arm64/linux: Allocate memory for kernel with EFI_LOADER_CODE type

Resolves: #RHEL-49868
Signed-off-by: Nicolas Frayer <nfrayer@redhat.com>

0351-arm64-Use-proper-memory-type-for-kernel-allocation.patch

@@ -0,0 +1,44 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Maximilian Luz <luzmaximilian@gmail.com>
+Date: Tue, 28 Jun 2022 23:06:46 +0200
+Subject: [PATCH] arm64: Use proper memory type for kernel allocation
+
+Currently, the kernel pages are allocated with type EFI_LOADER_DATA.
+While the vast majority of systems will happily execute code from those
+pages (i.e. don't care about memory protection), the Microsoft Surface
+Pro X stalls, as this memory is not designated as "executable".
+
+Therefore, allocate the kernel pages as EFI_LOADER_CODE to request
+memory that is actually executable.
+
+Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
+---
+ grub-core/loader/arm64/linux.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/grub-core/loader/arm64/linux.c b/grub-core/loader/arm64/linux.c
+index 419f2201df8b..a3a193c255e9 100644
+--- a/grub-core/loader/arm64/linux.c
++++ b/grub-core/loader/arm64/linux.c
+@@ -26,7 +26,9 @@
+ #include <grub/mm.h>
+ #include <grub/types.h>
+ #include <grub/cpu/linux.h>
++#include <grub/efi/api.h>
+ #include <grub/efi/efi.h>
++#include <grub/cpu/efi/memory.h>
+ #include <grub/efi/fdtload.h>
+ #include <grub/efi/memory.h>
+ #include <grub/efi/linux.h>
+@@ -403,7 +405,10 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
+   grub_loader_unset();
+ 
+   kernel_alloc_pages = GRUB_EFI_BYTES_TO_PAGES (kernel_size + align - 1);
+-  kernel_alloc_addr = grub_efi_allocate_any_pages (kernel_alloc_pages);
++  kernel_alloc_addr = grub_efi_allocate_pages_real (GRUB_EFI_MAX_USABLE_ADDRESS,
++						    kernel_alloc_pages,
++						    GRUB_EFI_ALLOCATE_MAX_ADDRESS,
++						    GRUB_EFI_LOADER_CODE);
+   grub_dprintf ("linux", "kernel numpages: %d\n", kernel_alloc_pages);
+   if (!kernel_alloc_addr)
+     {

grub.patches

@@ -348,3 +348,4 @@ Patch0347: 0347-grub2-mkconfig-Ensure-grub-cfg-stub-is-not-overwritt.patch
 Patch0348: 0348-chainloader-remove-device-path-debug-message.patch
 Patch0349: 0349-grub2-mkconfig-Simplify-os_name-detection.patch
 Patch0350: 0350-grub-mkconfig-Remove-check-for-mount-point-for-grub-.patch
+Patch0351: 0351-arm64-Use-proper-memory-type-for-kernel-allocation.patch

grub2.spec

@@ -16,7 +16,7 @@
 Name:		grub2
 Epoch:		1
 Version:	2.06
-Release:	91%{?dist}
+Release:	92%{?dist}
 Summary:	Bootloader with support for Linux, Multiboot and more
 License:	GPLv3+
 URL:		http://www.gnu.org/software/grub/
@@ -547,6 +547,10 @@ mv ${EFI_HOME}/grub.cfg.stb ${EFI_HOME}/grub.cfg
 %endif
 
 %changelog
+* Tue Aug 13 2024 Nicolas Frayer <nfrayer@redhat.com> - 2.06-92
+- arm64/linux: Allocate memory for kernel with EFI_LOADER_CODE type
+- Resolves: #RHEL-49868
+
 * Fri Aug 2 2024 Leo Sandoval <lsandova@redhat.com> - 2.06-91
 - Set /boot/grub2/grub.cfg to 0600 mode if present
 - Resolves: #RHEL-45870