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| author | Helge Deller <deller@gmx.de> | 2017-05-11 22:24:15 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2017-05-12 09:14:15 +0200 |
| commit | c9c2877d08d9aa0ca0a5c227ac795fbb76269300 (patch) | |
| tree | bb8c33d2619840e10d29c4e5caed49e8267bf4ba /arch/parisc/mm | |
| parent | c8c3735997a3aa184fa81742bb6c4062a26af2f3 (diff) | |
| download | linux-c9c2877d08d9aa0ca0a5c227ac795fbb76269300.tar.bz2 | |
parisc: Add Page Deallocation Table (PDT) support
The firmare in most parisc machines maintains a Page Deallocation Table (PDT)
which holds a list of physical memory addresses where hardware detected memory
errors (single bit and double bit errors).
This patch adds the missing PDC firmware calls and the logic to read the PDT
from firmware, report all current PDT entries and exclude the reported bad
memory from being used by Linux.
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/mm')
| -rw-r--r-- | arch/parisc/mm/init.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c index 66f3a6345105..1ca9a2b4239f 100644 --- a/arch/parisc/mm/init.c +++ b/arch/parisc/mm/init.c @@ -381,6 +381,9 @@ static void __init setup_bootmem(void) request_resource(res, &data_resource); } request_resource(&sysram_resources[0], &pdcdata_resource); + + /* Initialize Page Deallocation Table (PDT) and check for bad memory. */ + pdc_pdt_init(); } static int __init parisc_text_address(unsigned long vaddr) |