admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

x86/mce/amd: Define threshold restart function for banks

Browse Source 
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
This commit is contained in:
Yazen Ghannam
2025-11-04 14:55:43 +00:00
committed by Borislav Petkov (AMD)
parent 3206b41604
commit 56f17be67a
1 changed files with 19 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
arch/x86/kernel/cpu/mce/amd.c
View File

@@ -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);
}
/*