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Message-ID: <169762525684.3135.6443175198415541833.tip-bot2@tip-bot2>
Date: Wed, 18 Oct 2023 10:34:16 -0000
From: "tip-bot2 for Ard Biesheuvel" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Ard Biesheuvel <ardb@...nel.org>, Ingo Molnar <mingo@...nel.org>,
linux-kernel@...r.kernel.org, x86@...nel.org
Subject: [tip: x86/boot] x86/boot: efistub: Assign global boot_params variable
The following commit has been merged into the x86/boot branch of tip:
Commit-ID: 50dcc2e0d62e3c4a54f39673c4dc3dcde7c74d52
Gitweb: https://git.kernel.org/tip/50dcc2e0d62e3c4a54f39673c4dc3dcde7c74d52
Author: Ard Biesheuvel <ardb@...nel.org>
AuthorDate: Tue, 17 Oct 2023 15:25:13 +02:00
Committer: Ingo Molnar <mingo@...nel.org>
CommitterDate: Wed, 18 Oct 2023 12:03:04 +02:00
x86/boot: efistub: Assign global boot_params variable
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 <ardb@...nel.org>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Cc: linux-kernel@...r.kernel.org
---
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 3bfc596..76cc0d0 100644
--- a/drivers/firmware/efi/libstub/x86-stub.c
+++ b/drivers/firmware/efi/libstub/x86-stub.c
@@ -818,6 +818,8 @@ 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)
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