diff options
| author | Mike Rapoport (Microsoft) <rppt@kernel.org> | 2026-03-23 09:48:30 +0200 |
|---|---|---|
| committer | Mike Rapoport (Microsoft) <rppt@kernel.org> | 2026-04-01 11:19:45 +0300 |
| commit | 8ff5d8f2008889bb6f46125d5a0638e8749e29bd (patch) | |
| tree | bdafff6bc84df90bab346699d0a5a8fd10126c7c | |
| parent | 25ee3aff9996f22e1b8b27fb284efb285e2fb025 (diff) | |
powerpc: opal-core: pair alloc_pages_exact() with free_pages_exact()
opal-core allocates buffers with alloc_pages_exact(), but then
marks them as reserved and frees using free_reserved_area().
This is completely unnecessary and the pages allocated with
alloc_pages_exact() can be naturally freed with free_pages_exact().
Replace freeing of memory in opalcore_cleanup() with
free_pages_exact() and simplify allocation code so that it won't mark
allocated pages as reserved.
Link: https://patch.msgid.link/20260323074836.3653702-4-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-core.c | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-core.c b/arch/powerpc/platforms/powernv/opal-core.c index e76e462f55f6..32662d30d70f 100644 --- a/arch/powerpc/platforms/powernv/opal-core.c +++ b/arch/powerpc/platforms/powernv/opal-core.c @@ -303,7 +303,6 @@ static int __init create_opalcore(void) struct device_node *dn; struct opalcore *new; loff_t opalcore_off; - struct page *page; Elf64_Phdr *phdr; Elf64_Ehdr *elf; int i, ret; @@ -328,11 +327,6 @@ static int __init create_opalcore(void) oc_conf->opalcorebuf_sz = 0; return -ENOMEM; } - count = oc_conf->opalcorebuf_sz / PAGE_SIZE; - page = virt_to_page(oc_conf->opalcorebuf); - for (i = 0; i < count; i++) - mark_page_reserved(page + i); - pr_debug("opalcorebuf = 0x%llx\n", (u64)oc_conf->opalcorebuf); /* Read OPAL related device-tree entries */ @@ -437,10 +431,7 @@ static void opalcore_cleanup(void) /* free the buffer used for setting up OPAL core */ if (oc_conf->opalcorebuf) { - void *end = (void *)((u64)oc_conf->opalcorebuf + - oc_conf->opalcorebuf_sz); - - free_reserved_area(oc_conf->opalcorebuf, end, -1, NULL); + free_pages_exact(oc_conf->opalcorebuf, oc_conf->opalcorebuf_sz); oc_conf->opalcorebuf = NULL; oc_conf->opalcorebuf_sz = 0; } |