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Change macOS mmap tag to fix conflict with IOAccelerator

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Tag 100 is assigned to "IOAccelerator" (the GPU driver stack on Apple silicon), which makes for confusing output when debugging.

To avoid conflicts, use a tag in the reserved application-specific range from 240–255 (inclusive).

All assigned tags: 94d3b45284/osfmk/mach/vm_statistics.h (L773-L775)
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Danny Lin 2024-06-10 15:06:39 -07:00 • committed by GitHub
parent 03020fbf81
commit e8b5e51b00
WARNING! Although there is a key with this ID in the database it does not verify this commit! This commit is SUSPICIOUS.
GPG key ID: B5690EEEBB952194
1 changed files with 1 additions and 1 deletions
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src/prim/unix/prim.c
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@ -240,7 +240,7 @@ static int unix_mmap_fd(void) {
#if defined(VM_MAKE_TAG)
// macOS: tracking anonymous page with a specific ID. (All up to 98 are taken officially but LLVM sanitizers had taken 99)
int os_tag = (int)mi_option_get(mi_option_os_tag);
if (os_tag < 100 || os_tag > 255) { os_tag = 100; }
if (os_tag < 100 || os_tag > 255) { os_tag = 254; }
return VM_MAKE_TAG(os_tag);
#else
return -1;