Page Fault

include/mem/page_fault.h View source View on GitHub

Structs

page_fault_info

struct page_fault_info (4 fields) source

§ vaddr_t addr

§ enum page_fault_access access

§ bool was_present

§ bool user

page_fault_handler_ops

struct page_fault_handler_ops (3 fields) source

§ bool (*is_valid_fault)(struct page_fault_info *pfi)

§ bool (*update_after_map)(vaddr_t vaddr, struct page *page)

§ paddr_t (*alloc_pages)(vaddr_t vaddr, uint8_t order)

page_fault_handler

struct page_fault_handler (1 field) source

§ struct page_fault_handler_ops *ops

page_fault_scratch_buffer

struct page_fault_scratch_buffer (2 fields) source

§ vaddr_t virt

§ uint64_t error_code

Enums

page_fault_access

enum page_fault_access (3 variants) source

§ PAGE_FAULT_READ

§ PAGE_FAULT_WRITE

§ PAGE_FAULT_EXEC

page_fault_error_code

enum page_fault_error_code : uint64_t (8 variants) source

§ PAGE_FAULT_EC_PRESENT = BIT(0)

P: protection violation, not a not-present page

§ PAGE_FAULT_EC_WRITE = BIT(1)

W/R: access was a write

§ PAGE_FAULT_EC_USER = BIT(2)

U/S: fault taken in user mode

§ PAGE_FAULT_EC_RESERVED = BIT(3)

RSVD: reserved bit set in a paging-structure entry

§ PAGE_FAULT_EC_INSTRUCTION = BIT(4)

I/D: instruction fetch

§ PAGE_FAULT_EC_PROTECTION_KEY = BIT(5)

PK: protection-key block

§ PAGE_FAULT_EC_SHADOW_STACK = BIT(6)

SS: shadow-stack access

§ PAGE_FAULT_EC_SGX = BIT(15)

SGX: enclave violation

Functions

page_fault_isr

enum irq_result page_fault_isr(struct irq_context *rsp, void *ctx)

source