[PATCH v3] kexec: implemented XEN KEXEC STATUS to determine if an image is loaded

[Daniel Kiper]

On Tue, Jan 24, 2017 at 04:47:09PM -0600, Eric DeVolder wrote:
> On 01/24/2017 01:16 PM, Daniel Kiper wrote:
> >On Tue, Jan 24, 2017 at 12:55:35PM -0600, Eric DeVolder wrote:

[...]

> >>diff --git a/kexec/kexec.c b/kexec/kexec.c
> >>index 500e5a9..defbbe3 100644
> >>--- a/kexec/kexec.c
> >>+++ b/kexec/kexec.c
> >>@@ -51,6 +51,9 @@
> >> #include "kexec-lzma.h"
> >> #include <arch/options.h>
> >>
> >>+#define KEXEC_LOADED_PATH "/sys/kernel/kexec_loaded"
> >>+#define KEXEC_CRASH_LOADED_PATH "/sys/kernel/kexec_crash_loaded"
> >>+
> >> unsigned long long mem_min = 0;
> >> unsigned long long mem_max = ULONG_MAX;
> >> static unsigned long kexec_flags = 0;
> >>@@ -58,6 +61,8 @@ static unsigned long kexec_flags = 0;
> >> static unsigned long kexec_file_flags = 0;
> >> int kexec_debug = 0;
> >>
> >>+static int kexec_loaded(const char *file);
> >>+
> >
> >Why are you shuffling this...
> >
> >> void dbgprint_mem_range(const char *prefix, struct memory_range *mr, int nr_mr)
> >> {
> >> 	int i;
> >>@@ -890,8 +895,6 @@ static int my_exec(void)
> >> 	return -1;
> >> }
> >>
> >>-static int kexec_loaded(void);
> >>-
> >
> >...and this. Could not you leave this forward declaration here (of
> >course with arg change)? Or is it possible to drop it at all?
>
> It is possible to relocate kexec_loaded() so that the forward
> declaration is not needed. I will do so.

Great!

Daniel