Commit 0aff9b57 authored by Anton Blanchard's avatar Anton Blanchard

ppc64: various fixes to sys32_sysinfo, from Will Schmidt

parent 9a1a077b
...@@ -1136,7 +1136,11 @@ struct sysinfo32 { ...@@ -1136,7 +1136,11 @@ struct sysinfo32 {
u32 totalswap; u32 totalswap;
u32 freeswap; u32 freeswap;
unsigned short procs; unsigned short procs;
char _f[22]; unsigned short pad;
u32 totalhigh;
u32 freehigh;
u32 mem_unit;
char _f[20-2*sizeof(long)-sizeof(int)];
}; };
extern asmlinkage long sys_sysinfo(struct sysinfo *info); extern asmlinkage long sys_sysinfo(struct sysinfo *info);
...@@ -1145,11 +1149,30 @@ asmlinkage long sys32_sysinfo(struct sysinfo32 *info) ...@@ -1145,11 +1149,30 @@ asmlinkage long sys32_sysinfo(struct sysinfo32 *info)
{ {
struct sysinfo s; struct sysinfo s;
int ret, err; int ret, err;
int bitcount=0;
mm_segment_t old_fs = get_fs (); mm_segment_t old_fs = get_fs ();
set_fs (KERNEL_DS); set_fs (KERNEL_DS);
ret = sys_sysinfo(&s); ret = sys_sysinfo(&s);
set_fs (old_fs); set_fs (old_fs);
/* Check to see if any memory value is too large for 32-bit and
* scale down if needed.
*/
if ((s.totalram >> 32) || (s.totalswap >> 32)) {
while (s.mem_unit < PAGE_SIZE) {
s.mem_unit <<= 1;
bitcount++;
}
s.totalram >>=bitcount;
s.freeram >>= bitcount;
s.sharedram >>= bitcount;
s.bufferram >>= bitcount;
s.totalswap >>= bitcount;
s.freeswap >>= bitcount;
s.totalhigh >>= bitcount;
s.freehigh >>= bitcount;
}
err = put_user (s.uptime, &info->uptime); err = put_user (s.uptime, &info->uptime);
err |= __put_user (s.loads[0], &info->loads[0]); err |= __put_user (s.loads[0], &info->loads[0]);
err |= __put_user (s.loads[1], &info->loads[1]); err |= __put_user (s.loads[1], &info->loads[1]);
...@@ -1161,6 +1184,9 @@ asmlinkage long sys32_sysinfo(struct sysinfo32 *info) ...@@ -1161,6 +1184,9 @@ asmlinkage long sys32_sysinfo(struct sysinfo32 *info)
err |= __put_user (s.totalswap, &info->totalswap); err |= __put_user (s.totalswap, &info->totalswap);
err |= __put_user (s.freeswap, &info->freeswap); err |= __put_user (s.freeswap, &info->freeswap);
err |= __put_user (s.procs, &info->procs); err |= __put_user (s.procs, &info->procs);
err |= __put_user (s.totalhigh, &info->totalhigh);
err |= __put_user (s.freehigh, &info->freehigh);
err |= __put_user (s.mem_unit, &info->mem_unit);
if (err) if (err)
return -EFAULT; return -EFAULT;
......
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