* [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug
@ 2016-08-10 4:01 Rui Wang
2016-08-10 4:01 ` [PATCH v3 1/5] x86/ioapic: Change prototype of acpi_ioapic_add() Rui Wang
` (5 more replies)
0 siblings, 6 replies; 9+ messages in thread
From: Rui Wang @ 2016-08-10 4:01 UTC (permalink / raw)
To: helgaas, tglx, rjw
Cc: tony.luck, bhelgaas, linux-acpi, linux-pci, linux-kernel, rui.y.wang
A set of patches fixing bugs found while testing IOAPIC hotplug.
Regards,
Rui
Changelog:
Changes from v2 to v3:
* Rebased on top of 4.8-rc1 per Bjorn & Rafael.
* Improved the commit message of 0003, w/ clearer explanation.
Changes from v1 to v2:
* Split the first patch into two as advised by Bjorn: "would be nicer if
the interface change and header file munging were in a separate patch so
they wouldn't obscure the meat of the change, i.e., the addition of calls
to acpi_ioapic_add()."
* Removed acpi_ioapic_add() as an exported symbol.
* Fixed some typos, and s/acpi/ACPI/, s/ioapic/IOAPIC/ throughout.
* Fixed a warning from 0-day testing.
Rui Wang (5):
x86/ioapic: Change prototype of acpi_ioapic_add()
x86/ioapic: Support hot-removal of IOAPICs present during boot
x86/ioapic: Fix setup_res() failing to get resource
x86/ioapic: Fix lost IOAPIC resource after hot-removal and hotadd
x86/ioapic: Fix ioapic failing to request resource
drivers/acpi/internal.h | 2 --
drivers/acpi/ioapic.c | 46 ++++++++++++++++++++++++++--------------------
drivers/acpi/pci_root.c | 12 +++++++++++-
drivers/pci/setup-bus.c | 5 ++++-
include/linux/acpi.h | 6 ++++++
5 files changed, 47 insertions(+), 24 deletions(-)
--
1.8.3.1
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v3 1/5] x86/ioapic: Change prototype of acpi_ioapic_add()
2016-08-10 4:01 [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug Rui Wang
@ 2016-08-10 4:01 ` Rui Wang
2016-08-10 4:01 ` [PATCH v3 2/5] x86/ioapic: Support hot-removal of IOAPICs present during boot Rui Wang
` (4 subsequent siblings)
5 siblings, 0 replies; 9+ messages in thread
From: Rui Wang @ 2016-08-10 4:01 UTC (permalink / raw)
To: helgaas, tglx, rjw
Cc: tony.luck, bhelgaas, linux-acpi, linux-pci, linux-kernel, rui.y.wang
Change the argument of acpi_ioapic_add() to a generic ACPI handle, and
move its prototype from drivers/acpi/internal.h to include/linux/acpi.h
so that it can be called from outside the pci_root driver.
