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* [PATCH AUTOSEL 5.10 02/41] EDAC/ti: Add missing MODULE_DEVICE_TABLE
       [not found] <20210705153001.1521447-1-sashal@kernel.org>
@ 2021-07-05 15:29 ` Sasha Levin
  2021-07-05 15:29 ` [PATCH AUTOSEL 5.10 27/41] EDAC/Intel: Do not load EDAC driver when running as a guest Sasha Levin
  1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2021-07-05 15:29 UTC (permalink / raw)
  To: linux-kernel, stable
  Cc: Bixuan Cui, Hulk Robot, Borislav Petkov, Tero Kristo,
	Sasha Levin, linux-edac

From: Bixuan Cui <cuibixuan@huawei.com>

[ Upstream commit 0a37f32ba5272b2d4ec8c8d0f6b212b81b578f7e ]

The module misses MODULE_DEVICE_TABLE() for of_device_id tables and thus
never autoloads on ID matches.

Add the missing declaration.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Bixuan Cui <cuibixuan@huawei.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Tero Kristo <kristo@kernel.org>
Link: https://lkml.kernel.org/r/20210512033727.26701-1-cuibixuan@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/edac/ti_edac.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/edac/ti_edac.c b/drivers/edac/ti_edac.c
index e7eae20f83d1..169f96e51c29 100644
--- a/drivers/edac/ti_edac.c
+++ b/drivers/edac/ti_edac.c
@@ -197,6 +197,7 @@ static const struct of_device_id ti_edac_of_match[] = {
 	{ .compatible = "ti,emif-dra7xx", .data = (void *)EMIF_TYPE_DRA7 },
 	{},
 };
+MODULE_DEVICE_TABLE(of, ti_edac_of_match);
 
 static int _emif_get_id(struct device_node *node)
 {
-- 
2.30.2


^ permalink raw reply	[flat|nested] 2+ messages in thread

* [PATCH AUTOSEL 5.10 27/41] EDAC/Intel: Do not load EDAC driver when running as a guest
       [not found] <20210705153001.1521447-1-sashal@kernel.org>
  2021-07-05 15:29 ` [PATCH AUTOSEL 5.10 02/41] EDAC/ti: Add missing MODULE_DEVICE_TABLE Sasha Levin
@ 2021-07-05 15:29 ` Sasha Levin
  1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2021-07-05 15:29 UTC (permalink / raw)
  To: linux-kernel, stable; +Cc: Luck, Tony, Borislav Petkov, Sasha Levin, linux-edac

From: "Luck, Tony" <tony.luck@intel.com>

[ Upstream commit f0a029fff4a50eb01648810a77ba1873e829fdd4 ]

There's little to no point in loading an EDAC driver running in a guest:
1) The CPU model reported by CPUID may not represent actual h/w
2) The hypervisor likely does not pass in access to memory controller devices
3) Hypervisors generally do not pass corrected error details to guests

Add a check in each of the Intel EDAC drivers for X86_FEATURE_HYPERVISOR
and simply return -ENODEV in the init routine.

Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20210615174419.GA1087688@agluck-desk2.amr.corp.intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/edac/i10nm_base.c | 3 +++
 drivers/edac/pnd2_edac.c  | 3 +++
 drivers/edac/sb_edac.c    | 3 +++
 drivers/edac/skx_base.c   | 3 +++
 4 files changed, 12 insertions(+)

diff --git a/drivers/edac/i10nm_base.c b/drivers/edac/i10nm_base.c
index 7b52691c45d2..4912a7b88380 100644
--- a/drivers/edac/i10nm_base.c
+++ b/drivers/edac/i10nm_base.c
@@ -263,6 +263,9 @@ static int __init i10nm_init(void)
 	if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR)))
 		return -EBUSY;
 
+	if (cpu_feature_enabled(X86_FEATURE_HYPERVISOR))
+		return -ENODEV;
+
 	id = x86_match_cpu(i10nm_cpuids);
 	if (!id)
 		return -ENODEV;
diff --git a/drivers/edac/pnd2_edac.c b/drivers/edac/pnd2_edac.c
index 928f63a374c7..c94ca1f790c4 100644
--- a/drivers/edac/pnd2_edac.c
+++ b/drivers/edac/pnd2_edac.c
@@ -1554,6 +1554,9 @@ static int __init pnd2_init(void)
 	if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR)))
 		return -EBUSY;
 
+	if (cpu_feature_enabled(X86_FEATURE_HYPERVISOR))
+		return -ENODEV;
+
 	id = x86_match_cpu(pnd2_cpuids);
 	if (!id)
 		return -ENODEV;
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 93daa4297f2e..4c626fcd4dcb 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -3510,6 +3510,9 @@ static int __init sbridge_init(void)
 	if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR)))
 		return -EBUSY;
 
+	if (cpu_feature_enabled(X86_FEATURE_HYPERVISOR))
+		return -ENODEV;
+
 	id = x86_match_cpu(sbridge_cpuids);
 	if (!id)
 		return -ENODEV;
diff --git a/drivers/edac/skx_base.c b/drivers/edac/skx_base.c
index 2c7db95df326..f887e3166651 100644
--- a/drivers/edac/skx_base.c
+++ b/drivers/edac/skx_base.c
@@ -656,6 +656,9 @@ static int __init skx_init(void)
 	if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR)))
 		return -EBUSY;
 
+	if (cpu_feature_enabled(X86_FEATURE_HYPERVISOR))
+		return -ENODEV;
+
 	id = x86_match_cpu(skx_cpuids);
 	if (!id)
 		return -ENODEV;
-- 
2.30.2


^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2021-07-05 15:31 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
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     [not found] <20210705153001.1521447-1-sashal@kernel.org>
2021-07-05 15:29 ` [PATCH AUTOSEL 5.10 02/41] EDAC/ti: Add missing MODULE_DEVICE_TABLE Sasha Levin
2021-07-05 15:29 ` [PATCH AUTOSEL 5.10 27/41] EDAC/Intel: Do not load EDAC driver when running as a guest Sasha Levin

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