summaryrefslogtreecommitdiffstats
path: root/drivers/hv
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-09-07 18:25:15 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-07 18:25:15 +0200
commit57e88b43b81301d9b28f124a5576ac43a1cf9e8d (patch)
tree4f8be8cab8afe07dbb4b8469bf6f873f4372b396 /drivers/hv
parentMerge branch 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/l... (diff)
parenttracing/hyper-v: Trace hyperv_mmu_flush_tlb_others() (diff)
downloadlinux-57e88b43b81301d9b28f124a5576ac43a1cf9e8d.tar.xz
linux-57e88b43b81301d9b28f124a5576ac43a1cf9e8d.zip
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform updates from Ingo Molnar: "The main changes include various Hyper-V optimizations such as faster hypercalls and faster/better TLB flushes - and there's also some Intel-MID cleanups" * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tracing/hyper-v: Trace hyperv_mmu_flush_tlb_others() x86/hyper-v: Support extended CPU ranges for TLB flush hypercalls x86/platform/intel-mid: Make several arrays static, to make code smaller MAINTAINERS: Add missed file for Hyper-V x86/hyper-v: Use hypercall for remote TLB flush hyper-v: Globalize vp_index x86/hyper-v: Implement rep hypercalls hyper-v: Use fast hypercall for HVCALL_SIGNAL_EVENT x86/hyper-v: Introduce fast hypercall implementation x86/hyper-v: Make hv_do_hypercall() inline x86/hyper-v: Include hyperv/ only when CONFIG_HYPERV is set x86/platform/intel-mid: Make 'bt_sfi_data' const x86/platform/intel-mid: Make IRQ allocation a bit more flexible x86/platform/intel-mid: Group timers callbacks together
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/Kconfig1
-rw-r--r--drivers/hv/channel_mgmt.c20
-rw-r--r--drivers/hv/connection.c7
-rw-r--r--drivers/hv/hv.c9
-rw-r--r--drivers/hv/hyperv_vmbus.h11
-rw-r--r--drivers/hv/vmbus_drv.c17
6 files changed, 11 insertions, 54 deletions
diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
index c29cd5387a35..50b89ea0e60f 100644
--- a/drivers/hv/Kconfig
+++ b/drivers/hv/Kconfig
@@ -3,6 +3,7 @@ menu "Microsoft Hyper-V guest support"
config HYPERV
tristate "Microsoft Hyper-V client drivers"
depends on X86 && ACPI && PCI && X86_LOCAL_APIC && HYPERVISOR_GUEST
+ select PARAVIRT
help
Select this option to run Linux as a Hyper-V client operating
system.
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 968af173c4c1..060df71c2e8b 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -603,7 +603,7 @@ static void init_vp_index(struct vmbus_channel *channel, u16 dev_type)
*/
channel->numa_node = 0;
channel->target_cpu = 0;
- channel->target_vp = hv_context.vp_index[0];
+ channel->target_vp = hv_cpu_number_to_vp_number(0);
return;
}
@@ -687,7 +687,7 @@ static void init_vp_index(struct vmbus_channel *channel, u16 dev_type)
}
channel->target_cpu = cur_cpu;
- channel->target_vp = hv_context.vp_index[cur_cpu];
+ channel->target_vp = hv_cpu_number_to_vp_number(cur_cpu);
}
static void vmbus_wait_for_unload(void)
@@ -809,21 +809,12 @@ static void vmbus_onoffer(struct vmbus_channel_message_header *hdr)
/*
* Setup state for signalling the host.
