lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Fri, 16 Feb 2024 17:05:54 -0800
From: Stephen Boyd <sboyd@...nel.org>
To: Rob Herring <robh+dt@...nel.org>
Cc: linux-kernel@...r.kernel.org,
	patches@...ts.linux.dev,
	linux-um@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	kunit-dev@...glegroups.com,
	linux-kselftest@...r.kernel.org,
	devicetree@...r.kernel.org,
	Frank Rowand <frowand.list@...il.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Mark Rutland <mark.rutland@....com>
Subject: [PATCH v4 5/7] arm64: Unconditionally call unflatten_device_tree()

Call this function unconditionally so that we can populate an empty DTB
on platforms that don't boot with a firmware provided or builtin DTB.
When ACPI is in use, unflatten_device_tree() ignores the
'initial_boot_params' pointer so the live DT on those systems won't be
whatever that's pointing to. Similarly, when kexec copies the DT data
the previous kernel to the new one on ACPI systems,
of_kexec_alloc_and_setup_fdt() will ignore the live DT (the empty root
one) and copy the 'initial_boot_params' data.

Cc: Rob Herring <robh+dt@...nel.org>
Cc: Frank Rowand <frowand.list@...il.com>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: <linux-arm-kernel@...ts.infradead.org>
Signed-off-by: Stephen Boyd <sboyd@...nel.org>
---
 arch/arm64/kernel/setup.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 42c690bb2d60..0d210720d47d 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -351,8 +351,7 @@ void __init __no_sanitize_address setup_arch(char **cmdline_p)
 	/* Parse the ACPI tables for possible boot-time configuration */
 	acpi_boot_table_init();
 
-	if (acpi_disabled)
-		unflatten_device_tree();
+	unflatten_device_tree();
 
 	bootmem_init();
 
-- 
https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git/
https://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi.git


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