Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
index 8ca4798..9c87ae7 100644
--- a/arch/riscv/kernel/entry.S
+++ b/arch/riscv/kernel/entry.S
@@ -387,6 +387,7 @@
ENDPROC(__switch_to)
.section ".rodata"
+ .align LGREG
/* Exception vector table */
ENTRY(excp_vect_table)
RISCV_PTR do_trap_insn_misaligned
diff --git a/arch/riscv/kernel/ftrace.c b/arch/riscv/kernel/ftrace.c
index b94d8db..291c579 100644
--- a/arch/riscv/kernel/ftrace.c
+++ b/arch/riscv/kernel/ftrace.c
@@ -88,6 +88,25 @@
return __ftrace_modify_call(rec->ip, addr, false);
}
+
+/*
+ * This is called early on, and isn't wrapped by
+ * ftrace_arch_code_modify_{prepare,post_process}() and therefor doesn't hold
+ * text_mutex, which triggers a lockdep failure. SMP isn't running so we could
+ * just directly poke the text, but it's simpler to just take the lock
+ * ourselves.
+ */
+int ftrace_init_nop(struct module *mod, struct dyn_ftrace *rec)
+{
+ int out;
+
+ ftrace_arch_code_modify_prepare();
+ out = ftrace_make_nop(mod, rec, MCOUNT_ADDR);
+ ftrace_arch_code_modify_post_process();
+
+ return out;
+}
+
int ftrace_update_ftrace_func(ftrace_func_t func)
{
int ret = __ftrace_modify_call((unsigned long)&ftrace_call,
@@ -142,7 +161,7 @@
*/
old = *parent;
- if (function_graph_enter(old, self_addr, frame_pointer, parent))
+ if (!function_graph_enter(old, self_addr, frame_pointer, parent))
*parent = return_hooker;
}
diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S
index 72f89b7..3447931 100644
--- a/arch/riscv/kernel/head.S
+++ b/arch/riscv/kernel/head.S
@@ -26,6 +26,10 @@
/* reserved */
.word 0
.balign 8
+#ifdef CONFIG_RISCV_M_MODE
+ /* Image load offset (0MB) from start of RAM for M-mode */
+ .dword 0
+#else
#if __riscv_xlen == 64
/* Image load offset(2MB) from start of RAM */
.dword 0x200000
@@ -33,6 +37,7 @@
/* Image load offset(4MB) from start of RAM */
.dword 0x400000
#endif
+#endif
/* Effective size of kernel image */
.dword _end - _start
.dword __HEAD_FLAGS
diff --git a/arch/riscv/kernel/mcount.S b/arch/riscv/kernel/mcount.S
index 8a5593f..6d46268 100644
--- a/arch/riscv/kernel/mcount.S
+++ b/arch/riscv/kernel/mcount.S
@@ -47,8 +47,8 @@
ENTRY(ftrace_stub)
#ifdef CONFIG_DYNAMIC_FTRACE
- .global _mcount
- .set _mcount, ftrace_stub
+ .global MCOUNT_NAME
+ .set MCOUNT_NAME, ftrace_stub
#endif
ret
ENDPROC(ftrace_stub)
@@ -78,7 +78,7 @@
#endif
#ifndef CONFIG_DYNAMIC_FTRACE
-ENTRY(_mcount)
+ENTRY(MCOUNT_NAME)
la t4, ftrace_stub
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
la t0, ftrace_graph_return
@@ -124,6 +124,6 @@
jalr t5
RESTORE_ABI_STATE
ret
-ENDPROC(_mcount)
+ENDPROC(MCOUNT_NAME)
#endif
-EXPORT_SYMBOL(_mcount)
+EXPORT_SYMBOL(MCOUNT_NAME)
diff --git a/arch/riscv/kernel/module.c b/arch/riscv/kernel/module.c
index 70bb94a..6bf5b16 100644
--- a/arch/riscv/kernel/module.c
+++ b/arch/riscv/kernel/module.c
@@ -8,6 +8,10 @@
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/moduleloader.h>
+#include <linux/vmalloc.h>
+#include <linux/sizes.h>
+#include <asm/pgtable.h>
+#include <asm/sections.h>
static int apply_r_riscv_32_rela(struct module *me, u32 *location, Elf_Addr v)
{
@@ -386,3 +390,15 @@
return 0;
}
+
+#if defined(CONFIG_MMU) && defined(CONFIG_64BIT)
+#define VMALLOC_MODULE_START \
+ max(PFN_ALIGN((unsigned long)&_end - SZ_2G), VMALLOC_START)
+void *module_alloc(unsigned long size)
+{
+ return __vmalloc_node_range(size, 1, VMALLOC_MODULE_START,
+ VMALLOC_END, GFP_KERNEL,
+ PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
+ __builtin_return_address(0));
+}
+#endif
diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c
index 85e3c39..330b347 100644
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -99,8 +99,8 @@
return 0;
}