*/
- newchannel->sig_event = (struct hv_input_signal_event *)
- (ALIGN((unsigned long)
- &newchannel->sig_buf,
- HV_HYPERCALL_PARAM_ALIGN));
-
- newchannel->sig_event->connectionid.asu32 = 0;
- newchannel->sig_event->connectionid.u.id = VMBUS_EVENT_CONNECTION_ID;
- newchannel->sig_event->flag_number = 0;
- newchannel->sig_event->rsvdz = 0;
+ newchannel->sig_event = VMBUS_EVENT_CONNECTION_ID;
if (vmbus_proto_version != VERSION_WS2008) {
newchannel->is_dedicated_interrupt =
(offer->is_dedicated_interrupt != 0);
- newchannel->sig_event->connectionid.u.id =
- offer->connection_id;
+ newchannel->sig_event = offer->connection_id;
}
memcpy(&newchannel->offermsg, offer,
@@ -1251,8 +1242,7 @@ struct vmbus_channel *vmbus_get_outgoing_channel(struct vmbus_channel *primary)
return outgoing_channel;
}
- cur_cpu = hv_context.vp_index[get_cpu()];
- put_cpu();
+ cur_cpu = hv_cpu_number_to_vp_number(smp_processor_id());
list_for_each_safe(cur, tmp, &primary->sc_list) {
cur_channel = list_entry(cur, struct vmbus_channel, sc_list);
if (cur_channel->state != CHANNEL_OPENED_STATE)
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
index 59c11ff90d12..f41901f80b64 100644
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -32,6 +32,8 @@
#include <linux/hyperv.h>
#include <linux/export.h>
#include <asm/hyperv.h>
+#include <asm/mshyperv.h>
+
#include "hyperv_vmbus.h"
@@ -94,7 +96,8 @@ static int vmbus_negotiate_version(struct vmbus_channel_msginfo *msginfo,
* the CPU attempting to connect may not be CPU 0.
*/
if (version >= VERSION_WIN8_1) {
- msg->target_vcpu = hv_context.vp_index[smp_processor_id()];
+ msg->target_vcpu =
+ hv_cpu_number_to_vp_number(smp_processor_id());
vmbus_connection.connect_cpu = smp_processor_id();
} else {
msg->target_vcpu = 0;
@@ -406,6 +409,6 @@ void vmbus_set_event(struct vmbus_channel *channel)
if (!channel->is_dedicated_interrupt)
vmbus_send_interrupt(child_relid);
- hv_do_hypercall(HVCALL_SIGNAL_EVENT, channel->sig_event, NULL);
+ hv_do_fast_hypercall8(HVCALL_SIGNAL_EVENT, channel->sig_event);
}
EXPORT_SYMBOL_GPL(vmbus_set_event);
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 2ea12207caa0..8267439dd1ee 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -234,7 +234,6 @@ int hv_synic_init(unsigned int cpu)
union hv_synic_siefp siefp;
union hv_synic_sint shared_sint;
union hv_synic_scontrol sctrl;
- u64 vp_index;
/* Setup the Synic's message page */
hv_get_simp(simp.as_uint64);
@@ -276,14 +275,6 @@ int hv_synic_init(unsigned int cpu)
hv_context.synic_initialized = true;
/*
- * Setup the mapping between Hyper-V's notion
- * of cpuid and Linux' notion of cpuid.
- * This array will be indexed using Linux cpuid.
- */
- hv_get_vp_index(vp_index);
- hv_context.vp_index[cpu] = (u32)vp_index;
-
- /*
* Register the per-cpu clockevent source.
*/
if (ms_hyperv.features & HV_X64_MSR_SYNTIMER_AVAILABLE)
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 1b6a5e0dfa75..49569f8fe038 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -229,17 +229,6 @@ struct hv_context {
struct hv_per_cpu_context __percpu *cpu_context;
/*
- * Hypervisor's notion of virtual processor ID is different from
- * Linux' notion of CPU ID. This information can only be retrieved
- * in the context of the calling CPU. Setup a map for easy access
- * to this information:
- *
- * vp_index[a] is the Hyper-V's processor ID corresponding to
- * Linux cpuid 'a'.
- */
- u32 vp_index[NR_CPUS];
-
- /*
* To manage allocations in a NUMA node.
* Array indexed by numa node ID.
*/
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 43160a2eafe0..a9d49f6f6501 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -1454,23 +1454,6 @@ void vmbus_free_mmio(resource_size_t start, resource_size_t size)
}
EXPORT_SYMBOL_GPL(vmbus_free_mmio);
-/**
- * vmbus_cpu_number_to_vp_number() - Map CPU to VP.
- * @cpu_number: CPU number in Linux terms
- *
- * This function returns the mapping between the Linux processor
- * number and the hypervisor's virtual processor number, useful
- * in making hypercalls and such that talk about specific
- * processors.
- *
- * Return: Virtual processor number in Hyper-V terms
- */
-int vmbus_cpu_number_to_vp_number(int cpu_number)
-{
- return hv_context.vp_index[cpu_number];
-}
-EXPORT_SYMBOL_GPL(vmbus_cpu_number_to_vp_number);
-
static int vmbus_acpi_add(struct acpi_device *device)
{
acpi_status result;