Nick Hu 8ad8b72721 riscv: Add KASAN support ... This patch ports the feature Kernel Address SANitizer (KASAN). Note: The start address of shadow memory is at the beginning of kernel space, which is 2^64 - (2^39 / 2) in SV39. The size of the kernel space is 2^38 bytes so the size of shadow memory should be 2^38 / 8. Thus, the shadow memory would not overlap with the fixmap area. There are currently two limitations in this port, 1. RV64 only: KASAN need large address space for extra shadow memory region. 2. KASAN can't debug the modules since the modules are allocated in VMALLOC area. We mapped the shadow memory, which corresponding to VMALLOC area, to the kasan_early_shadow_page because we don't have enough physical space for all the shadow memory corresponding to VMALLOC area. Signed-off-by: Nick Hu <nickhu@andestech.com> Reported-by: Greentime Hu <green.hu@gmail.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>		2020-01-22 13:09:58 -08:00
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Makefile	riscv: add nommu support	2019-11-17 15:17:39 -08:00
delay.c	riscv: delay: use do_div() instead of __udivdi3()	2019-08-08 16:05:38 -07:00
memcpy.S	riscv: Add KASAN support	2020-01-22 13:09:58 -08:00
memset.S	riscv: Add KASAN support	2020-01-22 13:09:58 -08:00
tishift.S	riscv: Less inefficient gcc tishift helpers (and export their symbols)	2020-01-18 19:13:41 -08:00
uaccess.S	riscv: fix compile failure with EXPORT_SYMBOL() & !MMU	2019-12-27 21:44:36 -08:00