Merge tag 'loongarch-fixes-6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

09ef2957 · Linus Torvalds <[email protected]> · 2024-04-26 10:55:23 -07:00

Pull LoongArch fixes from Huacai Chen:
 "Fix some build errors and some trivial runtime bugs"

* tag 'loongarch-fixes-6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  LoongArch: Lately init pmu after smp is online
  LoongArch: Fix callchain parse error with kernel tracepoint events
  LoongArch: Fix access error when read fault on a write-only VMA
  LoongArch: Fix a build error due to __tlb_remove_tlb_entry()
  LoongArch: Fix Kconfig item and left code related to CRASH_CORE

Commit: 09ef2957170db78429acb10b606636f798cbd3cc
Parents: 084c473c · f3334ebb

Merge commit. Changes below are compared with the first parent: 084c473c.

Changes

6 files changed · +14 −8

File	Status	Add	Del	Content
arch/loongarch/Kconfig	modified	+1	−1	View file
arch/loongarch/include/asm/crash_core.h → arch/loongarch/include/asm/crash_reserve.h	renamed	+2	−2	View file
arch/loongarch/include/asm/perf_event.h	modified	+8	−0	View file
arch/loongarch/include/asm/tlb.h	modified	+0	−2	View file
arch/loongarch/kernel/perf_event.c	modified	+1	−1	View file
arch/loongarch/mm/fault.c	modified	+2	−2	View file

arch/loongarch/Kconfig

View file

diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index a5f300e..54ad04d 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -595,7 +595,7 @@ config ARCH_SELECTS_CRASH_DUMP
 	select RELOCATABLE
 
 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
-	def_bool CRASH_CORE
+	def_bool CRASH_RESERVE
 
 config RELOCATABLE
 	bool "Relocatable kernel"

arch/loongarch/include/asm/crash_reserve.h

View file

diff --git a/arch/loongarch/include/asm/crash_core.h b/arch/loongarch/include/asm/crash_reserve.h
similarity index 75%
rename from arch/loongarch/include/asm/crash_core.h
rename to arch/loongarch/include/asm/crash_reserve.h
index 218bdbf..a1d9b84 100644
--- a/arch/loongarch/include/asm/crash_core.h
+++ b/arch/loongarch/include/asm/crash_reserve.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-#ifndef _LOONGARCH_CRASH_CORE_H
-#define _LOONGARCH_CRASH_CORE_H
+#ifndef _LOONGARCH_CRASH_RESERVE_H
+#define _LOONGARCH_CRASH_RESERVE_H
 
 #define CRASH_ALIGN			SZ_2M
 

arch/loongarch/include/asm/perf_event.h

View file

diff --git a/arch/loongarch/include/asm/perf_event.h b/arch/loongarch/include/asm/perf_event.h
index 2a35a0b..52b6380 100644
--- a/arch/loongarch/include/asm/perf_event.h
+++ b/arch/loongarch/include/asm/perf_event.h
@@ -7,6 +7,14 @@
 #ifndef __LOONGARCH_PERF_EVENT_H__
 #define __LOONGARCH_PERF_EVENT_H__
 
+#include <asm/ptrace.h>
+
 #define perf_arch_bpf_user_pt_regs(regs) (struct user_pt_regs *)regs
 
+#define perf_arch_fetch_caller_regs(regs, __ip) { \
+	(regs)->csr_era = (__ip); \
+	(regs)->regs[3] = current_stack_pointer; \
+	(regs)->regs[22] = (unsigned long) __builtin_frame_address(0); \
+}
+
 #endif /* __LOONGARCH_PERF_EVENT_H__ */

arch/loongarch/include/asm/tlb.h

View file

diff --git a/arch/loongarch/include/asm/tlb.h b/arch/loongarch/include/asm/tlb.h
index da7a3b5..e071f5e 100644
--- a/arch/loongarch/include/asm/tlb.h
+++ b/arch/loongarch/include/asm/tlb.h
@@ -132,8 +132,6 @@ static __always_inline void invtlb_all(u32 op, u32 info, u64 addr)
 		);
 }
 
-#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
-
 static void tlb_flush(struct mmu_gather *tlb);
 
 #define tlb_flush tlb_flush

arch/loongarch/kernel/perf_event.c

View file

diff --git a/arch/loongarch/kernel/perf_event.c b/arch/loongarch/kernel/perf_event.c
index 0491bf4..cac7cba 100644
--- a/arch/loongarch/kernel/perf_event.c
+++ b/arch/loongarch/kernel/perf_event.c
@@ -884,4 +884,4 @@ static int __init init_hw_perf_events(void)
 
 	return 0;
 }
-early_initcall(init_hw_perf_events);
+pure_initcall(init_hw_perf_events);

arch/loongarch/mm/fault.c

View file

diff --git a/arch/loongarch/mm/fault.c b/arch/loongarch/mm/fault.c
index 1fc2f68..97b40de 100644
--- a/arch/loongarch/mm/fault.c
+++ b/arch/loongarch/mm/fault.c
@@ -202,10 +202,10 @@ good_area:
 		if (!(vma->vm_flags & VM_WRITE))
 			goto bad_area;
 	} else {
-		if (!(vma->vm_flags & VM_READ) && address != exception_era(regs))
-			goto bad_area;
 		if (!(vma->vm_flags & VM_EXEC) && address == exception_era(regs))
 			goto bad_area;
+		if (!(vma->vm_flags & (VM_READ | VM_WRITE)) && address != exception_era(regs))
+			goto bad_area;
 	}
 
 	/*