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
---
drivers/acpi/internal.h | 2 --
drivers/acpi/ioapic.c | 6 +++---
drivers/acpi/pci_root.c | 2 +-
include/linux/acpi.h | 6 ++++++
4 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 940218f..f26fc1d 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -40,10 +40,8 @@ int acpi_sysfs_init(void);
void acpi_container_init(void);
void acpi_memory_hotplug_init(void);
#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
-int acpi_ioapic_add(struct acpi_pci_root *root);
int acpi_ioapic_remove(struct acpi_pci_root *root);
#else
-static inline int acpi_ioapic_add(struct acpi_pci_root *root) { return 0; }
static inline int acpi_ioapic_remove(struct acpi_pci_root *root) { return 0; }
#endif
#ifdef CONFIG_ACPI_DOCK
diff --git a/drivers/acpi/ioapic.c b/drivers/acpi/ioapic.c
index ccdc8db..2449377 100644
--- a/drivers/acpi/ioapic.c
+++ b/drivers/acpi/ioapic.c
@@ -189,13 +189,13 @@ exit:
return AE_OK;
}
-int acpi_ioapic_add(struct acpi_pci_root *root)
+int acpi_ioapic_add(acpi_handle root_handle)
{
acpi_status status, retval = AE_OK;
- status = acpi_walk_namespace(ACPI_TYPE_DEVICE, root->device->handle,
+ status = acpi_walk_namespace(ACPI_TYPE_DEVICE, root_handle,
UINT_MAX, handle_ioapic_add, NULL,
- root->device->handle, (void **)&retval);
+ root_handle, (void **)&retval);
return ACPI_SUCCESS(status) && ACPI_SUCCESS(retval) ? 0 : -ENODEV;
}
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index d144168..b07eda1 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -614,7 +614,7 @@ static int acpi_pci_root_add(struct acpi_device *device,
if (hotadd) {
pcibios_resource_survey_bus(root->bus);
pci_assign_unassigned_root_bus_resources(root->bus);
- acpi_ioapic_add(root);
+ acpi_ioapic_add(root->device->handle);
}
pci_lock_rescan_remove();
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 4d8452c..c9a596b 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -751,6 +751,12 @@ static inline int acpi_reconfig_notifier_unregister(struct notifier_block *nb)
#endif /* !CONFIG_ACPI */
+#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
+int acpi_ioapic_add(acpi_handle root);
+#else
+static inline int acpi_ioapic_add(acpi_handle root) { return 0; }
+#endif
+
#ifdef CONFIG_ACPI
void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
u32 pm1a_ctrl, u32 pm1b_ctrl));
--
1.8.3.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v3 2/5] x86/ioapic: Support hot-removal of IOAPICs present during boot
2016-08-10 4:01 [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug Rui Wang
2016-08-10 4:01 ` [PATCH v3 1/5] x86/ioapic: Change prototype of acpi_ioapic_add() Rui Wang
@ 2016-08-10 4:01 ` Rui Wang
2016-08-17 0:33 ` Rafael J. Wysocki
2016-08-10 4:01 ` [PATCH v3 3/5] x86/ioapic: Fix setup_res() failing to get resource Rui Wang
` (3 subsequent siblings)
5 siblings, 1 reply; 9+ messages in thread
From: Rui Wang @ 2016-08-10 4:01 UTC (permalink / raw)
To: helgaas, tglx, rjw
Cc: tony.luck, bhelgaas, linux-acpi, linux-pci, linux-kernel, rui.y.wang
IOAPICs present during system boot aren't added to ioapic_list,
thus are unable to be hot-removed. Fix it by calling
acpi_ioapic_add() during root bus enumeration.
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
---
drivers/acpi/pci_root.c | 10 ++++++++++
drivers/pci/setup-bus.c | 5 ++++-
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index b07eda1..bf601d4 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -614,6 +614,16 @@ static int acpi_pci_root_add(struct acpi_device *device,
if (hotadd) {
pcibios_resource_survey_bus(root->bus);
pci_assign_unassigned_root_bus_resources(root->bus);
+ /*
+ * This is only called for the hotadd case. For the boot-time
+ * case, we need to wait until after PCI initialization in
+ * order to deal with IOAPICs mapped in on a PCI BAR.
+ *
+ * This is currently x86-specific, because acpi_ioapic_add()
+ * is an empty function without CONFIG_ACPI_HOTPLUG_IOAPIC.
+ * And CONFIG_ACPI_HOTPLUG_IOAPIC depends on CONFIG_X86_IO_APIC
+ * (see drivers/acpi/Kconfig).
