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5912838326
grub2/0001-linux-fix-efi_relocate_kernel-failure.patch
Michael Chang 5912838326 Accepting request 1006353 from home:michael-chang:branches:Base:System 
- Add patch to fix kernel relocation error in low memory
  * 0001-linux-fix-efi_relocate_kernel-failure.patch

OBS-URL: https://build.opensuse.org/request/show/1006353
OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=420
2022-09-28 02:40:56 +00:00

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From 80487d82ee1c179c01fad1a23f26fcca79c0ace5 Mon Sep 17 00:00:00 2001
From: Michael Chang <mchang@suse.com>
Date: Mon, 26 Sep 2022 12:04:41 +0800
Subject: [PATCH] linux: fix efi_relocate_kernel failure
With the dynamic allocated heap in new memory manager, it could use up all
usable memory with no reservation on subsequent kernel loading leading to
following error:
EFI stub: ERROR: Failed to allocate usable memory for kernel
EFI stub: ERROR: efi_relocate_kernel() failed!
EFI stub: ERROR: efi_main failed!
The patch tries to returning the memory pages allocated by grub to the firmware
before handing over to linux kernel. This could eliminate the worry that we
have no limited amount of memory exclusively set for grub to guarentee the
memory requirement for booting subsequent component can be met.
Signed-off-by: Michael Chang <mchang@suse.com>
---
grub-core/Makefile.am | 7 +++++++
grub-core/Makefile.core.def | 2 +-
grub-core/loader/efi/linux.c | 16 ++++++++++++++++
grub-core/loader/i386/efi/linux.c | 13 ++++++++++---
4 files changed, 34 insertions(+), 4 deletions(-)
diff --git a/grub-core/Makefile.am b/grub-core/Makefile.am
index dc07ba6f8..3b1f101fd 100644
--- a/grub-core/Makefile.am
+++ b/grub-core/Makefile.am
@@ -124,6 +124,7 @@ if COND_i386_efi
KERNEL_HEADER_FILES += $(top_builddir)/include/grub/machine/kernel.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/efi.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/disk.h
+KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/linux.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/tsc.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/pci.h
@@ -185,6 +186,7 @@ if COND_x86_64_efi
KERNEL_HEADER_FILES += $(top_builddir)/include/grub/machine/kernel.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/efi.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/disk.h
+KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/linux.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/tsc.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/pci.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h
@@ -194,6 +196,7 @@ endif
if COND_ia64_efi
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/efi.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/disk.h
+KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/linux.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h
endif
@@ -281,6 +284,7 @@ endif
if COND_arm_efi
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/efi.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/disk.h
+KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/linux.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/arm/system.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h
endif
@@ -288,18 +292,21 @@ endif
if COND_arm64_efi
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/efi.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/disk.h
+KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/linux.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h
endif
if COND_riscv32_efi
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/efi.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/disk.h
+KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/linux.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h
endif
if COND_riscv64_efi
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/efi.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/disk.h
+KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/linux.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h
endif
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index 211d2166b..a8c5684dd 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -392,6 +392,7 @@ kernel = {
extra_dist = kern/i386/realmode.S;
extra_dist = boot/i386/pc/lzma_decode.S;
extra_dist = kern/mips/cache_flush.S;
+ efi = loader/efi/linux.c;
};
program = {
@@ -1855,7 +1856,6 @@ module = {
riscv64 = loader/riscv/linux.c;
emu = loader/emu/linux.c;
common = loader/linux.c;
- efi = loader/efi/linux.c;
};
module = {
diff --git a/grub-core/loader/efi/linux.c b/grub-core/loader/efi/linux.c
index 9265cf420..6ee0ca966 100644
--- a/grub-core/loader/efi/linux.c
+++ b/grub-core/loader/efi/linux.c
@@ -23,6 +23,8 @@
#include <grub/efi/efi.h>
#include <grub/efi/pe32.h>
#include <grub/efi/linux.h>
+#include <grub/kernel.h>
+#include <grub/loader.h>
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-align"
@@ -38,6 +40,8 @@ grub_efi_linux_boot (void *kernel_addr, grub_off_t handover_offset,
int offset = 0;
#ifdef __x86_64__
+ grub_efi_simple_text_output_interface_t *o;
+ o = grub_efi_system_table->con_out;
offset = 512;
#endif
@@ -55,9 +59,21 @@ grub_efi_linux_boot (void *kernel_addr, grub_off_t handover_offset,
grub_dprintf ("linux", "kernel_addr: %p handover_offset: %p params: %p\n",
kernel_addr, (void *)(grub_efi_uintn_t)handover_offset, kernel_params);
hf = (handover_func)((char *)kernel_addr + handover_offset + offset);
+#ifdef __x86_64__
+ grub_machine_fini (GRUB_LOADER_FLAG_NORETURN);
+#endif
hf (grub_efi_image_handle, grub_efi_system_table, kernel_params);
+#ifdef __x86_64__
+ efi_call_2 (o->output_string, o, L"cannot boot linux kernel via efi handover\r\n"
+ L"rebooting in 5 seconds... *\r\n");
+ efi_call_1 (grub_efi_system_table->boot_services->stall, 5000000);
+ efi_call_4 (grub_efi_system_table->runtime_services->reset_system,
+ GRUB_EFI_RESET_COLD, GRUB_EFI_SUCCESS, 0, NULL);
+ for (;;) ;
+#else
return GRUB_ERR_BUG;
+#endif
}
#pragma GCC diagnostic pop
diff --git a/grub-core/loader/i386/efi/linux.c b/grub-core/loader/i386/efi/linux.c
index 6b06a8f2f..b9b0d4a5f 100644
--- a/grub-core/loader/i386/efi/linux.c
+++ b/grub-core/loader/i386/efi/linux.c
@@ -90,6 +90,8 @@ kernel_alloc(grub_efi_uintn_t size, const char * const errmsg)
{
grub_uint64_t max = max_addresses[i].addr;
grub_efi_uintn_t pages;
+ grub_efi_status_t status;
+ grub_efi_boot_services_t *b;
/*
* When we're *not* loading the kernel, or >4GB allocations aren't
@@ -104,9 +106,14 @@ kernel_alloc(grub_efi_uintn_t size, const char * const errmsg)
pages, (void *)(grub_addr_t)max);
prev_max = max;
- addr = grub_efi_allocate_pages_real (max, pages,
- max_addresses[i].alloc_type,
- GRUB_EFI_LOADER_DATA);
+ b = grub_efi_system_table->boot_services;
+ status = efi_call_4 (b->allocate_pages, max_addresses[i].alloc_type, GRUB_EFI_LOADER_DATA, pages, &max);
+ if (status != GRUB_EFI_SUCCESS)
+ {
+ grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
+ max = 0;
+ }
+ addr = (void *) ((grub_addr_t) max);
if (addr)
grub_dprintf ("linux", "Allocated at %p\n", addr);
}
--
2.37.3
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