zero_pud_populate

Name:zero_pud_populate

Proto:static int __ref zero_pud_populate(p4d_t *p4d, unsigned long addr, unsigned long end)

Type:int

Parameter:

Type	Parameter	Name
p4d_t *	p4d
unsigned long	addr
unsigned long	end

149

pud = pud_offset(p4d, addr)

152

Do

153

next = pud_addr_end(addr, end)

154

If IS_ALIGNED(addr, PUD_SIZE) && end - addr >= PUD_SIZE Then

157

pud_populate( & For dynamically allocated mm_structs, there is a dynamically sized cpumask* at the end of the structure, the size of which depends on the maximum CPU* number the system can see, pud, lm_alias(kasan_early_shadow_pmd))

159

pmd = pmd_offset(pud, addr)

160

pmd_populate_kernel( & For dynamically allocated mm_structs, there is a dynamically sized cpumask* at the end of the structure, the size of which depends on the maximum CPU* number the system can see, pmd, lm_alias(kasan_early_shadow_pte))

162

Continue

165

If The "pud_xxx()" functions here are trivial for a folded two-level* setup: the pmd is never bad, and a pmd always exists (as it's folded* into the pud entry) Then

168

If slab_is_available() Then

169

p = pmd_alloc( & For dynamically allocated mm_structs, there is a dynamically sized cpumask* at the end of the structure, the size of which depends on the maximum CPU* number the system can see, pud, addr)

170

If Not p Then Return -ENOMEM

172

Else

173

pud_populate( & For dynamically allocated mm_structs, there is a dynamically sized cpumask* at the end of the structure, the size of which depends on the maximum CPU* number the system can see, pud, early_alloc(PAGE_SIZE, NUMA_NO_NODE))

177

zero_pmd_populate(pud, addr, next)

178

When pud++, addr = next , addr != end cycle

180

Return 0

**Caller**
Name	Describe
zero_p4d_populate

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