+ */
acpi_ioapic_add(root->device->handle);
}
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index c74059e..ec538d3 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -25,6 +25,7 @@
#include <linux/ioport.h>
#include <linux/cache.h>
#include <linux/slab.h>
+#include <linux/acpi.h>
#include "pci.h"
unsigned int pci_flags;
@@ -1852,8 +1853,10 @@ void __init pci_assign_unassigned_resources(void)
{
struct pci_bus *root_bus;
- list_for_each_entry(root_bus, &pci_root_buses, node)
+ list_for_each_entry(root_bus, &pci_root_buses, node) {
pci_assign_unassigned_root_bus_resources(root_bus);
+ acpi_ioapic_add(ACPI_HANDLE(root_bus->bridge));
+ }
}
void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge)
--
1.8.3.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v3 3/5] x86/ioapic: Fix setup_res() failing to get resource
2016-08-10 4:01 [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug Rui Wang
2016-08-10 4:01 ` [PATCH v3 1/5] x86/ioapic: Change prototype of acpi_ioapic_add() Rui Wang
2016-08-10 4:01 ` [PATCH v3 2/5] x86/ioapic: Support hot-removal of IOAPICs present during boot Rui Wang
@ 2016-08-10 4:01 ` Rui Wang
2016-08-10 4:01 ` [PATCH v3 4/5] x86/ioapic: Fix lost IOAPIC resource after hot-removal and hotadd Rui Wang
` (2 subsequent siblings)
5 siblings, 0 replies; 9+ messages in thread
From: Rui Wang @ 2016-08-10 4:01 UTC (permalink / raw)
To: helgaas, tglx, rjw
Cc: tony.luck, bhelgaas, linux-acpi, linux-pci, linux-kernel, rui.y.wang
acpi_dev_filter_resource_type() returns 0 on success, and 1 on failure.
A return value of zero means there's a matching resource, so we should
continue within setup_res() to get the resource.
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
---
drivers/acpi/ioapic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/ioapic.c b/drivers/acpi/ioapic.c
index 2449377..8ab6d42 100644
--- a/drivers/acpi/ioapic.c
+++ b/drivers/acpi/ioapic.c
@@ -46,7 +46,7 @@ static acpi_status setup_res(struct acpi_resource *acpi_res, void *data)
struct resource_win win;
res->flags = 0;
- if (acpi_dev_filter_resource_type(acpi_res, IORESOURCE_MEM) == 0)
+ if (acpi_dev_filter_resource_type(acpi_res, IORESOURCE_MEM))
return AE_OK;
if (!acpi_dev_resource_memory(acpi_res, res)) {
--
1.8.3.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v3 4/5] x86/ioapic: Fix lost IOAPIC resource after hot-removal and hotadd
2016-08-10 4:01 [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug Rui Wang
` (2 preceding siblings ...)
2016-08-10 4:01 ` [PATCH v3 3/5] x86/ioapic: Fix setup_res() failing to get resource Rui Wang
@ 2016-08-10 4:01 ` Rui Wang
2016-08-10 4:01 ` [PATCH v3 5/5] x86/ioapic: Fix ioapic failing to request resource Rui Wang
2016-08-17 0:36 ` [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug Rafael J. Wysocki
5 siblings, 0 replies; 9+ messages in thread
From: Rui Wang @ 2016-08-10 4:01 UTC (permalink / raw)
To: helgaas, tglx, rjw
Cc: tony.luck, bhelgaas, linux-acpi, linux-pci, linux-kernel, rui.y.wang
IOAPIC resource at 0xfecxxxxx gets lost from /proc/iomem after
hot-removing and then hot-adding the IOAPIC device.
