| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20240805175400.000028ad@Huawei.com>
Date: Mon, 5 Aug 2024 17:54:00 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
CC: Shiju Jose <shiju.jose@...wei.com>, "Michael S. Tsirkin" <mst@...hat.com>,
Ani Sinha <anisinha@...hat.com>, Dongjiu Geng <gengdongjiu1@...il.com>, Igor
Mammedov <imammedo@...hat.com>, "Peter Maydell" <peter.maydell@...aro.org>,
Shannon Zhao <shannon.zhaosl@...il.com>, <linux-kernel@...r.kernel.org>,
<qemu-arm@...gnu.org>, <qemu-devel@...gnu.org>
Subject: Re: [PATCH v5 3/7] arm/virt: Wire up GPIO error source for ACPI /
GHES
On Fri, 2 Aug 2024 23:43:58 +0200
Mauro Carvalho Chehab <mchehab+huawei@...nel.org> wrote:
Do we need to rename this now there is a GED involved?
Is it even technically a GPIO any more?
Spec says in 18.3.2.7
HW-reduced ACPI platforms signal the error using a GPIO
interrupt or another interrupt declared under
a generic event device (Interrupt-signaled ACPI events)
and goes on to say that a _CRS entry is used to
list the interrupt.
Give the Generic Event Device has a _CRS
with aml_interrupt() as the type I think we should
even have the hest entry say it's an interrupt (external?)
rather than a gpio.
> Adds support to ARM virtualization to allow handling
> a General Purpose Event (GPE) via GED error device.
>
> It is aligned with Linux Kernel patch:
> https://lore.kernel.org/lkml/1272350481-27951-8-git-send-email-ying.huang@intel.com/
>
> Co-authored-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> Co-authored-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Again, more or less fine with this
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
to go with that co-auth
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> ---
> hw/acpi/ghes.c | 3 +++
> hw/arm/virt-acpi-build.c | 1 +
> hw/arm/virt.c | 16 +++++++++++++++-
> include/hw/acpi/ghes.h | 3 +++
> include/hw/arm/virt.h | 1 +
> 5 files changed, 23 insertions(+), 1 deletion(-)
>
> diff --git a/hw/acpi/ghes.c b/hw/acpi/ghes.c
> index e9511d9b8f71..8d0262e6c1aa 100644
> --- a/hw/acpi/ghes.c
> +++ b/hw/acpi/ghes.c
> @@ -444,6 +444,9 @@ int acpi_ghes_record_errors(uint8_t source_id, uint64_t physical_address)
> return ret;
> }
>
> +NotifierList generic_error_notifiers =
> + NOTIFIER_LIST_INITIALIZER(error_device_notifiers);
> +
> bool acpi_ghes_present(void)
> {
> AcpiGedState *acpi_ged_state;
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index f76fb117adff..f8bbe3e7a0b8 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -858,6 +858,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> }
>
> acpi_dsdt_add_power_button(scope);
> + acpi_dsdt_add_error_device(scope);
> #ifdef CONFIG_TPM
> acpi_dsdt_add_tpm(scope, vms);
> #endif
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 687fe0bb8bc9..8b315328154f 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -73,6 +73,7 @@
> #include "standard-headers/linux/input.h"
> #include "hw/arm/smmuv3.h"
> #include "hw/acpi/acpi.h"
> +#include "hw/acpi/ghes.h"
> #include "target/arm/cpu-qom.h"
> #include "target/arm/internals.h"
> #include "target/arm/multiprocessing.h"
> @@ -677,7 +678,7 @@ static inline DeviceState *create_acpi_ged(VirtMachineState *vms)
> DeviceState *dev;
> MachineState *ms = MACHINE(vms);
> int irq = vms->irqmap[VIRT_ACPI_GED];
> - uint32_t event = ACPI_GED_PWR_DOWN_EVT;
> + uint32_t event = ACPI_GED_PWR_DOWN_EVT | ACPI_GED_ERROR_EVT;
>
> if (ms->ram_slots) {
> event |= ACPI_GED_MEM_HOTPLUG_EVT;
> @@ -1009,6 +1010,15 @@ static void virt_powerdown_req(Notifier *n, void *opaque)
> }
> }
>
> +static void virt_generic_error_req(Notifier *n, void *opaque)
> +{
> + VirtMachineState *s = container_of(n, VirtMachineState, generic_error_notifier);
> +
> + if (s->acpi_dev) {
> + acpi_send_event(s->acpi_dev, ACPI_GENERIC_ERROR);
> + }
> +}
> +
> static void create_gpio_keys(char *fdt, DeviceState *pl061_dev,
> uint32_t phandle)
> {
> @@ -2397,6 +2407,10 @@ static void machvirt_init(MachineState *machine)
> vms->powerdown_notifier.notify = virt_powerdown_req;
> qemu_register_powerdown_notifier(&vms->powerdown_notifier);
>
> + vms->generic_error_notifier.notify = virt_generic_error_req;
> + notifier_list_add(&generic_error_notifiers,
> + &vms->generic_error_notifier);
> +
> /* Create mmio transports, so the user can create virtio backends
> * (which will be automatically plugged in to the transports). If
> * no backend is created the transport will just sit harmlessly idle.
> diff --git a/include/hw/acpi/ghes.h b/include/hw/acpi/ghes.h
> index 674f6958e905..6891eafff5ab 100644
> --- a/include/hw/acpi/ghes.h
> +++ b/include/hw/acpi/ghes.h
> @@ -23,6 +23,9 @@
> #define ACPI_GHES_H
>
> #include "hw/acpi/bios-linker-loader.h"
> +#include "qemu/notify.h"
> +
> +extern NotifierList generic_error_notifiers;
>
> /*
> * Values for Hardware Error Notification Type field
> diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
> index a4d937ed45ac..ad9f6e94dcc5 100644
> --- a/include/hw/arm/virt.h
> +++ b/include/hw/arm/virt.h
> @@ -175,6 +175,7 @@ struct VirtMachineState {
> DeviceState *gic;
> DeviceState *acpi_dev;
> Notifier powerdown_notifier;
> + Notifier generic_error_notifier;
> PCIBus *bus;
> char *oem_id;
> char *oem_table_id;
Powered by blists - more mailing lists