gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add arm64 support

Browse Source 
- add arm64 dependent codes with GICv3 and SVE support
- fix bugs based on architecture separation requests
This commit is contained in:
Takayuki Okamoto
2017-09-05 15:06:27 +09:00
parent 704096b139
commit 9989f41fd3
192 changed files with 26941 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
kernel/procfs.c
View File

@@ -9,6 +9,7 @@
/*
* HISTORY:
*/
/* procfs.c COPYRIGHT FUJITSU LIMITED 2015-2017 */
#include <types.h>
#include <kmsg.h>
@@ -231,6 +232,12 @@ void process_procfs_request(struct ikc_scd_packet *rpacket)
eof = 1;
goto end;
}
#ifdef POSTK_DEBUG_ARCH_DEP_42 /* /proc/cpuinfo support added. */
else if (!strcmp(p, "cpuinfo")) { /* "/proc/cpuinfo" */
ans = ihk_mc_show_cpuinfo(buf, count, offset, &eof);
goto end;
}
#endif /* POSTK_DEBUG_ARCH_DEP_42 */
else {
kprintf("unsupported procfs entry: %s\n", p);
goto end;
@@ -285,8 +292,12 @@ void process_procfs_request(struct ikc_scd_packet *rpacket)
goto end;
}
#ifdef POSTK_DEBUG_TEMP_FIX_52 /* NUMA support(memory area determination) */
if (!is_mckernel_memory(pa)) {
#else
if (pa < ihk_mc_get_memory_address(IHK_MC_GMA_MAP_START, 0) ||
pa >= ihk_mc_get_memory_address(IHK_MC_GMA_MAP_END, 0)) {
#endif /* POSTK_DEBUG_TEMP_FIX_52 */
ans = -EIO;
goto end;
}
@@ -308,16 +319,34 @@ void process_procfs_request(struct ikc_scd_packet *rpacket)
*/
if (strcmp(p, "maps") == 0) {
struct vm_range *range;
#ifdef POSTK_DEBUG_TEMP_FIX_47 /* /proc/<pid>/maps 1024 byte over read fix. */
int left = PAGE_SIZE * 2;
#else /* POSTK_DEBUG_TEMP_FIX_47 */
int left = r->count - 1; /* extra 1 for terminating NULL */
#endif /* POSTK_DEBUG_TEMP_FIX_47 */
int written = 0;
char *_buf = buf;
#ifdef POSTK_DEBUG_TEMP_FIX_47 /* /proc/<pid>/maps 1024 byte over read fix. */
int len = 0;
char *tmp = NULL;
_buf = tmp = kmalloc(left, IHK_MC_AP_CRITICAL);
if (!tmp) {
kprintf("%s: error allocating /proc/self/maps buffer\n",
__FUNCTION__);
ans = 0;
goto end;
}
#endif /* POSTK_DEBUG_TEMP_FIX_47 */
#ifndef POSTK_DEBUG_TEMP_FIX_47 /* /proc/<pid>/maps 1024 byte over read fix. */
/* Starting from the middle of a proc file is not supported for maps */
if (offset > 0) {
ans = 0;
eof = 1;
goto end;
}
#endif /* POSTK_DEBUG_TEMP_FIX_47 */
ihk_mc_spinlock_lock_noirq(&vm->memory_range_lock);
@@ -347,17 +376,42 @@ void process_procfs_request(struct ikc_scd_packet *rpacket)
_buf += written_now;
written += written_now;
#ifdef POSTK_DEBUG_TEMP_FIX_47 /* /proc/<pid>/maps 1024 byte over read fix. */
if (left == 0) {
kprintf("%s(): WARNING: buffer too small to fill proc/maps\n",
__FUNCTION__);
break;
}
#else /* POSTK_DEBUG_TEMP_FIX_47 */
if (left == 1) {
kprintf("%s(): WARNING: buffer too small to fill proc/maps\n",
__FUNCTION__);
break;
}
#endif /* POSTK_DEBUG_TEMP_FIX_47 */
}
ihk_mc_spinlock_unlock_noirq(&vm->memory_range_lock);
#ifdef POSTK_DEBUG_TEMP_FIX_47 /* /proc/<pid>/maps 1024 byte over read fix. */
len = strlen(tmp);
if (r->offset < len) {
if (r->offset + r->count < len) {
ans = r->count;
} else {
eof = 1;
ans = len;
}
strncpy(buf, tmp + r->offset, ans);
} else if (r->offset == len) {
ans = 0;
eof = 1;
}
kfree(tmp);
#else /* POSTK_DEBUG_TEMP_FIX_47 */
ans = written + 1;
eof = 1;
#endif /* POSTK_DEBUG_TEMP_FIX_47 */
goto end;
}