-mapped page-aligned section
Date: Mon, 27 Nov 2017 22:10:12 -0600 [thread overview]
Message-ID: <666935452d5eef100464b7314be90fccd65e795c.1511842148.git.jpoimboe@redhat.com> (raw)
In-Reply-To: <cover.1511842148.git.jpoimboe@redhat.com>
The '.data..percpu..user_mapped..page_aligned' section isn't used
anywhere. Remove it and its related macros.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
---
include/asm-generic/vmlinux.lds.h | 2 --
include/linux/percpu-defs.h | 10 ----------
2 files changed, 12 deletions(-)
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index e12168936d3f..386f8846d9e9 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -831,8 +831,6 @@
. = ALIGN(cacheline); \
*(.data..percpu..user_mapped) \
*(.data..percpu..user_mapped..shared_aligned) \
- . = ALIGN(PAGE_SIZE); \
- *(.data..percpu..user_mapped..page_aligned) \
VMLINUX_SYMBOL(__per_cpu_user_mapped_end) = .; \
. = ALIGN(PAGE_SIZE); \
*(.data..percpu..page_aligned) \
diff --git a/include/linux/percpu-defs.h b/include/linux/percpu-defs.h
index 752513674295..40ea19ccf1ec 100644
--- a/include/linux/percpu-defs.h
+++ b/include/linux/percpu-defs.h
@@ -182,16 +182,6 @@
#define DEFINE_PER_CPU_PAGE_ALIGNED(type, name) \
DEFINE_PER_CPU_SECTION(type, name, "..page_aligned") \
__aligned(PAGE_SIZE)
-/*
- * Declaration/definition used for per-CPU variables that must be page aligned and need to be mapped in user mode.
- */
-#define DECLARE_PER_CPU_PAGE_ALIGNED_USER_MAPPED(type, name) \
- DECLARE_PER_CPU_SECTION(type, name, USER_MAPPED_SECTION"..page_aligned") \
- __aligned(PAGE_SIZE)
-
-#define DEFINE_PER_CPU_PAGE_ALIGNED_USER_MAPPED(type, name) \
- DEFINE_PER_CPU_SECTION(type, name, USER_MAPPED_SECTION"..page_aligned") \
- __aligned(PAGE_SIZE)
/*
* Declaration/definition used for per-CPU variables that must be read mostly.
--
2.13.6
--
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next prev parent reply other threads:[~2017-11-28 4:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-28 4:10 [PATCH 0/2] x86/mm/kaiser: a couple of KAISER mapping fixes Josh Poimboeuf
2017-11-28 4:10 ` Josh Poimboeuf [this message]
2017-11-28 9:20 ` [PATCH 1/2] x86/mm/kaiser: Remove unused user-mapped page-aligned section Peter Zijlstra
2017-11-28 12:43 ` Peter Zijlstra
2017-11-28 4:10 ` [PATCH 2/2] x86/mm/kaiser: Don't map the IRQ stack in user space Josh Poimboeuf
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