Eric W. Biederman wrote:
Amerigo Wang <amwang@xxxxxxxxxx> writes:This patch implements showing kexec memory area via /proc/iomem. For example, with this patch we can see: # cat /proc/iomem ... 00100000-7ffeffff : System RAM 01000000-012e1424 : Kernel code 012e1425-015f1aff : Kernel data 0166b000-01b4b88f : Kernel bss 02000000-083fffff : Crash kernel 02000000-028fffff : Used 02900000-083fffff : Unused ... So that user can know how much memory the kernel uses for crash kernel.Nacked-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx> We can inspect the image we are going to load to get this information. In fact /sbin/kexec already inspects the image we are going to load to get this information. Putting this in the kernel adds kernel complexity for no gain.
/sbin/kexec is supported to know this, of course. But this is not for /sbin/kexec, this is for user (or other programs) to observe the memory information, so that he can know the memory he reserved is too much or not.
Without this, it is a little hard to use patch 2/2. -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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