Commit e268689a authored by Pasha Tatashin's avatar Pasha Tatashin Committed by Andrew Morton
Browse files

kho: always expose output FDT in debugfs 

Currently, the output FDT is added to debugfs only when KHO is finalized
and removed when aborted.

There is no need to hide the FDT based on the state.  Always expose it
starting from initialization.  This aids the transition toward removing
the explicit abort functionality and converting KHO to be fully stateless.

Link: https://lkml.kernel.org/r/20251114190002.3311679-7-pasha.tatashin@soleen.com


Signed-off-by: default avatarPasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: default avatarMike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: default avatarPratyush Yadav <pratyush@kernel.org>
Cc: Alexander Graf <graf@amazon.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Baoquan He <bhe@redhat.com>
Cc: Coiby Xu <coxu@redhat.com>
Cc: Dave Vasilevsky <dave@vasilevsky.ca>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Kees Cook <kees@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 53f8f064

kernel/liveupdate/kexec_handover.c

+3 −5
Original line number Diff line number Diff line
@@ -1234,8 +1234,6 @@ int kho_abort(void) 
	__kho_abort();

	kho_out.finalized = false;



	kho_debugfs_fdt_remove(&kho_out.dbg, kho_out.fdt);



	return 0;

}
@@ -1306,9 +1304,6 @@ int kho_finalize(void) 


	kho_out.finalized = true;



	WARN_ON_ONCE(kho_debugfs_fdt_add(&kho_out.dbg, "fdt",

					 kho_out.fdt, true));



	return 0;

}
@@ -1425,6 +1420,9 @@ static __init int kho_init(void) 
			init_cma_reserved_pageblock(pfn_to_page(pfn));

	}



	WARN_ON_ONCE(kho_debugfs_fdt_add(&kho_out.dbg, "fdt",

					 kho_out.fdt, true));



	return 0;



err_free_fdt: