* [PATCH v8 1/4] KVM: PPC: epapr: Factor out the epapr init
2012-03-07 22:31 [PATCH v8 0/4] KVM: PPC: Add ePAPR idle hcall support Stuart Yoder
@ 2012-03-07 22:31 ` Stuart Yoder
2012-03-07 22:31 ` [PATCH v8 2/4] KVM: PPC: epapr: Add idle hcall support for host Stuart Yoder
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: Stuart Yoder @ 2012-03-07 22:31 UTC (permalink / raw)
To: agraf, kvm-ppc, kvm
From: Liu Yu-B13201 <Yu.Liu@freescale.com>
from the kvm guest paravirt init code.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
[stuart.yoder@freescale.com: misc minor fixes]
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
---
-v8: no changes
arch/powerpc/include/asm/epapr_hcalls.h | 2 +
arch/powerpc/kernel/Makefile | 1 +
arch/powerpc/kernel/epapr_hcalls.S | 25 +++++++++++++++
arch/powerpc/kernel/epapr_paravirt.c | 52 +++++++++++++++++++++++++++++++
arch/powerpc/kernel/kvm.c | 28 ++---------------
arch/powerpc/kernel/kvm_emul.S | 10 ------
arch/powerpc/platforms/Kconfig | 9 +++++
7 files changed, 92 insertions(+), 35 deletions(-)
create mode 100644 arch/powerpc/kernel/epapr_hcalls.S
create mode 100644 arch/powerpc/kernel/epapr_paravirt.c
diff --git a/arch/powerpc/include/asm/epapr_hcalls.h b/arch/powerpc/include/asm/epapr_hcalls.h
index f3b0c2c..2173d4c 100644
--- a/arch/powerpc/include/asm/epapr_hcalls.h
+++ b/arch/powerpc/include/asm/epapr_hcalls.h
@@ -148,6 +148,8 @@
#define EV_HCALL_CLOBBERS2 EV_HCALL_CLOBBERS3, "r5"
#define EV_HCALL_CLOBBERS1 EV_HCALL_CLOBBERS2, "r4"
+extern bool epapr_paravirt_enabled;
+extern u32 epapr_hypercall_start[];
/*
* We use "uintptr_t" to define a register because it's guaranteed to be a
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index ce4f7f1..09011d6 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -134,6 +134,7 @@ ifneq ($(CONFIG_XMON)$(CONFIG_KEXEC),)
obj-y += ppc_save_regs.o
endif
+obj-$(CONFIG_EPAPR_PARAVIRT) += epapr_paravirt.o epapr_hcalls.o
obj-$(CONFIG_KVM_GUEST) += kvm.o kvm_emul.o
# Disable GCOV in odd or sensitive code
diff --git a/arch/powerpc/kernel/epapr_hcalls.S b/arch/powerpc/kernel/epapr_hcalls.S
new file mode 100644
index 0000000..697b390
--- /dev/null
+++ b/arch/powerpc/kernel/epapr_hcalls.S
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/threads.h>
+#include <asm/reg.h>
+#include <asm/page.h>
+#include <asm/cputable.h>
+#include <asm/thread_info.h>
+#include <asm/ppc_asm.h>
+#include <asm/asm-offsets.h>
+
+/* Hypercall entry point. Will be patched with device tree instructions. */
+.global epapr_hypercall_start
+epapr_hypercall_start:
+ li r3, -1
+ nop
+ nop
+ nop
+ blr
diff --git a/arch/powerpc/kernel/epapr_paravirt.c b/arch/powerpc/kernel/epapr_paravirt.c
new file mode 100644
index 0000000..028aeae
--- /dev/null
+++ b/arch/powerpc/kernel/epapr_paravirt.c
@@ -0,0 +1,52 @@
+/*
+ * ePAPR para-virtualization support.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/of.h>
+#include <asm/epapr_hcalls.h>
+#include <asm/cacheflush.h>
+#include <asm/code-patching.h>
+
+bool epapr_paravirt_enabled;
+
+static int __init epapr_paravirt_init(void)
+{
