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| author | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2021-04-13 13:52:24 -0400 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2021-04-23 09:31:50 +0200 |
| commit | 01325044dbe47a7dc66b786445727a6de304f328 (patch) | |
| tree | 5174d2caeae9b17d95a00c44c4355b2f14eac936 /drivers/xen/pcpu.c | |
| parent | 28738fab6a424f58aea4b122ee96ee078ea1de93 (diff) | |
| download | linux-01325044dbe47a7dc66b786445727a6de304f328.tar.bz2 | |
xen: Remove support for PV ACPI cpu/memory hotplug
Commit 76fc253723ad ("xen/acpi-stub: Disable it b/c the acpi_processor_add
is no longer called.") declared as BROKEN support for Xen ACPI stub (which
is required for xen-acpi-{cpu|memory}-hotplug) and suggested that this
is temporary and will be soon fixed. This was in March 2013.
Further, commit cfafae940381 ("xen: rename dom0_op to platform_op")
renamed an interface used by memory hotplug code without updating that
code (as it was BROKEN and therefore not compiled). This was
in November 2015 and has gone unnoticed for over 5 year.
It is now clear that this code is of no interest to anyone and therefore
should be removed.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/1618336344-3162-1-git-send-email-boris.ostrovsky@oracle.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'drivers/xen/pcpu.c')
| -rw-r--r-- | drivers/xen/pcpu.c | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/drivers/xen/pcpu.c b/drivers/xen/pcpu.c index cdc6daa7a9f6..1bcdd5227771 100644 --- a/drivers/xen/pcpu.c +++ b/drivers/xen/pcpu.c @@ -345,41 +345,6 @@ static irqreturn_t xen_pcpu_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -/* Sync with Xen hypervisor after cpu hotadded */ -void xen_pcpu_hotplug_sync(void) -{ - schedule_work(&xen_pcpu_work); -} -EXPORT_SYMBOL_GPL(xen_pcpu_hotplug_sync); - -/* - * For hypervisor presented cpu, return logic cpu id; - * For hypervisor non-presented cpu, return -ENODEV. - */ -int xen_pcpu_id(uint32_t acpi_id) -{ - int cpu_id = 0, max_id = 0; - struct xen_platform_op op; - - op.cmd = XENPF_get_cpuinfo; - while (cpu_id <= max_id) { - op.u.pcpu_info.xen_cpuid = cpu_id; - if (HYPERVISOR_platform_op(&op)) { - cpu_id++; - continue; - } - - if (acpi_id == op.u.pcpu_info.acpi_id) - return cpu_id; - if (op.u.pcpu_info.max_present > max_id) - max_id = op.u.pcpu_info.max_present; - cpu_id++; - } - - return -ENODEV; -} -EXPORT_SYMBOL_GPL(xen_pcpu_id); - static int __init xen_pcpu_init(void) { int irq, ret; |