- added git fixes for xen and binutils 2.41+

[packages/kexec-tools.git] / kexec-tools-git.patch

From 94fbe64fb22d61726ca0c0996987574b6c783c19 Mon Sep 17 00:00:00 2001
From: Jiri Bohac <jbohac@suse.cz>
Date: Tue, 16 Jan 2024 18:14:31 +0100
Subject: kexec: don't use kexec_file_load on XEN

Since commit 29fe5067ed07 ("kexec: make -a the default")
kexec tries the kexec_file_load syscall first and only falls back to kexec_load on
selected error codes.

This effectively breaks kexec on XEN, unless -c is pecified to force the kexec_load
syscall.

The XEN-specific functions (xen_kexec_load / xen_kexec_unload) are only called
from my_load / k_unload, i.e. the kexec_load code path.

With -p (panic kernel) kexec_file_load on XEN fails with -EADDRNOTAVAIL (crash
kernel reservation is ignored by the kernel on XEN), which is not in the list
of return codes that cause the fallback to kexec_file.

Without -p kexec_file_load actualy leads to a kernel oops on v6.4.0
(needs to be dubugged separately).

Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Fixes: 29fe5067ed07 ("kexec: make -a the default")
Signed-off-by: Simon Horman <horms@kernel.org>
---
 kexec/kexec.8 | 1 +
 kexec/kexec.c | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/kexec/kexec.8 b/kexec/kexec.8
index b969cea6..9e995fea 100644
--- a/kexec/kexec.8
+++ b/kexec/kexec.8
@@ -162,6 +162,7 @@ Specify that the new kernel is of this
 .TP
 .BI \-s\ (\-\-kexec-file-syscall)
 Specify that the new KEXEC_FILE_LOAD syscall should be used exclusively.
+Ignored on XEN.
 .TP
 .BI \-c\ (\-\-kexec-syscall)
 Specify that the old KEXEC_LOAD syscall should be used exclusively.
diff --git a/kexec/kexec.c b/kexec/kexec.c
index 08edfca2..9d0ec46e 100644
--- a/kexec/kexec.c
+++ b/kexec/kexec.c
@@ -1685,6 +1685,10 @@ int main(int argc, char *argv[])
 			}
 		}
 	}
+	if (xen_present()) {
+		do_kexec_file_syscall = 0;
+		do_kexec_fallback = 0;
+	}
 	if (do_kexec_file_syscall) {
 		if (do_load_jump_back_helper && !do_kexec_fallback)
 			die("--load-jump-back-helper not supported with kexec_file_load\n");
-- 
cgit 1.2.3-korg

From 328de8e00e298f00d7ba6b25dc3950147e9642e6 Mon Sep 17 00:00:00 2001
From: Michel Lind <salimma@fedoraproject.org>
Date: Tue, 30 Jan 2024 04:14:31 -0600
Subject: Fix building on x86_64 with binutils 2.41

Newer versions of the GNU assembler (observed with binutils 2.41) will
complain about the ".arch i386" in files assembled with "as --64",
with the message "Error: 64bit mode not supported on 'i386'".

Fix by moving ".arch i386" below the relevant ".code32" directive, so
that the assembler is no longer expecting 64-bit instructions to be used
by the time that the ".arch i386" directive is encountered.

Based on similar iPXE fix:
https://github.com/ipxe/ipxe/commit/6ca597eee

Signed-off-by: Michel Lind <michel@michel-slm.name>
Signed-off-by: Simon Horman <horms@kernel.org>
---
 purgatory/arch/i386/entry32-16-debug.S | 2 +-
 purgatory/arch/i386/entry32-16.S       | 2 +-
 purgatory/arch/i386/entry32.S          | 2 +-
 purgatory/arch/i386/setup-x86.S        | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/purgatory/arch/i386/entry32-16-debug.S b/purgatory/arch/i386/entry32-16-debug.S
index 5167944d..12e11649 100644
--- a/purgatory/arch/i386/entry32-16-debug.S
+++ b/purgatory/arch/i386/entry32-16-debug.S
@@ -25,10 +25,10 @@
 	.globl entry16_debug_pre32
 	.globl entry16_debug_first32
 	.globl entry16_debug_old_first32
-	.arch i386
 	.balign 16
 entry16_debug:
 	.code32
+	.arch i386
 	/* Compute where I am running at (assumes esp valid) */
 	call	1f
 1:	popl	%ebx
diff --git a/purgatory/arch/i386/entry32-16.S b/purgatory/arch/i386/entry32-16.S
index c051aab0..eace0958 100644
--- a/purgatory/arch/i386/entry32-16.S
+++ b/purgatory/arch/i386/entry32-16.S
@@ -20,10 +20,10 @@
 #undef i386	
 	.text
 	.globl entry16, entry16_regs
-	.arch i386
 	.balign 16
 entry16:
 	.code32
+	.arch i386
 	/* Compute where I am running at (assumes esp valid) */
 	call	1f
 1:	popl	%ebx
diff --git a/purgatory/arch/i386/entry32.S b/purgatory/arch/i386/entry32.S
index f7a494f1..8ce9e316 100644
--- a/purgatory/arch/i386/entry32.S
+++ b/purgatory/arch/i386/entry32.S
@@ -20,10 +20,10 @@
 #undef i386
 
 	.text
-	.arch	i386
 	.globl entry32, entry32_regs
 entry32:
 	.code32
+	.arch	i386
 
 	/* Setup a gdt that should that is generally usefully */
 	lgdt	%cs:gdt
diff --git a/purgatory/arch/i386/setup-x86.S b/purgatory/arch/i386/setup-x86.S
index 201bb2cb..a212eed4 100644
--- a/purgatory/arch/i386/setup-x86.S
+++ b/purgatory/arch/i386/setup-x86.S
@@ -21,10 +21,10 @@
 #undef i386
 
 	.text
-	.arch	i386
 	.globl purgatory_start
 purgatory_start:
 	.code32
+	.arch	i386
 
 	/* Load a gdt so I know what the segment registers are */
 	lgdt	%cs:gdt
-- 
cgit 1.2.3-korg