After system boot, in /proc/iomem:
fec00000-fecfffff : PNP0003:00
fec00000-fec003ff : IOAPIC 0
fec01000-fec013ff : IOAPIC 1
fec40000-fec403ff : IOAPIC 2
fec80000-fec803ff : IOAPIC 3
fecc0000-fecc03ff : IOAPIC 4
Then hot-remove IOAPIC 2 and hot-add it again:
fec00000-fecfffff : PNP0003:00
fec00000-fec003ff : IOAPIC 0
fec01000-fec013ff : IOAPIC 1
fec80000-fec803ff : IOAPIC 3
fecc0000-fecc03ff : IOAPIC 4
The range at 0xfec40000 is lost from /proc/iomem. It is because
handle_ioapic_add() requests resource from either PCI config BAR or
ACPI "_CRS", not both. But Intel platforms map the IOxAPIC registers
both at the PCI config BAR (called MBAR, dynamic), and at the ACPI
"_CRS" (called ABAR, static). The 0xfecX_YZ00 to 0xfecX_YZFF range
appears in "_CRS" of each IOAPIC device. Both ranges should be claimed
from /proc/iomem for exclusive use.
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
---
drivers/acpi/ioapic.c | 36 ++++++++++++++++++++----------------
1 file changed, 20 insertions(+), 16 deletions(-)
diff --git a/drivers/acpi/ioapic.c b/drivers/acpi/ioapic.c
index 8ab6d42..ee20111 100644
--- a/drivers/acpi/ioapic.c
+++ b/drivers/acpi/ioapic.c
@@ -97,7 +97,7 @@ static acpi_status handle_ioapic_add(acpi_handle handle, u32 lvl,
unsigned long long gsi_base;
struct acpi_pci_ioapic *ioapic;
struct pci_dev *dev = NULL;
- struct resource *res = NULL;
+ struct resource *res = NULL, *pci_res = NULL, *crs_res;
char *type = NULL;
if (!acpi_is_ioapic(handle, &type))
@@ -137,23 +137,28 @@ static acpi_status handle_ioapic_add(acpi_handle handle, u32 lvl,
pci_set_master(dev);
if (pci_request_region(dev, 0, type))
goto exit_disable;
- res = &dev->resource[0];
+ pci_res = &dev->resource[0];
ioapic->pdev = dev;
} else {
pci_dev_put(dev);
dev = NULL;
+ }
- res = &ioapic->res;
- acpi_walk_resources(handle, METHOD_NAME__CRS, setup_res, res);
- if (res->flags == 0) {
- acpi_handle_warn(handle, "failed to get resource\n");
- goto exit_free;
- } else if (request_resource(&iomem_resource, res)) {
- acpi_handle_warn(handle, "failed to insert resource\n");
- goto exit_free;
- }
+ crs_res = &ioapic->res;
+ acpi_walk_resources(handle, METHOD_NAME__CRS, setup_res, crs_res);
+ if (crs_res->flags == 0) {
+ acpi_handle_warn(handle, "failed to get resource\n");
+ goto exit_release;
+ } else if (request_resource(&iomem_resource, crs_res)) {
+ acpi_handle_warn(handle, "failed to insert resource\n");
+ goto exit_release;
}
+ /* try pci resource first, then "_CRS" resource */
+ res = pci_res;
+ if (!res || !res->flags)
+ res = crs_res;
+
if (acpi_register_ioapic(handle, res->start, (u32)gsi_base)) {
acpi_handle_warn(handle, "failed to register IOAPIC\n");
goto exit_release;
@@ -174,14 +179,13 @@ done:
exit_release:
if (dev)
pci_release_region(dev, 0);
- else
- release_resource(res);
+ if (ioapic->res.flags && ioapic->res.parent)
+ release_resource(&ioapic->res);
exit_disable:
if (dev)
pci_disable_device(dev);
exit_put:
pci_dev_put(dev);
-exit_free:
kfree(ioapic);
exit:
mutex_unlock(&ioapic_list_lock);
@@ -217,9 +221,9 @@ int acpi_ioapic_remove(struct acpi_pci_root *root)
pci_release_region(ioapic->pdev, 0);
pci_disable_device(ioapic->pdev);
pci_dev_put(ioapic->pdev);
- } else if (ioapic->res.flags && ioapic->res.parent) {
- release_resource(&ioapic->res);
}
+ if (ioapic->res.flags && ioapic->res.parent)
+ release_resource(&ioapic->res);
list_del(&ioapic->list);
kfree(ioapic);
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v3 5/5] x86/ioapic: Fix ioapic failing to request resource
2016-08-10 4:01 [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug Rui Wang
` (3 preceding siblings ...)
