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Re: [MINI-OS PATCH 04/12] kexec: analyze new kernel for kexec
- To: Jason Andryuk <jandryuk@xxxxxxxxx>
- From: Jürgen Groß <jgross@xxxxxxxx>
- Date: Mon, 16 Jun 2025 08:42:31 +0200
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- Cc: minios-devel@xxxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, samuel.thibault@xxxxxxxxxxxx
- Delivery-date: Mon, 16 Jun 2025 06:51:07 +0000
- List-id: Mini-os development list <minios-devel.lists.xenproject.org>
On 14.06.25 18:41, Jason Andryuk wrote:
On Fri, Mar 21, 2025 at 5:25 AM Juergen Gross <jgross@xxxxxxxx> wrote:
Analyze the properties of the new kernel to be loaded by kexec. The
data needed is:
- upper boundary in final location
- copy and memory clear operations
- entry point and entry parameter
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
+
+static void check_notes_entry(elf_ehdr *ehdr, void *start, unsigned int len)
I think you should rename this to include read_ since it is necessary
to set kernel_entry. read_phys32_entry_note() or
read_note_kernel_entry() or some variation. To me, check_ implies a
boolean return without a side effect.
I'll go with read_note_entry().
@@ -54,9 +57,122 @@
* - The new kernel is activated.
*/
-int kexec(void *kernel, unsigned long kernel_size,
- const char *cmdline)
+int kexec(void *kernel, unsigned long kernel_size, const char *cmdline)
NIT: introduce kexec() with the single line form to avoid changing it
Everything else looks good, so preferably with the renaming:
Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
Thanks,
Juergen
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