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LoongArch fixes for v6.7-rc3

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Merge tag 'loongarch-fixes-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch fixes from Huacai Chen:
 "Fix several build errors, a potential kernel panic, a cpu hotplug
  issue and update links in documentations"

* tag 'loongarch-fixes-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  Docs/zh_CN/LoongArch: Update links in LoongArch introduction.rst
  Docs/LoongArch: Update links in LoongArch introduction.rst
  LoongArch: Implement constant timer shutdown interface
  LoongArch: Mark {dmw,tlb}_virt_to_page() exports as non-GPL
  LoongArch: Silence the boot warning about 'nokaslr'
  LoongArch: Add __percpu annotation for __percpu_read()/__percpu_write()
  LoongArch: Record pc instead of offset in la_abs relocation
  LoongArch: Explicitly set -fdirect-access-external-data for vmlinux
  LoongArch: Add dependency between vmlinuz.efi and vmlinux.efi
This commit is contained in:
Linus Torvalds 2023-11-22 10:20:17 -08:00
commit 9b6de136b5
9 changed files with 36 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/arch/loongarch/introduction.rst
View File

@ -375,9 +375,9 @@ Developer web site of Loongson and LoongArch (Software and Documentation):
Documentation of LoongArch ISA:
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-Vol1-v1.02-CN.pdf (in Chinese)
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-Vol1-v1.10-CN.pdf (in Chinese)
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-Vol1-v1.02-EN.pdf (in English)
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-Vol1-v1.10-EN.pdf (in English)
Documentation of LoongArch ELF psABI:

4
Documentation/translations/zh_CN/arch/loongarch/introduction.rst
View File

@ -338,9 +338,9 @@ Loongson与LoongArch的开发者网站（软件与文档资源）：
LoongArch指令集架构的文档：
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-Vol1-v1.02-CN.pdf （中文版）
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-Vol1-v1.10-CN.pdf （中文版）
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-Vol1-v1.02-EN.pdf （英文版）
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-Vol1-v1.10-EN.pdf （英文版）
LoongArch的ELF psABI文档：

3
arch/loongarch/Makefile
View File

@ -68,6 +68,7 @@ LDFLAGS_vmlinux += -static -n -nostdlib
ifdef CONFIG_AS_HAS_EXPLICIT_RELOCS
cflags-y += $(call cc-option,-mexplicit-relocs)
KBUILD_CFLAGS_KERNEL += $(call cc-option,-mdirect-extern-access)
KBUILD_CFLAGS_KERNEL += $(call cc-option,-fdirect-access-external-data)
KBUILD_AFLAGS_MODULE += $(call cc-option,-fno-direct-access-external-data)
KBUILD_CFLAGS_MODULE += $(call cc-option,-fno-direct-access-external-data)
KBUILD_AFLAGS_MODULE += $(call cc-option,-mno-relax) $(call cc-option,-Wa$(comma)-mno-relax)
@ -142,6 +143,8 @@ vdso-install-y += arch/loongarch/vdso/vdso.so.dbg
all: $(notdir $(KBUILD_IMAGE))
vmlinuz.efi: vmlinux.efi
vmlinux.elf vmlinux.efi vmlinuz.efi: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(bootvars-y) $(boot)/$@

3
arch/loongarch/include/asm/asmmacro.h
View File

@ -609,8 +609,7 @@
lu32i.d \reg, 0
lu52i.d \reg, \reg, 0
.pushsection ".la_abs", "aw", %progbits
768:
.dword 768b-766b
.dword 766b
.dword \sym
.popsection
#endif

