diff options
| -rw-r--r-- | cpu-all.h | 2 | ||||
| -rw-r--r-- | linux-user/mmap.c | 14 |
2 files changed, 9 insertions, 7 deletions
@@ -629,8 +629,10 @@ extern unsigned long guest_base; extern int have_guest_base; extern unsigned long reserved_va; #define GUEST_BASE guest_base +#define RESERVED_VA reserved_va #else #define GUEST_BASE 0ul +#define RESERVED_VA 0ul #endif /* All direct uses of g2h and h2g need to go away for usermode softmmu. */ diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 39da6dfb40..e10a6ef2e2 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -225,13 +225,13 @@ static abi_ulong mmap_find_vma_reserved(abi_ulong start, abi_ulong size) int prot; int looped = 0; - if (size > reserved_va) { + if (size > RESERVED_VA) { return (abi_ulong)-1; } last_addr = start; for (addr = start; last_addr + size != addr; addr += qemu_host_page_size) { - if (last_addr + size >= reserved_va + if (last_addr + size >= RESERVED_VA || (abi_ulong)(last_addr + size) < last_addr) { if (looped) { return (abi_ulong)-1; @@ -271,7 +271,7 @@ abi_ulong mmap_find_vma(abi_ulong start, abi_ulong size) size = HOST_PAGE_ALIGN(size); - if (reserved_va) { + if (RESERVED_VA) { return mmap_find_vma_reserved(start, size); } @@ -651,7 +651,7 @@ int target_munmap(abi_ulong start, abi_ulong len) ret = 0; /* unmap what we can */ if (real_start < real_end) { - if (reserved_va) { + if (RESERVED_VA) { mmap_reserve(real_start, real_end - real_start); } else { ret = munmap(g2h(real_start), real_end - real_start); @@ -679,7 +679,7 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, flags, g2h(new_addr)); - if (reserved_va && host_addr != MAP_FAILED) { + if (RESERVED_VA && host_addr != MAP_FAILED) { /* If new and old addresses overlap then the above mremap will already have failed with EINVAL. */ mmap_reserve(old_addr, old_size); @@ -701,7 +701,7 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, } } else { int prot = 0; - if (reserved_va && old_size < new_size) { + if (RESERVED_VA && old_size < new_size) { abi_ulong addr; for (addr = old_addr + old_size; addr < old_addr + new_size; @@ -711,7 +711,7 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, } if (prot == 0) { host_addr = mremap(g2h(old_addr), old_size, new_size, flags); - if (host_addr != MAP_FAILED && reserved_va && old_size > new_size) { + if (host_addr != MAP_FAILED && RESERVED_VA && old_size > new_size) { mmap_reserve(old_addr + old_size, new_size - old_size); } } else { |