2016-08-10 4:01 ` [PATCH v3 4/5] x86/ioapic: Fix lost IOAPIC resource after hot-removal and hotadd Rui Wang
@ 2016-08-10 4:01 ` Rui Wang
2016-08-17 0:36 ` [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug Rafael J. Wysocki
5 siblings, 0 replies; 9+ messages in thread
From: Rui Wang @ 2016-08-10 4:01 UTC (permalink / raw)
To: helgaas, tglx, rjw
Cc: tony.luck, bhelgaas, linux-acpi, linux-pci, linux-kernel, rui.y.wang
handle_ioapic_add() uses request_resource() to request ACPI "_CRS"
resources. This can fail with the following error message:
[ 247.325693] ACPI: \_SB_.IIO1.AID1: failed to insert resource
This happens when there are multiple IOAPICs and DSDT groups their
"_CRS" resources as the children of a parent resource, as seen from
/proc/iomem:
fec00000-fecfffff : PNP0003:00
fec00000-fec003ff : IOAPIC 0
fec01000-fec013ff : IOAPIC 1
fec40000-fec403ff : IOAPIC 2
In this case request_resource() fails because there's a conflicting
resource which is the parent (fec0000-fecfffff). Fix it by using
insert_resource() which can request resources by taking the conflicting
resource as the parent.
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
---
drivers/acpi/ioapic.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/ioapic.c b/drivers/acpi/ioapic.c
index ee20111..6d7ce6e 100644
--- a/drivers/acpi/ioapic.c
+++ b/drivers/acpi/ioapic.c
@@ -146,10 +146,12 @@ static acpi_status handle_ioapic_add(acpi_handle handle, u32 lvl,
crs_res = &ioapic->res;
acpi_walk_resources(handle, METHOD_NAME__CRS, setup_res, crs_res);
+ crs_res->name = type;
+ crs_res->flags |= IORESOURCE_BUSY;
if (crs_res->flags == 0) {
acpi_handle_warn(handle, "failed to get resource\n");
goto exit_release;
- } else if (request_resource(&iomem_resource, crs_res)) {
+ } else if (insert_resource(&iomem_resource, crs_res)) {
acpi_handle_warn(handle, "failed to insert resource\n");
goto exit_release;
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH v3 2/5] x86/ioapic: Support hot-removal of IOAPICs present during boot
2016-08-10 4:01 ` [PATCH v3 2/5] x86/ioapic: Support hot-removal of IOAPICs present during boot Rui Wang
@ 2016-08-17 0:33 ` Rafael J. Wysocki
0 siblings, 0 replies; 9+ messages in thread
From: Rafael J. Wysocki @ 2016-08-17 0:33 UTC (permalink / raw)
To: Rui Wang
Cc: helgaas, tglx, tony.luck, bhelgaas, linux-acpi, linux-pci, linux-kernel
On Wednesday, August 10, 2016 12:01:55 PM Rui Wang wrote:
> IOAPICs present during system boot aren't added to ioapic_list,
> thus are unable to be hot-removed. Fix it by calling
> acpi_ioapic_add() during root bus enumeration.
>
> Signed-off-by: Rui Wang <rui.y.wang@intel.com>
This patch has been ACKed by Bjorn, right?
In which case you should have added the Acked-by tag to it when reposting.