11
arch/loongarch/include/asm/percpu.h
View File

@ -40,13 +40,13 @@ static __always_inline unsigned long __percpu_##op(void *ptr, \
switch (size) { \
case 4: \
__asm__ __volatile__( \
"am"#asm_op".w" " %[ret], %[val], %[ptr] \n" \
"am"#asm_op".w" " %[ret], %[val], %[ptr] \n" \
: [ret] "=&r" (ret), [ptr] "+ZB"(*(u32 *)ptr) \
: [val] "r" (val)); \
break; \
case 8: \
__asm__ __volatile__( \
"am"#asm_op".d" " %[ret], %[val], %[ptr] \n" \
"am"#asm_op".d" " %[ret], %[val], %[ptr] \n" \
: [ret] "=&r" (ret), [ptr] "+ZB"(*(u64 *)ptr) \
: [val] "r" (val)); \
break; \
@ -63,7 +63,7 @@ PERCPU_OP(and, and, &)
PERCPU_OP(or, or, |)
#undef PERCPU_OP
static __always_inline unsigned long __percpu_read(void *ptr, int size)
static __always_inline unsigned long __percpu_read(void __percpu *ptr, int size)
{
unsigned long ret;
@ -100,7 +100,7 @@ static __always_inline unsigned long __percpu_read(void *ptr, int size)
return ret;
}
static __always_inline void __percpu_write(void *ptr, unsigned long val, int size)
static __always_inline void __percpu_write(void __percpu *ptr, unsigned long val, int size)
{
switch (size) {
case 1:
@ -132,8 +132,7 @@ static __always_inline void __percpu_write(void *ptr, unsigned long val, int siz
}
}
static __always_inline unsigned long __percpu_xchg(void *ptr, unsigned long val,
int size)
static __always_inline unsigned long __percpu_xchg(void *ptr, unsigned long val, int size)
{
switch (size) {
case 1:

2
arch/loongarch/include/asm/setup.h
View File

@ -25,7 +25,7 @@ extern void set_merr_handler(unsigned long offset, void *addr, unsigned long len
#ifdef CONFIG_RELOCATABLE
struct rela_la_abs {
long offset;
long pc;
long symvalue;
};

10
arch/loongarch/kernel/relocate.c
View File

@ -52,7 +52,7 @@ static inline void __init relocate_absolute(long random_offset)
for (p = begin; (void *)p < end; p++) {
long v = p->symvalue;
uint32_t lu12iw, ori, lu32id, lu52id;
union loongarch_instruction *insn = (void *)p - p->offset;
union loongarch_instruction *insn = (void *)p->pc;
lu12iw = (v >> 12) & 0xfffff;
ori = v & 0xfff;
@ -102,6 +102,14 @@ static inline __init unsigned long get_random_boot(void)
return hash;
}
static int __init nokaslr(char *p)
{
pr_info("KASLR is disabled.\n");
return 0; /* Print a notice and silence the boot warning */
}
early_param("nokaslr", nokaslr);
static inline __init bool kaslr_disabled(void)
{
char *str;

27
arch/loongarch/kernel/time.c
View File

@ -58,21 +58,6 @@ static int constant_set_state_oneshot(struct clock_event_device *evt)
return 0;
}
static int constant_set_state_oneshot_stopped(struct clock_event_device *evt)
{
unsigned long timer_config;
raw_spin_lock(&state_lock);
timer_config = csr_read64(LOONGARCH_CSR_TCFG);
timer_config &= ~CSR_TCFG_EN;
csr_write64(timer_config, LOONGARCH_CSR_TCFG);
raw_spin_unlock(&state_lock);
return 0;
}
static int constant_set_state_periodic(struct clock_event_device *evt)
{
unsigned long period;
@ -92,6 +77,16 @@ static int constant_set_state_periodic(struct clock_event_device *evt)
static int constant_set_state_shutdown(struct clock_event_device *evt)
{
unsigned long timer_config;
raw_spin_lock(&state_lock);
timer_config = csr_read64(LOONGARCH_CSR_TCFG);
timer_config &= ~CSR_TCFG_EN;
csr_write64(timer_config, LOONGARCH_CSR_TCFG);
raw_spin_unlock(&state_lock);
return 0;
}
@ -161,7 +156,7 @@ int constant_clockevent_init(void)
cd->rating = 320;
cd->cpumask = cpumask_of(cpu);
cd->set_state_oneshot = constant_set_state_oneshot;
cd->set_state_oneshot_stopped = constant_set_state_oneshot_stopped;
cd->set_state_oneshot_stopped = constant_set_state_shutdown;
cd->set_state_periodic = constant_set_state_periodic;
cd->set_state_shutdown = constant_set_state_shutdown;
cd->set_next_event = constant_timer_next_event;

4
arch/loongarch/mm/pgtable.c
View File

@ -13,13 +13,13 @@ struct page *dmw_virt_to_page(unsigned long kaddr)
{
return pfn_to_page(virt_to_pfn(kaddr));
}
EXPORT_SYMBOL_GPL(dmw_virt_to_page);
EXPORT_SYMBOL(dmw_virt_to_page);
struct page *tlb_virt_to_page(unsigned long kaddr)
{
return pfn_to_page(pte_pfn(*virt_to_kpte(kaddr)));
}
EXPORT_SYMBOL_GPL(tlb_virt_to_page);
EXPORT_SYMBOL(tlb_virt_to_page);
pgd_t *pgd_alloc(struct mm_struct *mm)
{