+ struct device_node *hyper_node;
+ const u32 *insts;
+ int len, i;
+
+ hyper_node = of_find_node_by_path("/hypervisor");
+ if (!hyper_node)
+ return -ENODEV;
+
+ insts = of_get_property(hyper_node, "hcall-instructions", &len);
+ if (!insts)
+ return -ENODEV;
+
+ if (len % 4 || len > (4 * 4))
+ return -ENODEV;
+
+ for (i = 0; i < (len / 4); i++)
+ patch_instruction(epapr_hypercall_start + i, insts[i]);
+
+ epapr_paravirt_enabled = true;
+
+ return 0;
+}
+
+early_initcall(epapr_paravirt_init);
diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c
index 9b6682e..b8a77a1 100644
--- a/arch/powerpc/kernel/kvm.c
+++ b/arch/powerpc/kernel/kvm.c
@@ -30,6 +30,7 @@
#include <asm/cacheflush.h>
#include <asm/disassemble.h>
#include <asm/ppc-opcode.h>
+#include <asm/epapr_hcalls.h>
#include <asm/machdep.h>
#include <asm/mpic.h>
@@ -739,7 +740,7 @@ unsigned long kvm_hypercall(unsigned long *in,
unsigned long register r11 asm("r11") = nr;
unsigned long register r12 asm("r12");
- asm volatile("bl kvm_hypercall_start"
+ asm volatile("bl epapr_hypercall_start"
: "=r"(r0), "=r"(r3), "=r"(r4), "=r"(r5), "=r"(r6),
"=r"(r7), "=r"(r8), "=r"(r9), "=r"(r10), "=r"(r11),
"=r"(r12)
@@ -760,29 +761,6 @@ unsigned long kvm_hypercall(unsigned long *in,
}
EXPORT_SYMBOL_GPL(kvm_hypercall);
-static int kvm_para_setup(void)
-{
- extern u32 kvm_hypercall_start;
- struct device_node *hyper_node;
- u32 *insts;
- int len, i;
-
- hyper_node = of_find_node_by_path("/hypervisor");
- if (!hyper_node)
- return -1;
-
- insts = (u32*)of_get_property(hyper_node, "hcall-instructions", &len);
- if (len % 4)
- return -1;
- if (len > (4 * 4))
- return -1;
-
- for (i = 0; i < (len / 4); i++)
- kvm_patch_ins(&(&kvm_hypercall_start)[i], insts[i]);
-
- return 0;
-}
-
static __init void kvm_free_tmp(void)
{
unsigned long start, end;
@@ -811,7 +789,7 @@ static int __init kvm_guest_init(void)
if (!kvm_para_available())
goto free_tmp;
- if (kvm_para_setup())
+ if (!epapr_paravirt_enabled)
goto free_tmp;
if (kvm_para_has_feature(KVM_FEATURE_MAGIC_PAGE))
diff --git a/arch/powerpc/kernel/kvm_emul.S b/arch/powerpc/kernel/kvm_emul.S
index 3dfa890..e100ff3 100644
--- a/arch/powerpc/kernel/kvm_emul.S
+++ b/arch/powerpc/kernel/kvm_emul.S
@@ -24,16 +24,6 @@
#include <asm/page.h>
#include <asm/asm-offsets.h>
-/* Hypercall entry point. Will be patched with device tree instructions. */
-
-.global kvm_hypercall_start
-kvm_hypercall_start:
- li r3, -1
- nop
- nop
- nop
- blr
-
#define KVM_MAGIC_PAGE (-4096)
#ifdef CONFIG_64BIT
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index b9ba861..e0c0834 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -25,6 +25,7 @@ source "arch/powerpc/platforms/wsp/Kconfig"
config KVM_GUEST
bool "KVM Guest support"
default n
+ select EPAPR_PARAVIRT
---help---
This option enables various optimizations for running under the KVM
hypervisor. Overhead for the kernel when not running inside KVM should
@@ -32,6 +33,14 @@ config KVM_GUEST
In case of doubt, say Y
+config EPAPR_PARAVIRT
+ bool "ePAPR para-virtualization support"
+ default n
+ help
+ Enables ePAPR para-virtualization support for guests.
