git: 6f6213ec90e1 - main - Add comments for memory size

From: Warner Losh <imp_at_FreeBSD.org>
Date: Mon, 12 Jun 2023 14:57:53 UTC
The branch main has been updated by imp:

URL: https://cgit.FreeBSD.org/src/commit/?id=6f6213ec90e1b5c488cde38f86b4eef09c70c00c

commit 6f6213ec90e1b5c488cde38f86b4eef09c70c00c
Author:     VexedUXR <58701572+VexedUXR@users.noreply.github.com>
AuthorDate: 2023-06-12 14:57:02 +0000
Commit:     Warner Losh <imp@FreeBSD.org>
CommitDate: 2023-06-12 14:57:20 +0000

    Add comments for memory size
    
    Reviewed by: imp
    Pull Request: https://github.com/freebsd/freebsd-src/pull/753
---
 stand/efi/loader/arch/amd64/elf64_freebsd.c | 2 +-
 stand/kboot/arch/amd64/elf64_freebsd.c      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/stand/efi/loader/arch/amd64/elf64_freebsd.c b/stand/efi/loader/arch/amd64/elf64_freebsd.c
index 290d1c4696da..0ed9d2d78ffd 100644
--- a/stand/efi/loader/arch/amd64/elf64_freebsd.c
+++ b/stand/efi/loader/arch/amd64/elf64_freebsd.c
@@ -169,7 +169,7 @@ elf64_exec(struct preloaded_file *fp)
 	trampoline = (void *)trampcode;
 
 	if (copy_staging == COPY_STAGING_ENABLE) {
-		PT4 = (pml4_entry_t *)0x0000000040000000;
+		PT4 = (pml4_entry_t *)0x0000000040000000; /* 1G */
 		err = BS->AllocatePages(AllocateMaxAddress, EfiLoaderData, 3,
 		    (EFI_PHYSICAL_ADDRESS *)&PT4);
 		if (EFI_ERROR(err)) {
diff --git a/stand/kboot/arch/amd64/elf64_freebsd.c b/stand/kboot/arch/amd64/elf64_freebsd.c
index c3ed842a2abd..c25a22f504f8 100644
--- a/stand/kboot/arch/amd64/elf64_freebsd.c
+++ b/stand/kboot/arch/amd64/elf64_freebsd.c
@@ -238,7 +238,7 @@ elf64_exec(struct preloaded_file *fp)
 
 #ifdef EFI
 	if (copy_staging == COPY_STAGING_ENABLE) {
-		PT4 = (pml4_entry_t *)0x0000000040000000;
+		PT4 = (pml4_entry_t *)0x0000000040000000; /* 1G */
 		err = BS->AllocatePages(AllocateMaxAddress, EfiLoaderData, 3,
 		    (EFI_PHYSICAL_ADDRESS *)&PT4);
 		if (EFI_ERROR(err)) {