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kernel/debug: Only create an area for the debug syslog if reusing one.

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If the debug_output pointer is just a kernel_args_malloc'd structure,
then it is already mapped and we should not be re-mapping it; we only
need to do that if we are using a fixed-map ring.
This commit is contained in:
Augustin Cavalier 2021-09-17 16:06:13 -04:00
parent 4d1c59078b
commit a812e3cab1
1 changed files with 2 additions and 2 deletions
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4
src/system/kernel/debug/debug.cpp
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@ -1373,8 +1373,8 @@ syslog_init_post_vm(struct kernel_args* args)
status = B_NO_MEMORY;
goto err2;
}
} else if (args->debug_output != NULL) {
// create an area for the debug syslog buffer
} else if (args->keep_debug_output_buffer) {
// create an area for the already-existing debug syslog buffer
void* base = (void*)ROUNDDOWN((addr_t)(void *)args->debug_output, B_PAGE_SIZE);
size_t size = ROUNDUP(args->debug_size, B_PAGE_SIZE);
area_id area = create_area("syslog debug", &base, B_EXACT_ADDRESS, size,