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do_process_vm_read_writev: don't check vm_range (workaround for Fugaku)

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Change-Id: I4ce9b5397ed876dff651c67658e43811d83658dd
This commit is contained in:
Masamichi Takagi
2020-06-12 11:52:27 +09:00
parent dea7d00545
commit 6f3be17c19
1 changed files with 4 additions and 0 deletions
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4
arch/arm64/kernel/syscall.c
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@ -2141,7 +2141,9 @@ int do_process_vm_read_writev(int pid,
unsigned long lpage_left, rpage_left; unsigned long lpage_left, rpage_left;
unsigned long lpsize, rpsize; unsigned long lpsize, rpsize;
void *rva, *lva; void *rva, *lva;
#if 0
struct vm_range *range; struct vm_range *range;
#endif
struct mcs_rwlock_node_irqsave lock; struct mcs_rwlock_node_irqsave lock;
struct mcs_rwlock_node update_lock; struct mcs_rwlock_node update_lock;
@ -2154,6 +2156,7 @@ int do_process_vm_read_writev(int pid,
return -EINVAL; return -EINVAL;
} }
#if 0
/* Check if parameters are okay */ /* Check if parameters are okay */
ihk_rwspinlock_read_lock_noirq(&lthread->vm->memory_range_lock); ihk_rwspinlock_read_lock_noirq(&lthread->vm->memory_range_lock);
@ -2182,6 +2185,7 @@ arg_out:
if (ret != 0) { if (ret != 0) {
goto out; goto out;
} }
#endif
for (li = 0; li < liovcnt; ++li) { for (li = 0; li < liovcnt; ++li) {
llen += local_iov[li].iov_len; llen += local_iov[li].iov_len;