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Re: [MINI-OS PATCH 11/12] kexec: add kexec callback functionality
- To: Jason Andryuk <jandryuk@xxxxxxxxx>
- From: Jürgen Groß <jgross@xxxxxxxx>
- Date: Mon, 16 Jun 2025 09:08:43 +0200
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- Cc: minios-devel@xxxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, samuel.thibault@xxxxxxxxxxxx
- Delivery-date: Mon, 16 Jun 2025 07:08:49 +0000
- List-id: Mini-os development list <minios-devel.lists.xenproject.org>
On 14.06.25 19:34, Jason Andryuk wrote:
On Fri, Mar 21, 2025 at 5:32 AM Juergen Gross <jgross@xxxxxxxx> wrote:
Add a kexec_call() macro which will provide the capability to register
a function for being called when doing a kexec() call. The called
functions will be called with a boolean parameter "undo" indicating
whether a previous call needs to be undone due to a failure during
kexec().
The related loop to call all callbacks is added to kexec().
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
diff --git a/arch/x86/mm.c b/arch/x86/mm.c
index f4419d95..26ede6f4 100644
--- a/arch/x86/mm.c
+++ b/arch/x86/mm.c
@@ -529,7 +529,8 @@ void change_readonly(bool readonly)
#endif
}
- printk("setting %p-%p readonly\n", &_text, &_erodata);
+ printk("setting %p-%p %s\n", &_text, &_erodata,
+ readonly ? "readonly" : "writable");
Oh, I think this belongs in the earlier change.
Indeed.
With that moved, this one (and the earlier one still)
Code wise:
Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
But this kexec_call() macro isn't actually used? xenstore needs this
to prepare for kexec?
This will be needed to e.g. handle FD_CLOEXEC.
Juergen
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