Commit a4e2e2ca authored by Hari Bathini's avatar Hari Bathini Committed by Michael Ellerman
Browse files

powerpc/fadump: handle invalidation of crashdump and re-registraion 



Make OPAL call to indicate that the dump is processed and the metadata
area in OPAL can be cleared/released. Also, setup/initialize FADump
for re-registration.

Signed-off-by: default avatarHari Bathini <hbathini@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/156821356046.5656.12270927048195494911.stgit@hbathini.in.ibm.com
parent 6071e8f9

arch/powerpc/kernel/fadump.c

+7 −1
Original line number Diff line number Diff line
@@ -1063,7 +1063,13 @@ static void fadump_invalidate_release_mem(void) 
	fadump_release_memory(fw_dump.boot_memory_size, memblock_end_of_DRAM());

	fadump_free_cpu_notes_buf();



	/* Initialize the kernel dump memory structure for FAD registration. */

	/*

	 * Setup kernel metadata and initialize the kernel dump

	 * memory structure for FADump re-registration.

	 */

	if (fw_dump.ops->fadump_setup_metadata &&

	    (fw_dump.ops->fadump_setup_metadata(&fw_dump) < 0))

		pr_warn("Failed to setup kernel metadata!\n");

	fw_dump.ops->fadump_init_mem_struct(&fw_dump);

}

arch/powerpc/platforms/powernv/opal-fadump.c

+11 −1
Original line number Diff line number Diff line
@@ -254,9 +254,19 @@ static int opal_fadump_unregister(struct fw_dump *fadump_conf) 


static int opal_fadump_invalidate(struct fw_dump *fadump_conf)

{

	s64 rc;



	rc = opal_mpipl_update(OPAL_MPIPL_FREE_PRESERVED_MEMORY, 0, 0, 0);

	if (rc) {

		pr_err("Failed to invalidate - unexpected Error(%lld).\n", rc);

		return -EIO;

	}



	fadump_conf->dump_active = 0;

	opal_fdm_active = NULL;

	return 0;

}



static void opal_fadump_cleanup(struct fw_dump *fadump_conf)

{

	s64 ret;