svn commit: r357546 - head/sys/vm

[Ryan Libby]

Author: rlibby
Date: Tue Feb  4 22:39:58 2020
New Revision: 357546
URL: https://svnweb.freebsd.org/changeset/base/357546

Log:
  uma: pcpu_page_free needs to startup_free pages from startup_alloc
  
  After r357392, it is apparent that we do have some early-boot PCPU
  zones.  Make it so we can safely free pages from them if they are
  actually used during early boot.
  
  Reviewed by:	jeff, markj
  Sponsored by:	Dell EMC Isilon
  Differential Revision:	https://reviews.freebsd.org/D23496

Modified:
  head/sys/vm/uma_core.c

Modified: head/sys/vm/uma_core.c
==============================================================================
--- head/sys/vm/uma_core.c	Tue Feb  4 21:43:39 2020	(r357545)
+++ head/sys/vm/uma_core.c	Tue Feb  4 22:39:58 2020	(r357546)
@@ -1704,6 +1704,12 @@ pcpu_page_free(void *mem, vm_size_t size, uint8_t flag
 	vm_page_t m;
 
 	MPASS(size == (mp_maxid+1)*PAGE_SIZE);
+
+	if ((flags & UMA_SLAB_BOOT) != 0) {
+		startup_free(mem, size);
+		return;
+	}
+
 	sva = (vm_offset_t)mem;
 	for (curva = sva; curva < sva + size; curva += PAGE_SIZE) {
 		paddr = pmap_kextract(curva);