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-rw-r--r--tools/testing/selftests/vm/virtual_address_range.c139
1 files changed, 0 insertions, 139 deletions
diff --git a/tools/testing/selftests/vm/virtual_address_range.c b/tools/testing/selftests/vm/virtual_address_range.c
deleted file mode 100644
index c0592646ed93..000000000000
--- a/tools/testing/selftests/vm/virtual_address_range.c
+++ /dev/null
@@ -1,139 +0,0 @@
-// 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 <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include <sys/mman.h>
-#include <sys/time.h>
-
-/*
- * Maximum address range mapped with a single mmap()
- * call is little bit more than 16GB. Hence 16GB is
- * chosen as the single chunk size for address space
- * mapping.
- */
-#define MAP_CHUNK_SIZE 17179869184UL /* 16GB */
-
-/*
- * 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 no high mappings
- * are supported so far.
- */
-
-#define NR_CHUNKS_128TB 8192UL /* Number of 16GB chunks for 128TB */
-#define NR_CHUNKS_256TB (NR_CHUNKS_128TB * 2UL)
-#define NR_CHUNKS_384TB (NR_CHUNKS_128TB * 3UL)
-
-#define ADDR_MARK_128TB (1UL << 47) /* First address beyond 128TB */
-#define ADDR_MARK_256TB (1UL << 48) /* First address beyond 256TB */
-
-#ifdef __aarch64__
-#define HIGH_ADDR_MARK ADDR_MARK_256TB
-#define HIGH_ADDR_SHIFT 49
-#define NR_CHUNKS_LOW NR_CHUNKS_256TB
-#define NR_CHUNKS_HIGH 0
-#else
-#define HIGH_ADDR_MARK ADDR_MARK_128TB
-#define HIGH_ADDR_SHIFT 48
-#define NR_CHUNKS_LOW NR_CHUNKS_128TB
-#define NR_CHUNKS_HIGH NR_CHUNKS_384TB
-#endif
-
-static char *hind_addr(void)
-{
- int bits = HIGH_ADDR_SHIFT + rand() % (63 - HIGH_ADDR_SHIFT);
-
- return (char *) (1UL << bits);
-}
-
-static int validate_addr(char *ptr, int high_addr)
-{
- unsigned long addr = (unsigned long) ptr;
-
- if (high_addr) {
- if (addr < HIGH_ADDR_MARK) {
- printf("Bad address %lx\n", addr);
- return 1;
- }
- return 0;
- }
-
- if (addr > HIGH_ADDR_MARK) {
- printf("Bad address %lx\n", addr);
- return 1;
- }
- return 0;
-}
-
-static int validate_lower_address_hint(void)
-{
- char *ptr;
-
- ptr = mmap((void *) (1UL << 45), MAP_CHUNK_SIZE, PROT_READ |
- PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-
- if (ptr == MAP_FAILED)
- return 0;
-
- return 1;
-}
-
-int main(int argc, char *argv[])
-{
- char *ptr[NR_CHUNKS_LOW];
- char *hptr[NR_CHUNKS_HIGH];
- char *hint;
- unsigned long i, lchunks, hchunks;
-
- for (i = 0; i < NR_CHUNKS_LOW; i++) {
- ptr[i] = mmap(NULL, MAP_CHUNK_SIZE, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-
- if (ptr[i] == MAP_FAILED) {
- if (validate_lower_address_hint())
- return 1;
- break;
- }
-
- if (validate_addr(ptr[i], 0))
- return 1;
- }
- lchunks = i;
-
- for (i = 0; i < NR_CHUNKS_HIGH; i++) {
- hint = hind_addr();
- hptr[i] = mmap(hint, MAP_CHUNK_SIZE, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-
- if (hptr[i] == MAP_FAILED)
- break;
-
- if (validate_addr(hptr[i], 1))
- return 1;
- }
- hchunks = i;
-
- for (i = 0; i < lchunks; i++)
- munmap(ptr[i], MAP_CHUNK_SIZE);
-
- for (i = 0; i < hchunks; i++)
- munmap(hptr[i], MAP_CHUNK_SIZE);
-
- return 0;
-}