+
+ In case of doubt, say Y
+
config PPC_NATIVE
bool
depends on 6xx || PPC64
--
1.7.3.4
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH 4/4] KVM: PPC: epapr: Update other hypercall invoking
2012-03-07 22:31 [PATCH v8 0/4] KVM: PPC: Add ePAPR idle hcall support Stuart Yoder
` (2 preceding siblings ...)
2012-03-07 22:31 ` [PATCH 3/4] KVM: PPC: epapr: install ev_idle hcall for e500 guest Stuart Yoder
@ 2012-03-07 22:31 ` Stuart Yoder
3 siblings, 0 replies; 6+ messages in thread
From: Stuart Yoder @ 2012-03-07 22:31 UTC (permalink / raw)
To: agraf, kvm-ppc, kvm
From: Liu Yu-B13201 <Yu.Liu@freescale.com>
Discard the old way that invoke hypercall,
instead, use epapr paravirt.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
[stuart.yoder@freescale.com: kconfig fixes]
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
---
-v8: no changes
arch/powerpc/include/asm/epapr_hcalls.h | 22 +++++++++---------
arch/powerpc/include/asm/fsl_hcalls.h | 36 +++++++++++++++---------------
arch/powerpc/platforms/Kconfig | 1 +
drivers/tty/Kconfig | 1 +
drivers/virt/Kconfig | 1 +
5 files changed, 32 insertions(+), 29 deletions(-)
diff --git a/arch/powerpc/include/asm/epapr_hcalls.h b/arch/powerpc/include/asm/epapr_hcalls.h
index 78460ac..b95758d 100644
--- a/arch/powerpc/include/asm/epapr_hcalls.h
+++ b/arch/powerpc/include/asm/epapr_hcalls.h
@@ -189,7 +189,7 @@ static inline unsigned int ev_int_set_config(unsigned int interrupt,
r5 = priority;
r6 = destination;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6)
: : EV_HCALL_CLOBBERS4
);
@@ -218,7 +218,7 @@ static inline unsigned int ev_int_get_config(unsigned int interrupt,
r11 = EV_HCALL_TOKEN(EV_INT_GET_CONFIG);
r3 = interrupt;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "=r" (r4), "=r" (r5), "=r" (r6)
: : EV_HCALL_CLOBBERS4
);
@@ -248,7 +248,7 @@ static inline unsigned int ev_int_set_mask(unsigned int interrupt,
r3 = interrupt;
r4 = mask;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "+r" (r4)
: : EV_HCALL_CLOBBERS2
);
@@ -273,7 +273,7 @@ static inline unsigned int ev_int_get_mask(unsigned int interrupt,
r11 = EV_HCALL_TOKEN(EV_INT_GET_MASK);
r3 = interrupt;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "=r" (r4)
: : EV_HCALL_CLOBBERS2
);
@@ -301,7 +301,7 @@ static inline unsigned int ev_int_eoi(unsigned int interrupt)
r11 = EV_HCALL_TOKEN(EV_INT_EOI);
r3 = interrupt;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3)
: : EV_HCALL_CLOBBERS1
);
@@ -340,7 +340,7 @@ static inline unsigned int ev_byte_channel_send(unsigned int handle,
r7 = be32_to_cpu(p[2]);
r8 = be32_to_cpu(p[3]);
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3),
"+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7), "+r" (r8)
: : EV_HCALL_CLOBBERS6
@@ -379,7 +379,7 @@ static inline unsigned int ev_byte_channel_receive(unsigned int handle,
r3 = handle;
r4 = *count;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "+r" (r4),
"=r" (r5), "=r" (r6), "=r" (r7), "=r" (r8)
: : EV_HCALL_CLOBBERS6
@@ -417,7 +417,7 @@ static inline unsigned int ev_byte_channel_poll(unsigned int handle,
r11 = EV_HCALL_TOKEN(EV_BYTE_CHANNEL_POLL);
