From b035ffd11813524d7c0e44354f5c4bdd281f4b37 Mon Sep 17 00:00:00 2001 From: Juergen Lock Date: Thu, 25 Mar 2010 22:11:17 +0100 Subject: Fix bsd-user qemu_vmalloc() host page protection code Just do the same as linux-user does. Signed-off-by: Juergen Lock Signed-off-by: Blue Swirl --- bsd-user/mmap.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'bsd-user') diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c index 139cd3f44..207c774fb 100644 --- a/bsd-user/mmap.c +++ b/bsd-user/mmap.c @@ -77,16 +77,15 @@ 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_ANON, -1, 0); - addr = (unsigned long)p; - if (addr == (target_ulong) addr) { + if (h2g_valid(p)) { /* Allocated region overlaps guest address space. This may recurse. */ + abi_ulong addr = h2g(p); page_set_flags(addr & TARGET_PAGE_MASK, TARGET_PAGE_ALIGN(addr + size), PAGE_RESERVED); } -- cgit v1.2.3