From 3a396c409a39ce701533f3f55f3db0ab700aaeae Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Mon, 4 Mar 2024 12:19:55 +0100 Subject: [PATCH] x86/boot: efistub: Assign global boot_params variable From: Ard Biesheuvel [ Commit 50dcc2e0d62e3c4a54f39673c4dc3dcde7c74d52 upstream ] Now that the x86 EFI stub calls into some APIs exposed by the decompressor (e.g., kaslr_get_random_long()), it is necessary to ensure that the global boot_params variable is set correctly before doing so. Signed-off-by: Ard Biesheuvel Signed-off-by: Ingo Molnar Signed-off-by: Ard Biesheuvel Signed-off-by: Greg Kroah-Hartman --- drivers/firmware/efi/libstub/x86-stub.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c index c1dcc86fcc3d..b183b40195ee 100644 --- a/drivers/firmware/efi/libstub/x86-stub.c +++ b/drivers/firmware/efi/libstub/x86-stub.c @@ -827,6 +827,8 @@ void __noreturn efi_stub_entry(efi_handle_t handle, unsigned long kernel_entry; efi_status_t status; + boot_params_ptr = boot_params; + efi_system_table = sys_table_arg; /* Check if we were booted by the EFI firmware */ if (efi_system_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)