diff options
| author | Yazen Ghannam <yazen.ghannam@amd.com> | 2025-11-04 14:55:43 +0000 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-11-05 22:38:31 +0100 |
| commit | 56f17be67a332d146821d1a812ab16388d07ace7 (patch) | |
| tree | 1cdb1c2e6b7e16694b4ce87ba7b9fa42b0b4f8c2 | |
| parent | 3206b41604f80bb84c19ae3ed7c01d9d671ece2a (diff) | |
x86/mce/amd: Define threshold restart function for banks
Prepare for CMCI storm support by moving the common bank/block iterator code
to a helper function.
Include a parameter to switch the interrupt enable. This will be used by the
CMCI storm handling function.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Link: https://lore.kernel.org/20251104-wip-mca-updates-v8-0-66c8eacf67b9@amd.com
| -rw-r--r-- | arch/x86/kernel/cpu/mce/amd.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c index af2221bcba96..940d1a033569 100644 --- a/arch/x86/kernel/cpu/mce/amd.c +++ b/arch/x86/kernel/cpu/mce/amd.c @@ -471,6 +471,24 @@ static void threshold_restart_block(void *_tr) wrmsr(tr->b->address, lo, hi); } +static void threshold_restart_bank(unsigned int bank, bool intr_en) +{ + struct threshold_bank **thr_banks = this_cpu_read(threshold_banks); + struct threshold_block *block, *tmp; + struct thresh_restart tr; + + if (!thr_banks || !thr_banks[bank]) + return; + + memset(&tr, 0, sizeof(tr)); + + list_for_each_entry_safe(block, tmp, &thr_banks[bank]->miscj, miscj) { + tr.b = block; + tr.b->interrupt_enable = intr_en; + threshold_restart_block(&tr); + } +} + static void mce_threshold_block_init(struct threshold_block *b, int offset) { struct thresh_restart tr = { @@ -814,24 +832,7 @@ static void amd_deferred_error_interrupt(void) static void amd_reset_thr_limit(unsigned int bank) { - struct threshold_bank **bp = this_cpu_read(threshold_banks); - struct threshold_block *block, *tmp; - struct thresh_restart tr; - - /* - * Validate that the threshold bank has been initialized already. The - * handler is installed at boot time, but on a hotplug event the - * interrupt might fire before the data has been initialized. - */ - if (!bp || !bp[bank]) - return; - - memset(&tr, 0, sizeof(tr)); - - list_for_each_entry_safe(block, tmp, &bp[bank]->miscj, miscj) { - tr.b = block; - threshold_restart_block(&tr); - } + threshold_restart_bank(bank, true); } /* |