TOA arm64 编译报错

[ken2008huang]

TOA arm64 编译报错
+pte_t *lookup_address(unsigned long addr, unsigned int *level)
+{

• pgd_t *pgd;
• pud_t *pud;
• pmd_t *pmd;
• if (unlikely(level)) {

•   WARN(1, "level unused on arm64\n");
  

•   *level = 0;
  

• }
• pgd = pgd_offset_k(addr);
• if (pgd_none(*pgd))

•   return NULL;
  

• pud = pud_offset(pgd, addr);
• if (pud_none(*pud))

•   return NULL;
  

• pmd = pmd_offset(pud, addr);
• if (pmd_none(*pmd))

•   return NULL;
  

• return pte_offset_kernel(pmd, addr);
  +}

[pxunl]

@ken2008huang
重新实现lookup_address还不行哦
报错：_PAGE_RW这个找不到定义。
求问最后解决了吗

[laurretang]

我也遇到类似的问题，请问最后解决了吗？
make -C /lib/modules/4.18.0-193.1.2.el8.aarch64/build M=/root/toa modules EXTRA_CFLAGS="-DTOA_DBG_MSG"
make[1]: Entering directory `/usr/src/kernels/linux-4.18.0-193.1.2.el8_2'

WARNING: Symbol version dump ./Module.symvers
is missing; modules will have no dependencies and modversions.

CC [M] /root/toa/toa.o
/root/toa/toa.c: In function ‘is_ro_addr’:
/root/toa/toa.c:104:5: error: implicit declaration of function ‘lookup_address’ [-Werror=implicit-function-declaration]
pte_t *pte = lookup_address(addr, &level);
^
/root/toa/toa.c:104:18: warning: initialization makes pointer from integer without a cast [enabled by default]
pte_t *pte = lookup_address(addr, &level);
^
/root/toa/toa.c:105:21: error: ‘_PAGE_RW’ undeclared (first use in this function)
if (pte->pte &~ _PAGE_RW)
^
/root/toa/toa.c:105:21: note: each undeclared identifier is reported only once for each function it appears in
/root/toa/toa.c: In function ‘set_addr_rw’:
/root/toa/toa.c:116:18: warning: initialization makes pointer from integer without a cast [enabled by default]
pte_t *pte = lookup_address(addr, &level);
^
/root/toa/toa.c:118:21: error: ‘_PAGE_RW’ undeclared (first use in this function)
if (pte->pte &~ _PAGE_RW) pte->pte |= _PAGE_RW;
^
/root/toa/toa.c: In function ‘set_addr_ro’:
/root/toa/toa.c:124:18: warning: initialization makes pointer from integer without a cast [enabled by default]
pte_t *pte = lookup_address(addr, &level);
^
/root/toa/toa.c:126:27: error: ‘_PAGE_RW’ undeclared (first use in this function)
pte->pte = pte->pte &~_PAGE_RW;
^
cc1: some warnings being treated as errors
make[2]: *** [/root/toa/toa.o] Error 1
make[1]: *** [module/root/toa] Error 2
make[1]: Leaving directory `/usr/src/kernels/linux-4.18.0-193.1.2.el8_2'