r3 = handle;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "=r" (r4), "=r" (r5)
: : EV_HCALL_CLOBBERS3
);
@@ -450,7 +450,7 @@ static inline unsigned int ev_int_iack(unsigned int handle,
r11 = EV_HCALL_TOKEN(EV_INT_IACK);
r3 = handle;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "=r" (r4)
: : EV_HCALL_CLOBBERS2
);
@@ -474,7 +474,7 @@ static inline unsigned int ev_doorbell_send(unsigned int handle)
r11 = EV_HCALL_TOKEN(EV_DOORBELL_SEND);
r3 = handle;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3)
: : EV_HCALL_CLOBBERS1
);
@@ -494,7 +494,7 @@ static inline unsigned int ev_idle(void)
r11 = EV_HCALL_TOKEN(EV_IDLE);
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "=r" (r3)
: : EV_HCALL_CLOBBERS1
);
diff --git a/arch/powerpc/include/asm/fsl_hcalls.h b/arch/powerpc/include/asm/fsl_hcalls.h
index 922d9b5..3abb583 100644
--- a/arch/powerpc/include/asm/fsl_hcalls.h
+++ b/arch/powerpc/include/asm/fsl_hcalls.h
@@ -96,7 +96,7 @@ static inline unsigned int fh_send_nmi(unsigned int vcpu_mask)
r11 = FH_HCALL_TOKEN(FH_SEND_NMI);
r3 = vcpu_mask;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3)
: : EV_HCALL_CLOBBERS1
);
@@ -151,7 +151,7 @@ static inline unsigned int fh_partition_get_dtprop(int handle,
r9 = (uint32_t)propvalue_addr;
r10 = *propvalue_len;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11),
"+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7),
"+r" (r8), "+r" (r9), "+r" (r10)
@@ -205,7 +205,7 @@ static inline unsigned int fh_partition_set_dtprop(int handle,
r9 = (uint32_t)propvalue_addr;
r10 = propvalue_len;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11),
"+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7),
"+r" (r8), "+r" (r9), "+r" (r10)
@@ -229,7 +229,7 @@ static inline unsigned int fh_partition_restart(unsigned int partition)
r11 = FH_HCALL_TOKEN(FH_PARTITION_RESTART);
r3 = partition;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3)
: : EV_HCALL_CLOBBERS1
);
@@ -262,7 +262,7 @@ static inline unsigned int fh_partition_get_status(unsigned int partition,
r11 = FH_HCALL_TOKEN(FH_PARTITION_GET_STATUS);
r3 = partition;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "=r" (r4)
: : EV_HCALL_CLOBBERS2
);
@@ -295,7 +295,7 @@ static inline unsigned int fh_partition_start(unsigned int partition,
r4 = entry_point;
r5 = load;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "+r" (r4), "+r" (r5)
: : EV_HCALL_CLOBBERS3
);
@@ -317,7 +317,7 @@ static inline unsigned int fh_partition_stop(unsigned int partition)
r11 = FH_HCALL_TOKEN(FH_PARTITION_STOP);
r3 = partition;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3)
: : EV_HCALL_CLOBBERS1
);
@@ -376,7 +376,7 @@ static inline unsigned int fh_partition_memcpy(unsigned int source,
#endif
r7 = count;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11),
"+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7)
: : EV_HCALL_CLOBBERS5
@@ -399,7 +399,7 @@ static inline unsigned int fh_dma_enable(unsigned int liodn)
r11 = FH_HCALL_TOKEN(FH_DMA_ENABLE);
r3 = liodn;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3)
: : EV_HCALL_CLOBBERS1
);
