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authorLinus Torvalds <torvalds@linux-foundation.org>2021-02-28 12:06:45 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2021-02-28 12:06:45 -0800
commitcd278456d4ca0e6b3d5e10ace4566524baa144eb (patch)
treea5e64b03b5575c6539dd9b39baa8dcf8f10d422f /arch/csky/kernel/smp.c
parent7d19ea5e99731f5346b047003bbe65117a86d12d (diff)
parent6607aa6f6b68fc9b5955755f1b1be125cf2a9d03 (diff)
Merge tag 'csky-for-linus-5.12-rc1' of git://github.com/c-sky/csky-linux
Pull arch/csky updates from Guo Ren: "Features: - add new memory layout 2.5G(user):1.5G(kernel) - add kmemleak support - reconstruct VDSO framework: add VDSO with GENERIC_GETTIMEOFDAY, GENERIC_TIME_VSYSCALL, HAVE_GENERIC_VDSO - add faulthandler_disabled() check - support (fix) swapon - add (fix) _PAGE_ACCESSED for default pgprot - abort uaccess retries upon fatal signal (from arm) Fixes and optimizations: - fix perf probe failure - fix show_regs doesn't contain regs->usp - remove custom asm/atomic.h implementation - fix barrier design - fix futex SMP implementation - fix asm/cmpxchg.h with correct ordering barrier - cleanup asm/spinlock.h - fix PTE global for 2.5:1.5 virtual memory - remove prologue of page fault handler in entry.S - fix TLB maintenance synchronization problem - add show_tlb for CPU_CK860 debug - fix FAULT_FLAG_XXX param for handle_mm_fault - fix update_mmu_cache called with user io mapping - fix do_page_fault parent irq status - fix a size determination in gpr_get() - pgtable.h: Coding convention - kprobe: Fix code in simulate without 'long' - fix pfn_valid error with wrong max_mapnr - use free_initmem_default() in free_initmem() - fix compile error" * tag 'csky-for-linus-5.12-rc1' of git://github.com/c-sky/csky-linux: (30 commits) csky: Fixup compile error csky: use free_initmem_default() in free_initmem() csky: Fixup pfn_valid error with wrong max_mapnr csky: Add VDSO with GENERIC_GETTIMEOFDAY, GENERIC_TIME_VSYSCALL, HAVE_GENERIC_VDSO csky: kprobe: Fixup code in simulate without 'long' csky: Fixup swapon csky: pgtable.h: Coding convention csky: Fixup _PAGE_ACCESSED for default pgprot csky: remove unused including <linux/version.h> csky: Fix a size determination in gpr_get() csky: Reconstruct VDSO framework csky: mm: abort uaccess retries upon fatal signal csky: Sync riscv mm/fault.c for easy maintenance csky: Fixup do_page_fault parent irq status csky: Add faulthandler_disabled() check csky: Fixup update_mmu_cache called with user io mapping csky: Fixup FAULT_FLAG_XXX param for handle_mm_fault csky: Add show_tlb for CPU_CK860 debug csky: Fix TLB maintenance synchronization problem csky: Add kmemleak support ...
Diffstat (limited to 'arch/csky/kernel/smp.c')
-rw-r--r--arch/csky/kernel/smp.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/csky/kernel/smp.c b/arch/csky/kernel/smp.c
index 041d0de6a1b6..0f9f5eef9338 100644
--- a/arch/csky/kernel/smp.c
+++ b/arch/csky/kernel/smp.c
@@ -203,8 +203,8 @@ volatile unsigned int secondary_hint;
volatile unsigned int secondary_hint2;
volatile unsigned int secondary_ccr;
volatile unsigned int secondary_stack;
-
-unsigned long secondary_msa1;
+volatile unsigned int secondary_msa1;
+volatile unsigned int secondary_pgd;
int __cpu_up(unsigned int cpu, struct task_struct *tidle)
{
@@ -216,6 +216,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle)
secondary_hint2 = mfcr("cr<21, 1>");
secondary_ccr = mfcr("cr18");
secondary_msa1 = read_mmu_msa1();
+ secondary_pgd = mfcr("cr<29, 15>");
/*
* Because other CPUs are in reset status, we must flush data
@@ -262,8 +263,6 @@ void csky_start_secondary(void)
flush_tlb_all();
write_mmu_pagemask(0);
- TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir);
- TLBMISS_HANDLER_SETUP_PGD_KERNEL(swapper_pg_dir);
#ifdef CONFIG_CPU_HAS_FPU
init_fpu();