> ---
> drivers/acpi/pci_root.c | 10 ++++++++++
> drivers/pci/setup-bus.c | 5 ++++-
> 2 files changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
> index b07eda1..bf601d4 100644
> --- a/drivers/acpi/pci_root.c
> +++ b/drivers/acpi/pci_root.c
> @@ -614,6 +614,16 @@ static int acpi_pci_root_add(struct acpi_device *device,
> if (hotadd) {
> pcibios_resource_survey_bus(root->bus);
> pci_assign_unassigned_root_bus_resources(root->bus);
> + /*
> + * This is only called for the hotadd case. For the boot-time
> + * case, we need to wait until after PCI initialization in
> + * order to deal with IOAPICs mapped in on a PCI BAR.
> + *
> + * This is currently x86-specific, because acpi_ioapic_add()
> + * is an empty function without CONFIG_ACPI_HOTPLUG_IOAPIC.
> + * And CONFIG_ACPI_HOTPLUG_IOAPIC depends on CONFIG_X86_IO_APIC
> + * (see drivers/acpi/Kconfig).
> + */
> acpi_ioapic_add(root->device->handle);
> }
>
> diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
> index c74059e..ec538d3 100644
> --- a/drivers/pci/setup-bus.c
> +++ b/drivers/pci/setup-bus.c
> @@ -25,6 +25,7 @@
> #include <linux/ioport.h>
> #include <linux/cache.h>
> #include <linux/slab.h>
> +#include <linux/acpi.h>
> #include "pci.h"
>
> unsigned int pci_flags;
> @@ -1852,8 +1853,10 @@ void __init pci_assign_unassigned_resources(void)
> {
> struct pci_bus *root_bus;
>
> - list_for_each_entry(root_bus, &pci_root_buses, node)
> + list_for_each_entry(root_bus, &pci_root_buses, node) {
> pci_assign_unassigned_root_bus_resources(root_bus);
> + acpi_ioapic_add(ACPI_HANDLE(root_bus->bridge));
> + }
> }
>
> void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge)
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug
2016-08-10 4:01 [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug Rui Wang
` (4 preceding siblings ...)
2016-08-10 4:01 ` [PATCH v3 5/5] x86/ioapic: Fix ioapic failing to request resource Rui Wang
@ 2016-08-17 0:36 ` Rafael J. Wysocki
2016-08-17 2:46 ` Rui Wang
5 siblings, 1 reply; 9+ messages in thread
From: Rafael J. Wysocki @ 2016-08-17 0:36 UTC (permalink / raw)
To: Rui Wang
Cc: helgaas, tglx, tony.luck, bhelgaas, linux-acpi, linux-pci,
linux-kernel, x86
On Wednesday, August 10, 2016 12:01:53 PM Rui Wang wrote:
> A set of patches fixing bugs found while testing IOAPIC hotplug.
This should have been posted to the x86@kernel.org list too for the benefit
of the maintainers.
Can you please resend it with a CC to that one (and the Bjorn's ACK on the
second patch)?
Thanks,
Rafael
> Changelog:
>
> Changes from v2 to v3:
> * Rebased on top of 4.8-rc1 per Bjorn & Rafael.
> * Improved the commit message of 0003, w/ clearer explanation.
>
> Changes from v1 to v2:
> * Split the first patch into two as advised by Bjorn: "would be nicer if
> the interface change and header file munging were in a separate patch so
> they wouldn't obscure the meat of the change, i.e., the addition of calls
> to acpi_ioapic_add()."
> * Removed acpi_ioapic_add() as an exported symbol.
> * Fixed some typos, and s/acpi/ACPI/, s/ioapic/IOAPIC/ throughout.
> * Fixed a warning from 0-day testing.
