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linux-user: Use h2g_valid in qemu_vmalloc. 

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2010-03-10 14:38:59 -08:00 committed by Paul Brook
parent b9f83121a1
commit 7bc7b099df
1 changed files with 4 additions and 5 deletions
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9
linux-user/mmap.c
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@ -80,16 +80,15 @@ void mmap_unlock(void)
void *qemu_vmalloc(size_t size)
{
void *p;
unsigned long addr;
mmap_lock();
/* Use map and mark the pages as used. */
p = mmap(NULL, size, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
addr = (unsigned long)p;
if (addr == (target_ulong) addr) {
/* Allocated region overlaps guest address space.
This may recurse. */
if (h2g_valid(p)) {
/* Allocated region overlaps guest address space. This may recurse. */
unsigned long addr = h2g(p);
page_set_flags(addr & TARGET_PAGE_MASK, TARGET_PAGE_ALIGN(addr + size),
PAGE_RESERVED);
}