-int copy_thread(unsigned long clone_flags, unsigned long usp,
- unsigned long arg, struct task_struct *p)
+int copy_thread_tls(unsigned long clone_flags, unsigned long usp,
+ unsigned long arg, struct task_struct *p, unsigned long tls)
{
struct pt_regs *childregs = task_pt_regs(p);
@@ -120,7 +120,7 @@
if (usp) /* User fork */
childregs->sp = usp;
if (clone_flags & CLONE_SETTLS)
- childregs->tp = childregs->a5;
+ childregs->tp = tls;
childregs->a0 = 0; /* Return value of fork() */
p->thread.ra = (unsigned long)ret_from_fork;
}
diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
index 5c9ec78..098c04a 100644
--- a/arch/riscv/kernel/smp.c
+++ b/arch/riscv/kernel/smp.c
@@ -51,7 +51,7 @@
return i;
pr_err("Couldn't find cpu id for hartid [%d]\n", hartid);
- return i;
+ return -ENOENT;
}
void riscv_cpuid_to_hartid_mask(const struct cpumask *in, struct cpumask *out)
diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c
index 0940681..19e46f4 100644
--- a/arch/riscv/kernel/stacktrace.c
+++ b/arch/riscv/kernel/stacktrace.c
@@ -63,7 +63,7 @@
#else /* !CONFIG_FRAME_POINTER */
-static void notrace walk_stackframe(struct task_struct *task,
+void notrace walk_stackframe(struct task_struct *task,
struct pt_regs *regs, bool (*fn)(unsigned long, void *), void *arg)
{
unsigned long sp, pc;
diff --git a/arch/riscv/kernel/sys_riscv.c b/arch/riscv/kernel/sys_riscv.c
index f3619f5..12f8a7f 100644
--- a/arch/riscv/kernel/sys_riscv.c
+++ b/arch/riscv/kernel/sys_riscv.c
@@ -8,6 +8,7 @@
#include <linux/syscalls.h>
#include <asm/unistd.h>
#include <asm/cacheflush.h>
+#include <asm-generic/mman-common.h>
static long riscv_sys_mmap(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
@@ -16,6 +17,11 @@
{
if (unlikely(offset & (~PAGE_MASK >> page_shift_offset)))
return -EINVAL;
+
+ if ((prot & PROT_WRITE) && (prot & PROT_EXEC))
+ if (unlikely(!(prot & PROT_READ)))
+ return -EINVAL;
+
return ksys_mmap_pgoff(addr, len, prot, flags, fd,
offset >> (PAGE_SHIFT - page_shift_offset));
}
diff --git a/arch/riscv/kernel/time.c b/arch/riscv/kernel/time.c
index 6a53c02..8aa70b5 100644
--- a/arch/riscv/kernel/time.c
+++ b/arch/riscv/kernel/time.c
@@ -4,6 +4,7 @@
* Copyright (C) 2017 SiFive
*/
+#include <linux/of_clk.h>
#include <linux/clocksource.h>
#include <linux/delay.h>
#include <asm/sbi.h>
@@ -24,5 +25,7 @@
riscv_timebase = prop;
lpj_fine = riscv_timebase / HZ;
+
+ of_clk_init(NULL);
timer_probe();
}
diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile
index 49a5852..a4ee3a0 100644
--- a/arch/riscv/kernel/vdso/Makefile
+++ b/arch/riscv/kernel/vdso/Makefile
@@ -33,15 +33,15 @@
$(call if_changed,vdsold)
# We also create a special relocatable object that should mirror the symbol
-# table and layout of the linked DSO. With ld -R we can then refer to
-# these symbols in the kernel code rather than hand-coded addresses.
+# table and layout of the linked DSO. With ld --just-symbols we can then
+# refer to these symbols in the kernel code rather than hand-coded addresses.
SYSCFLAGS_vdso.so.dbg = -shared -s -Wl,-soname=linux-vdso.so.1 \
-Wl,--build-id -Wl,--hash-style=both
$(obj)/vdso-dummy.o: $(src)/vdso.lds $(obj)/rt_sigreturn.o FORCE
$(call if_changed,vdsold)
-LDFLAGS_vdso-syms.o := -r -R
+LDFLAGS_vdso-syms.o := -r --just-symbols
$(obj)/vdso-syms.o: $(obj)/vdso-dummy.o FORCE
$(call if_changed,ld)
@@ -58,7 +58,8 @@
cmd_vdsold = $(CC) $(KBUILD_CFLAGS) $(call cc-option, -no-pie) -nostdlib -nostartfiles $(SYSCFLAGS_$(@F)) \
-Wl,-T,$(filter-out FORCE,$^) -o $@.tmp && \
$(CROSS_COMPILE)objcopy \
- $(patsubst %, -G __vdso_%, $(vdso-syms)) $@.tmp $@
+ $(patsubst %, -G __vdso_%, $(vdso-syms)) $@.tmp $@ && \
+ rm $@.tmp
# install commands for the unstripped file
quiet_cmd_vdso_install = INSTALL $@