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x86/mce/inject: Add IPID for injection too

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Add an injection file in order to specify the IPID too when injecting
an error. One use case example is using the machinery to decode MCEs
collected from other machines.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210314201806.12798-1-bp@alien8.de
This commit is contained in:
Borislav Petkov 2021-03-13 17:13:29 +01:00
parent 0d02ec6b31
commit 2ffdc2c344
1 changed files with 6 additions and 0 deletions
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6
arch/x86/kernel/cpu/mce/inject.c
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@ -74,6 +74,7 @@ MCE_INJECT_SET(status);
MCE_INJECT_SET(misc);
MCE_INJECT_SET(addr);
MCE_INJECT_SET(synd);
MCE_INJECT_SET(ipid);
#define MCE_INJECT_GET(reg) \
static int inj_##reg##_get(void *data, u64 *val) \
@ -88,11 +89,13 @@ MCE_INJECT_GET(status);
MCE_INJECT_GET(misc);
MCE_INJECT_GET(addr);
MCE_INJECT_GET(synd);
MCE_INJECT_GET(ipid);
DEFINE_SIMPLE_ATTRIBUTE(status_fops, inj_status_get, inj_status_set, "%llx\n");
DEFINE_SIMPLE_ATTRIBUTE(misc_fops, inj_misc_get, inj_misc_set, "%llx\n");
DEFINE_SIMPLE_ATTRIBUTE(addr_fops, inj_addr_get, inj_addr_set, "%llx\n");
DEFINE_SIMPLE_ATTRIBUTE(synd_fops, inj_synd_get, inj_synd_set, "%llx\n");
DEFINE_SIMPLE_ATTRIBUTE(ipid_fops, inj_ipid_get, inj_ipid_set, "%llx\n");
static void setup_inj_struct(struct mce *m)
{
@ -629,6 +632,8 @@ static const char readme_msg[] =
"\t is present in hardware. \n"
"\t - \"th\": Trigger APIC interrupt for Threshold errors. Causes threshold \n"
"\t APIC interrupt handler to handle the error. \n"
"\n"
"ipid:\t IPID (AMD-specific)\n"
"\n";
static ssize_t
@ -652,6 +657,7 @@ static struct dfs_node {
{ .name = "misc", .fops = &misc_fops, .perm = S_IRUSR | S_IWUSR },
{ .name = "addr", .fops = &addr_fops, .perm = S_IRUSR | S_IWUSR },
{ .name = "synd", .fops = &synd_fops, .perm = S_IRUSR | S_IWUSR },
{ .name = "ipid", .fops = &ipid_fops, .perm = S_IRUSR | S_IWUSR },
{ .name = "bank", .fops = &bank_fops, .perm = S_IRUSR | S_IWUSR },
{ .name = "flags", .fops = &flags_fops, .perm = S_IRUSR | S_IWUSR },
{ .name = "cpu", .fops = &extcpu_fops, .perm = S_IRUSR | S_IWUSR },