selftests/vm: Fix test for virtual address range mapping for arm64 (eff33cfa) · Commits · 戴 / test

tools/testing/selftests/vm/virtual_address_range.c

+26 −9

Original line number	Diff line number	Diff line
		@@ -10,7 +10,6 @@
		#include <string.h>
		#include <unistd.h>
		#include <errno.h>
		#include <numaif.h>
		#include <sys/mman.h>
		#include <sys/time.h>

		@@ -32,15 +31,33 @@
		* 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_384TB 24576UL /* Number of 16GB chunks for 384TB */
		#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 = 48 + rand() % 15;
		int bits = HIGH_ADDR_SHIFT + rand() % (63 - HIGH_ADDR_SHIFT);

		return (char *) (1UL << bits);
		}
		@@ -50,14 +67,14 @@ static int validate_addr(char *ptr, int high_addr)
		unsigned long addr = (unsigned long) ptr;

		if (high_addr) {
		if (addr < ADDR_MARK_128TB) {
		if (addr < HIGH_ADDR_MARK) {
		printf("Bad address %lx\n", addr);
		return 1;
		}
		return 0;
		}

		if (addr > ADDR_MARK_128TB) {
		if (addr > HIGH_ADDR_MARK) {
		printf("Bad address %lx\n", addr);
		return 1;
		}
		@@ -79,12 +96,12 @@ static int validate_lower_address_hint(void)

		int main(int argc, char *argv[])
		{
		char *ptr[NR_CHUNKS_128TB];
		char *hptr[NR_CHUNKS_384TB];
		char *ptr[NR_CHUNKS_LOW];
		char *hptr[NR_CHUNKS_HIGH];
		char *hint;
		unsigned long i, lchunks, hchunks;

		for (i = 0; i < NR_CHUNKS_128TB; i++) {
		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);

		@@ -99,7 +116,7 @@ int main(int argc, char *argv[])
		}
		lchunks = i;

		for (i = 0; i < NR_CHUNKS_384TB; 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);

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