This region is currently only reserved for 32-bit processes, which puts Wow64 at a disadvantage. The larger address space means it's not often an issue, but it's better to be explicit. Adding the reservation also causes ntdll/unix/virtual.c to consider that region first when making Wow64 allocations, before continuing through to the lower reservations. (And that's important for, e.g., changes like MR !2879.)
From: Tim Clem tclem@codeweavers.com
--- loader/preloader_mac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/loader/preloader_mac.c b/loader/preloader_mac.c index 8e249a7dc4d..817a91779ed 100644 --- a/loader/preloader_mac.c +++ b/loader/preloader_mac.c @@ -90,11 +90,11 @@ static struct wine_preload_info preload_info[] = { (void *)0x00001000, 0x0000f000 }, /* low 64k */ { (void *)0x00010000, 0x00100000 }, /* DOS area */ { (void *)0x00110000, 0x67ef0000 }, /* low memory area */ - { (void *)0x7f000000, 0x03000000 }, /* top-down allocations + shared heap + virtual heap */ + { (void *)0x7f000000, 0x03000000 }, /* shared user data and top-down allocations + shared heap + virtual heap */ #else /* __i386__ */ { (void *)0x000000010000, 0x00100000 }, /* DOS area */ { (void *)0x000000110000, 0x67ef0000 }, /* low memory area */ - { (void *)0x00007ff00000, 0x000f0000 }, /* shared user data */ + { (void *)0x00007f000000, 0x03000000 }, /* shared user data and Wow64 top-down allocations + shared heap + virtual heap */ { (void *)0x000100000000, 0x14000000 }, /* WINE_4GB_RESERVE section */ { (void *)0x7ff000000000, 0x01ff0000 }, /* top-down allocations + virtual heap */ #endif /* __i386__ */
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Tim Clem -
Tim Clem (＠tclem)