Alan Kao 9411ec60c2 Auto-detect whether a FPU exists ... We expect that a kernel with CONFIG_FPU=y can still support no-FPU machines. To do so, the kernel should first examine the existence of a FPU, then do nothing if a FPU does exist; otherwise, it should disable/bypass all FPU-related functions. In this patch, a new global variable, has_fpu, is created and determined when parsing the hardware capability from device tree during booting. This variable is used in those FPU-related functions. Signed-off-by: Alan Kao <alankao@andestech.com> Cc: Greentime Hu <greentime@andestech.com> Cc: Vincent Chen <vincentc@andestech.com> Cc: Zong Li <zong@andestech.com> Cc: Nick Hu <nickhu@andestech.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>		2018-10-22 17:02:23 -07:00
..
asm-offsets.h
asm-prototypes.h	RISC-V: include linux/ftrace.h in asm-prototypes.h	2018-09-24 13:12:27 -07:00
asm.h	RISC-V: use RISCV_{INT,SHORT} instead of {INT,SHORT} for asm macros	2017-11-30 10:01:10 -08:00
atomic.h	locking/atomics: Rework ordering barriers	2018-07-25 11:53:59 +02:00
barrier.h	riscv/barrier: Define __smp_{store_release,load_acquire}	2018-04-02 19:59:43 -07:00
bitops.h	RISC-V: __test_and_op_bit_ord should be strongly ordered	2017-11-28 14:04:05 -08:00
bug.h	RISC-V: use RISCV_{INT,SHORT} instead of {INT,SHORT} for asm macros	2017-11-30 10:01:10 -08:00
cache.h
cacheflush.h	riscv: use NULL instead of a plain 0	2018-06-07 08:01:50 -07:00
cmpxchg.h	riscv/atomic: Strengthen implementations with fences	2018-04-02 19:59:44 -07:00
csr.h	RISC-V: add a definition for the SIE SEIE bit	2018-08-13 08:31:31 -07:00
current.h
delay.h
dma-mapping.h	riscv: add swiotlb support	2018-05-19 08:46:26 +02:00
elf.h
fence.h	riscv/spinlock: Strengthen implementations with fences	2018-04-02 19:59:43 -07:00
ftrace.h	riscv/ftrace: Add DYNAMIC_FTRACE_WITH_REGS support	2018-04-02 19:59:13 -07:00
hwcap.h
io.h	riscv: remove CONFIG_MMU ifdefs	2018-01-07 15:14:39 -08:00
irq.h	RISC-V: remove INTERRUPT_CAUSE_* defines from asm/irq.h	2018-08-13 08:31:31 -07:00
irqflags.h	riscv: rename SR_* constants to match the spec	2018-01-07 15:14:39 -08:00
Kbuild	riscv: Delete asm/compat.h	2018-08-20 11:25:35 -07:00
kprobes.h
linkage.h
mmu_context.h	riscv: inline set_pgdir into its only caller	2018-01-30 19:16:17 -08:00
mmu.h	RISC-V: Flush I$ when making a dirty page executable	2017-11-30 12:58:25 -08:00
module.h	RISC-V: Add section of GOT.PLT for kernel module	2018-04-02 20:00:54 -07:00
page.h
pci.h	PCI: remove PCI_DMA_BUS_IS_PHYS	2018-05-07 07:15:41 +02:00
perf_event.h	RISC-V: Fix !CONFIG_SMP compilation error	2018-08-13 08:31:32 -07:00
pgalloc.h
pgtable-32.h
pgtable-64.h
pgtable-bits.h	mm: introduce ARCH_HAS_PTE_SPECIAL	2018-06-07 17:34:35 -07:00
pgtable.h	riscv: remove CONFIG_MMU ifdefs	2018-01-07 15:14:39 -08:00
processor.h
ptrace.h	riscv: rename SR_* constants to match the spec	2018-01-07 15:14:39 -08:00
sbi.h
smp.h	clocksource: new RISC-V SBI timer driver	2018-08-13 08:31:31 -07:00
spinlock_types.h
spinlock.h	riscv/spinlock: Strengthen implementations with fences	2018-04-02 19:59:43 -07:00
string.h
switch_to.h	Auto-detect whether a FPU exists	2018-10-22 17:02:23 -07:00
syscall.h
thread_info.h	Construct init thread stack in the linker script rather than by union	2018-01-09 23:21:02 +00:00
timex.h	RISC-V: Use define for get_cycles like other architectures	2017-11-30 10:12:21 -08:00
tlb.h	riscv: tlb: Provide definition of tlb_flush() before including tlb.h	2018-08-28 12:58:35 -07:00
tlbflush.h	riscv: use NULL instead of a plain 0	2018-06-07 08:01:50 -07:00
uaccess.h	riscv: split the declaration of __copy_user	2018-06-09 12:34:31 -07:00
unistd.h	RISC-V: Don't use a global include guard for uapi/asm/syscalls.h	2018-08-20 10:55:24 -07:00
vdso.h	RISC-V: Define sys_riscv_flush_icache when SMP=n	2018-08-20 10:55:24 -07:00
word-at-a-time.h