Web最后我们创建内核地址空间并让 CPU 开启分页模式, MMU 在地址转换的时候使用内核的多级页表,这一切均在一行之内做到: - 首先,我们引用 ``KERNEL_SPACE`` ,这是它第一次被使用,就在此时它会被初始化,调用 ``MemorySet::new_kernel`` 创建一个内核地址空间并 … WebDon't forget to set up PMP before switching out of M mode, if implemented on your CPU. At minimum set pmpcfg0 to 0x1f ( pmp0cfg = NAPOT + RWX) and pmpaddr0 to -1 (whole …
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WebThe arch specific hibernation header consists of satp, hartid, and the cpu_resume address. The kernel built version is also need to be saved into the hibernation image header to making sure only the same kernel is restore when resume. swsusp_arch_resume() creates a temporary page table that covering only the linear map. ... WebNov 27, 2024 · REG_S sp, (SBI_TRAP_REGS_OFFSET(sp) - SBI_TRAP_REGS_SIZE) (t0) add sp, t0, - (SBI_TRAP_REGS_SIZE) REG_S zero, SBI_TRAP_REGS_OFFSET(zero) (sp) REG_S ra, SBI_TRAP_REGS_OFFSET(ra) (sp) REG_S gp, SBI_TRAP_REGS_OFFSET(gp) (sp) REG_S tp, SBI_TRAP_REGS_OFFSET(tp) (sp) … diane keaton house laguna beach
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Web.global _start _start: csrr t0, mhartid bnez t0, spin # park hart if id is not 0 li a0, 65 # write 'A' call uart_write li a0, 10 # write '\n' call uart_write setup: li t0, (0b01 << 11) # set MPP to 1 (supervisor mode) csrw mstatus, t0 csrw satp, zero # turn off paging la t1, kernel csrw mepc, t1 mret # now we're in supervisor mode kernel: li a0, … Web一个叫 satp (Supervisor Address Translation and Protection,监管者地址转换和保护) 的 S 模式控制状态寄存器控制了分页系统。 如图 10.12 所示,satp 有三个域。 MODE 域可 以开启分页并选择页表级数,图 10.13 展示了它的编码。 ASID (Address Space Identifier, 地址空间标识符)域是可选的,它可以用来降低上下文切换的开销。 最后,PPN 字段保存 了 … WebApr 14, 2024 · 2024-05-16T22:54:20.120Z cpu40:7579038)VMW_SATP_LOCAL: satp_local_updatePath:856: Failed to update path "vmhba32:C0:T0:L0" … diane keaton house