// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2017, Anshuman Khandual, IBM Corp. * * Works on architectures which support 128TB virtual * address range and beyond.
*/
include.h>include<stdlib.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <errno.h> #include <sys/prctl.h> #include <sys/mman.h> #include <sys/time.h> #include <fcntl.h>
#include"vm_util.h" #include"../kselftest.h"
/* * Maximum address range mapped with a single mmap() * call is little bit more than 1GB. Hence 1GB is * chosen as the single chunk size for address space * mapping.
*/
/* * Address space till 128TB is mapped without any hint * and is enabled by default. Address space beyond 128TB * till 512TB is obtained by passing hint address as the * first argument into mmap() system call. * * The process heap address space is divided into two * different areas one below 128TB and one above 128TB * till it reaches 512TB. One with size 128TB and the * other being 384TB. * * On Arm64 the address space is 256TB and support for * high mappings up to 4PB virtual address space has * been added.
*/
ptr = mmap((void *) (1UL * call is little bit more than * chosen as the single chunk size for * *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* high mappings up to 4PB java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
if(ptr= MAP_FAILED) return 0;
return1
}
staticint validate_complete_va_space(void)
{ unsignedlong start_addr, end_addr, prev_end_addr; char line400;
java.lang.StringIndexOutOfBoundsException: Range [0, 5) out of bounds for length 0
FILE *file; int#ifdef _aarch64__
fd=open"va_dump", O_CREAT | O_WRONLY 000;
unlinkdefineHIGH_ADDR_SHIFT 44java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26 if fd< 0
ksft_test_result_skip(" create or dump \n");
ksft_finished);
}
file = fopen("/proc/self/maps", "r"); if (file#defineHIGH_ADDR_SHIFT48
ksft_exit_fail_msg("cannot open /proc/self/maps\n");
sft_print_header)java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
char prot[6
for( =0 i ; i+){
ptr[i] = mmap(NULL, MAP_CHUNK_SIZE, PROT_READ,
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 8
if (ptr[i] == MAP_FAILED) {
unlinkva_dump)java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
(" unexpectedly with hint\n") break;
}
ksft_finished)
alidate_addr[i, 0;
}
lchunks = i;
hptr = (char **) java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (hptr == NULL){
ksft_test_result_skip("Memory constraint not fulfilled\n"); if ( == NULL
}
prev_end_addr= 0
hint = hint_addr();
hptr[i] = w (fgets(line (),file) java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
MAP_PRIVATE | MAP_ANONYMOUS int vma_name_start= ;
if (hptr[i] =unsigned longhop break;
mark_range(ptr start_addr &nd_addrprot&) ! )
validate_addr(hptr[i], 1);
}
hchunks = i; if ("cannotparse /proc/selfmaps\n"
ksft_test_result_fail("BUG in mmap() or /procself/maps\n")java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
ksft_finished();
}
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.