arm64: Reword a comment about kexec / kboot path

Sponsored by:		Netflix
Reviewed by:		kevans, andrew,	jhibbits
Differential Revision:	https://reviews.freebsd.org/D49860

This commit is contained in:

Warner Losh

2025-04-16 22:04:03 -06:00

parent d27413a7d7

commit 03bca3cfb4

1 changed files with 6 additions and 4 deletions

									
										sys/arm64/arm64/machdep.c
									
		+6
		-4
	
												View File
												
				@@ -502,10 +502,12 @@ efi_early_map(vm_offset_t va)

				/*

				 * When booted via kboot, the prior kernel will pass in reserved memory areas in

				 * a EFI config table. We need to find that table and walk through it excluding

				 * the memory ranges in it. btw, this is called too early for the printf to do

				 * anything since msgbufp isn't initialized, let alone a console...

				 * When booted via kexec from Linux, the prior kernel will pass in reserved

				 * memory areas in an EFI config table. We need to find that table and walk

				 * through it excluding the memory ranges in it. btw, this is called too early

				 * for the printf to do anything (unless EARLY_PRINTF is defined) since msgbufp

				 * isn't initialized, let alone a console, but breakpoints in printf help

				 * diagnose rare failures.

				 */

				static void

				exclude_efi_memreserve(vm_paddr_t efi_systbl_phys)