Re: [PATCH v4 1/6] ACPI: Add an interface to evaluate _OST

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

On Thu, 2012-05-24 at 12:09 -0600, Shuah Khan wrote:
> On Wed, 2012-05-23 at 20:25 -0600, Toshi Kani wrote:
> ACPI_HOTPLUG_OST is defined when all relevant ACPI hotplug operations,
> such as CPU, memory and container hotplug, are enabled. This assures
> consistent behavior among the hotplug operations with regarding the
> _OST support. When ACPI_HOTPLUG_OST is not defined, this function is
> a no-op.
> ACPI PCI hotplug is not enhanced to support _OST at this time since it
> is a legacy method being replaced by PCIe native hotplug. _OST support
> for ACPI PCI hotplug may be added in future if necessary.
> > +
> > +/* Enable _OST when all relevant hotplug operations are enabled */
> > +#if defined(CONFIG_ACPI_HOTPLUG_CPU) &&			\
> > +	(defined(CONFIG_ACPI_HOTPLUG_MEMORY) ||		\
> > +	(defined(CONFIG_ACPI_CONTAINER) ||		\
> > +#define ACPI_HOTPLUG_OST
> > +#endif
> Already covered in my general comments, but just in case:
> This is restricted to a few of the possible cases _OST is intended for.
> What happens when a kernel is configed with all of the above and PCI and
> PCIe hotplug configs. _OST will only be evaluated in these cases,
> shouldn't OS evaluate _OST in all cases once it tells firmware it
> supports _OST in the case of Insertion/Ejection?

PCIe native hotplug is a non-ACPI based hotplug, and is not supported by
_OST.  ACPI PCI hotplug is being replaced by PCIe native hotplug, so it
is not supported as described in the change log.  Please see the email
below on this.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at

[Other Archives]     [Linux Kernel Newbies]     [Linux Driver Development]     [Fedora Kernel]     [Linux Kernel Testers]     [Linux SH]     [Linux Omap]     [Linux Kbuild]     [Linux Tape]     [Linux Input]     [Linux Kernel Janitors]     [Linux Kernel Packagers]     [Linux Doc]     [Linux Man Pages]     [Linux API]     [Linux Memory Management]     [Linux Modules]     [Linux Standards]     [Kernel Announce]     [Netdev]     [Git]     [Linux PCI]     Linux CAN Development     [Linux I2C]     [Linux RDMA]     [Linux NUMA]     [Netfilter]     [Netfilter Devel]     [SELinux]     [Bugtraq]     [FIO]     [Linux Perf Users]     [Linux Serial]     [Linux PPP]     [Linux ISDN]     [Linux Next]     [Kernel Stable Commits]     [Linux Tip Commits]     [Kernel MM Commits]     [Linux Security Module]     [AutoFS]     [Filesystem Development]     [Ext3 Filesystem]     [Linux bcache]     [Ext4 Filesystem]     [Linux BTRFS]     [Linux CEPH Filesystem]     [Linux XFS]     [XFS]     [Linux NFS]     [Linux CIFS]     [Ecryptfs]     [Linux NILFS]     [Linux Cachefs]     [Reiser FS]     [Initramfs]     [Linux FB Devel]     [Linux OpenGL]     [DRI Devel]     [Fastboot]     [Linux RT Users]     [Linux RT Stable]     [eCos]     [Corosync]     [Linux Clusters]     [LVS Devel]     [Hot Plug]     [Linux Virtualization]     [KVM]     [KVM PPC]     [KVM ia64]     [Linux Containers]     [Linux Hexagon]     [Linux Cgroups]     [Util Linux]     [Wireless]     [Linux Bluetooth]     [Bluez Devel]     [Ethernet Bridging]     [Embedded Linux]     [Barebox]     [Linux MMC]     [Linux IIO]     [Sparse]     [Smatch]     [Linux Arch]     [x86 Platform Driver]     [Linux ACPI]     [Linux IBM ACPI]     [LM Sensors]     [CPU Freq]     [Linux Power Management]     [Linmodems]     [Linux DCCP]     [Linux SCTP]     [ALSA Devel]     [Linux USB]     [Linux PA RISC]     [Linux Samsung SOC]     [MIPS Linux]     [IBM S/390 Linux]     [ARM Linux]     [ARM Kernel]     [ARM MSM]     [Tegra Devel]     [Sparc Linux]     [Linux Security]     [Linux Sound]     [Linux Media]     [Video 4 Linux]     [Linux IRDA Users]     [Linux for the blind]     [Linux RAID]     [Linux ATA RAID]     [Device Mapper]     [Linux SCSI]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Linux IDE]     [Linux SMP]     [Linux AXP]     [Linux Alpha]     [Linux M68K]     [Linux ia64]     [Linux 8086]     [Linux x86_64]     [Linux Config]     [Linux Apps]     [Linux MSDOS]     [Linux X.25]     [Linux Crypto]     [DM Crypt]     [Linux Trace Users]     [Linux Btrace]     [Linux Watchdog]     [Utrace Devel]     [Linux C Programming]     [Linux Assembly]     [Dash]     [DWARVES]     [Hail Devel]     [Linux Kernel Debugger]     [Linux gcc]     [Gcc Help]     [X.Org]     [Wine]

Add to Google Powered by Linux

[Older Kernel Discussion]     [Yosemite National Park Forum]     [Large Format Photos]     [Gimp]     [Yosemite Photos]     [Stuff]