@@ -421,7 +421,7 @@ static inline unsigned int fh_dma_disable(unsigned int liodn)
r11 = FH_HCALL_TOKEN(FH_DMA_DISABLE);
r3 = liodn;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3)
: : EV_HCALL_CLOBBERS1
);
@@ -447,7 +447,7 @@ static inline unsigned int fh_vmpic_get_msir(unsigned int interrupt,
r11 = FH_HCALL_TOKEN(FH_VMPIC_GET_MSIR);
r3 = interrupt;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "=r" (r4)
: : EV_HCALL_CLOBBERS2
);
@@ -469,7 +469,7 @@ static inline unsigned int fh_system_reset(void)
r11 = FH_HCALL_TOKEN(FH_SYSTEM_RESET);
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "=r" (r3)
: : EV_HCALL_CLOBBERS1
);
@@ -506,7 +506,7 @@ static inline unsigned int fh_err_get_info(int queue, uint32_t *bufsize,
r6 = addr_lo;
r7 = peek;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6),
"+r" (r7)
: : EV_HCALL_CLOBBERS5
@@ -542,7 +542,7 @@ static inline unsigned int fh_get_core_state(unsigned int handle,
r3 = handle;
r4 = vcpu;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "+r" (r4)
: : EV_HCALL_CLOBBERS2
);
@@ -572,7 +572,7 @@ static inline unsigned int fh_enter_nap(unsigned int handle, unsigned int vcpu)
r3 = handle;
r4 = vcpu;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "+r" (r4)
: : EV_HCALL_CLOBBERS2
);
@@ -597,7 +597,7 @@ static inline unsigned int fh_exit_nap(unsigned int handle, unsigned int vcpu)
r3 = handle;
r4 = vcpu;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3), "+r" (r4)
: : EV_HCALL_CLOBBERS2
);
@@ -618,7 +618,7 @@ static inline unsigned int fh_claim_device(unsigned int handle)
r11 = FH_HCALL_TOKEN(FH_CLAIM_DEVICE);
r3 = handle;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3)
: : EV_HCALL_CLOBBERS1
);
@@ -645,7 +645,7 @@ static inline unsigned int fh_partition_stop_dma(unsigned int handle)
r11 = FH_HCALL_TOKEN(FH_PARTITION_STOP_DMA);
r3 = handle;
- __asm__ __volatile__ ("sc 1"
+ asm volatile("bl epapr_hypercall_start"
: "+r" (r11), "+r" (r3)
: : EV_HCALL_CLOBBERS1
);
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index e0c0834..81e60e0 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -90,6 +90,7 @@ config MPIC
config PPC_EPAPR_HV_PIC
bool
default n
+ select EPAPR_PARAVIRT
config MPIC_WEIRD
bool
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index f1ea59b..9ac4bc6 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -354,6 +354,7 @@ config TRACE_SINK
config PPC_EPAPR_HV_BYTECHAN
tristate "ePAPR hypervisor byte channel driver"
depends on PPC
+ select EPAPR_PARAVIRT
help
This driver creates /dev entries for each ePAPR hypervisor byte
channel, thereby allowing applications to communicate with byte
diff --git a/drivers/virt/Kconfig b/drivers/virt/Kconfig
index 2dcdbc9..99ebdde 100644
--- a/drivers/virt/Kconfig
+++ b/drivers/virt/Kconfig
@@ -15,6 +15,7 @@ if VIRT_DRIVERS
config FSL_HV_MANAGER
tristate "Freescale hypervisor management driver"
depends on FSL_SOC
+ select EPAPR_PARAVIRT
help
The Freescale hypervisor management driver provides several services
to drivers and applications related to the Freescale hypervisor:
--
1.7.3.4
^ permalink raw reply related [flat|nested] 6+ messages in thread