>
> Rui Wang (5):
> x86/ioapic: Change prototype of acpi_ioapic_add()
> x86/ioapic: Support hot-removal of IOAPICs present during boot
> x86/ioapic: Fix setup_res() failing to get resource
> x86/ioapic: Fix lost IOAPIC resource after hot-removal and hotadd
> x86/ioapic: Fix ioapic failing to request resource
>
> drivers/acpi/internal.h | 2 --
> drivers/acpi/ioapic.c | 46 ++++++++++++++++++++++++++--------------------
> drivers/acpi/pci_root.c | 12 +++++++++++-
> drivers/pci/setup-bus.c | 5 ++++-
> include/linux/acpi.h | 6 ++++++
> 5 files changed, 47 insertions(+), 24 deletions(-)
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug
2016-08-17 0:36 ` [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug Rafael J. Wysocki
@ 2016-08-17 2:46 ` Rui Wang
0 siblings, 0 replies; 9+ messages in thread
From: Rui Wang @ 2016-08-17 2:46 UTC (permalink / raw)
To: rjw
Cc: helgaas, tglx, tony.luck, bhelgaas, linux-acpi, linux-pci,
linux-kernel, rui.y.wang, x86
On Wed, Aug 17, 2016 8:36 AM Rafael J. Wysocki wrote:
> On Wednesday, August 10, 2016 12:01:53 PM Rui Wang wrote:
> > A set of patches fixing bugs found while testing IOAPIC hotplug.
>
> This should have been posted to the x86@kernel.org list too for the benefit
> of the maintainers.
>
> Can you please resend it with a CC to that one (and the Bjorn's ACK on the
> second patch)?
>
Thanks for the advice.
Will do.
Regards,
Rui
> Thanks,
> Rafael
>
>
> > Changelog:
> >
> > Changes from v2 to v3:
> > * Rebased on top of 4.8-rc1 per Bjorn & Rafael.
> > * Improved the commit message of 0003, w/ clearer explanation.
> >
> > Changes from v1 to v2:
> > * Split the first patch into two as advised by Bjorn: "would be nicer
> > if the interface change and header file munging were in a separate
> > patch so they wouldn't obscure the meat of the change, i.e., the
> > addition of calls to acpi_ioapic_add()."
> > * Removed acpi_ioapic_add() as an exported symbol.
> > * Fixed some typos, and s/acpi/ACPI/, s/ioapic/IOAPIC/ throughout.
> > * Fixed a warning from 0-day testing.
> >
> > Rui Wang (5):
> > x86/ioapic: Change prototype of acpi_ioapic_add()
> > x86/ioapic: Support hot-removal of IOAPICs present during boot
> > x86/ioapic: Fix setup_res() failing to get resource
> > x86/ioapic: Fix lost IOAPIC resource after hot-removal and hotadd
> > x86/ioapic: Fix ioapic failing to request resource
> >
> > drivers/acpi/internal.h | 2 --
> > drivers/acpi/ioapic.c | 46 ++++++++++++++++++++++++++-----------------
> ---
> > drivers/acpi/pci_root.c | 12 +++++++++++- drivers/pci/setup-bus.c |
> > 5 ++++-
> > include/linux/acpi.h | 6 ++++++
> > 5 files changed, 47 insertions(+), 24 deletions(-)
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2016-08-17 3:03 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-08-10 4:01 [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug Rui Wang
2016-08-10 4:01 ` [PATCH v3 1/5] x86/ioapic: Change prototype of acpi_ioapic_add() Rui Wang
2016-08-10 4:01 ` [PATCH v3 2/5] x86/ioapic: Support hot-removal of IOAPICs present during boot Rui Wang
2016-08-17 0:33 ` Rafael J. Wysocki
2016-08-10 4:01 ` [PATCH v3 3/5] x86/ioapic: Fix setup_res() failing to get resource Rui Wang
2016-08-10 4:01 ` [PATCH v3 4/5] x86/ioapic: Fix lost IOAPIC resource after hot-removal and hotadd Rui Wang
2016-08-10 4:01 ` [PATCH v3 5/5] x86/ioapic: Fix ioapic failing to request resource Rui Wang
2016-08-17 0:36 ` [PATCH v3 0/5] Fixing a set of bugs for ioapic hotplug Rafael J. Wysocki
2016-08-17 2:46 ` Rui Wang
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