From a4e2e2ca2f7bddf6d5d788033cc56f40af6e9c5a Mon Sep 17 00:00:00 2001 From: Hari Bathini Date: Wed, 11 Sep 2019 20:23:28 +0530 Subject: [PATCH] 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: Hari Bathini Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/156821356046.5656.12270927048195494911.stgit@hbathini.in.ibm.com --- arch/powerpc/kernel/fadump.c | 8 +++++++- arch/powerpc/platforms/powernv/opal-fadump.c | 12 +++++++++++- 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c index aab9b4d..852ac47 100644 --- a/arch/powerpc/kernel/fadump.c +++ b/arch/powerpc/kernel/fadump.c @@ -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); } diff --git a/arch/powerpc/platforms/powernv/opal-fadump.c b/arch/powerpc/platforms/powernv/opal-fadump.c index 533adae..ef6fb1f 100644 --- a/arch/powerpc/platforms/powernv/opal-fadump.c +++ b/arch/powerpc/platforms/powernv/opal-fadump.c @@ -254,7 +254,17 @@ static int opal_fadump_unregister(struct fw_dump *fadump_conf) static int opal_fadump_invalidate(struct fw_dump *fadump_conf) { - return -EIO; + 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) -- 2.7.4