[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <157544841706.21853.11020187045809244802.tip-bot2@tip-bot2>
Date: Wed, 04 Dec 2019 08:33:37 -0000
From: "tip-bot2 for Peter Zijlstra" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Alexei Starovoitov <ast@...nel.org>,
"Steven Rostedt (VMware)" <rostedt@...dmis.org>,
"Peter Zijlstra (Intel)" <peterz@...radead.org>,
Andy Lutomirski <luto@...nel.org>,
Borislav Petkov <bp@...en8.de>,
"H. Peter Anvin" <hpa@...or.com>,
Josh Poimboeuf <jpoimboe@...hat.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...nel.org>, x86 <x86@...nel.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: [tip: core/kprobes] x86/mm: Remove set_kernel_text_r[ow]()
The following commit has been merged into the core/kprobes branch of tip:
Commit-ID: c12af4407fa5a3fc6396bde379e0882a132df49b
Gitweb: https://git.kernel.org/tip/c12af4407fa5a3fc6396bde379e0882a132df49b
Author: Peter Zijlstra <peterz@...radead.org>
AuthorDate: Mon, 02 Sep 2019 10:16:12 +02:00
Committer: Ingo Molnar <mingo@...nel.org>
CommitterDate: Wed, 27 Nov 2019 07:44:24 +01:00
x86/mm: Remove set_kernel_text_r[ow]()
With the last and only user of these functions gone (ftrace) remove
them as well to avoid ever growing new users.
Tested-by: Alexei Starovoitov <ast@...nel.org>
Tested-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Acked-by: Alexei Starovoitov <ast@...nel.org>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: https://lkml.kernel.org/r/20191111132457.819095320@infradead.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
arch/x86/include/asm/set_memory.h | 2 +--
arch/x86/mm/init_32.c | 28 +-----------------------
arch/x86/mm/init_64.c | 36 +------------------------------
3 files changed, 66 deletions(-)
diff --git a/arch/x86/include/asm/set_memory.h b/arch/x86/include/asm/set_memory.h
index 2ee8e46..64c3dce 100644
--- a/arch/x86/include/asm/set_memory.h
+++ b/arch/x86/include/asm/set_memory.h
@@ -81,8 +81,6 @@ int set_direct_map_invalid_noflush(struct page *page);
int set_direct_map_default_noflush(struct page *page);
extern int kernel_set_to_readonly;
-void set_kernel_text_rw(void);
-void set_kernel_text_ro(void);
#ifdef CONFIG_X86_64
static inline int set_mce_nospec(unsigned long pfn)
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 930edeb..e9f239e 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -874,34 +874,6 @@ void arch_remove_memory(int nid, u64 start, u64 size,
int kernel_set_to_readonly __read_mostly;
-void set_kernel_text_rw(void)
-{
- unsigned long start = PFN_ALIGN(_text);
- unsigned long size = PFN_ALIGN(_etext) - start;
-
- if (!kernel_set_to_readonly)
- return;
-
- pr_debug("Set kernel text: %lx - %lx for read write\n",
- start, start+size);
-
- set_pages_rw(virt_to_page(start), size >> PAGE_SHIFT);
-}
-
-void set_kernel_text_ro(void)
-{
- unsigned long start = PFN_ALIGN(_text);
- unsigned long size = PFN_ALIGN(_etext) - start;
-
- if (!kernel_set_to_readonly)
- return;
-
- pr_debug("Set kernel text: %lx - %lx for read only\n",
- start, start+size);
-
- set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);
-}
-
static void mark_nxdata_nx(void)
{
/*
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index dcb9bc9..b326f14 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1260,42 +1260,6 @@ void __init mem_init(void)
int kernel_set_to_readonly;
-void set_kernel_text_rw(void)
-{
- unsigned long start = PFN_ALIGN(_text);
- unsigned long end = PFN_ALIGN(_etext);
-
- if (!kernel_set_to_readonly)
- return;
-
- pr_debug("Set kernel text: %lx - %lx for read write\n",
- start, end);
-
- /*
- * Make the kernel identity mapping for text RW. Kernel text
- * mapping will always be RO. Refer to the comment in
- * static_protections() in pageattr.c
- */
- set_memory_rw(start, (end - start) >> PAGE_SHIFT);
-}
-
-void set_kernel_text_ro(void)
-{
- unsigned long start = PFN_ALIGN(_text);
- unsigned long end = PFN_ALIGN(_etext);
-
- if (!kernel_set_to_readonly)
- return;
-
- pr_debug("Set kernel text: %lx - %lx for read only\n",
- start, end);
-
- /*
- * Set the kernel identity mapping for text RO.
- */
- set_memory_ro(start, (end - start) >> PAGE_SHIFT);
-}
-
void mark_rodata_ro(void)
{
unsigned long start = PFN_ALIGN(_text);
Powered by blists - more mailing lists