From: Borislav Petkov <bp@alien8.de>
To: Yazen Ghannam <Yazen.Ghannam@amd.com>
Cc: X86 ML <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH] x86/mce/inject: Add IPID for injection too
Date: Sun, 14 Mar 2021 21:18:06 +0100 [thread overview]
Message-ID: <20210314201806.12798-1-bp@alien8.de> (raw)
From: Borislav Petkov <bp@suse.de>
Add an injection file in order to specify IPID too when injecting an
error, for example, for using the machinery to decode MCEs from other
machines.
Signed-off-by: Borislav Petkov <bp@suse.de>
---
arch/x86/kernel/cpu/mce/inject.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/x86/kernel/cpu/mce/inject.c b/arch/x86/kernel/cpu/mce/inject.c
index 7b360731fc2d..4e86d97f9653 100644
--- a/arch/x86/kernel/cpu/mce/inject.c
+++ b/arch/x86/kernel/cpu/mce/inject.c
@@ -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 },
--
2.29.2
next reply other threads:[~2021-03-14 20:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-14 20:18 Borislav Petkov [this message]
2021-03-23 23:16 ` [tip: ras/core] x86/mce/inject: Add IPID for injection too tip-bot2 for Borislav Petkov
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