From: Stefano Stabellini <stefano.stabellini-mvvWK6WmYclDPfheJLI6IQ@public.gmane.org>
To: arnd-r2nGTMty4D4@public.gmane.org
Cc: xen-devel-GuqFBffKawuULHF6PoxzQEEOCMrvLtNR@public.gmane.org,
linaro-dev-cunTk1MwBs8s++Sfvej+rw@public.gmane.org,
Ian.Campbell-Sxgqhf6Nn4DQT0dZR+AlfA@public.gmane.org,
konrad.wilk-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org,
tim-LM2mM/qkH7s@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: [PATCH v5 01/17] arm: initial Xen support
Date: Mon, 17 Sep 2012 18:38:47 +0100 [thread overview]
Message-ID: <1347903543-2135-1-git-send-email-stefano.stabellini@eu.citrix.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1209171215490.29232-7Z66fg9igcxYtxbxJUhB2Dgeux46jI+i@public.gmane.org>
- Basic hypervisor.h and interface.h definitions.
- Skeleton enlighten.c, set xen_start_info to an empty struct.
- Make xen_initial_domain dependent on the SIF_PRIVILIGED_BIT.
The new code only compiles when CONFIG_XEN is set, that is going to be
added to arch/arm/Kconfig in patch #11 "xen/arm: introduce CONFIG_XEN on
ARM".
Changes in v3:
- improve comments.
Signed-off-by: Stefano Stabellini <stefano.stabellini-mvvWK6WmYclDPfheJLI6IQ@public.gmane.org>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
---
arch/arm/Makefile | 1 +
arch/arm/include/asm/hypervisor.h | 6 +++
arch/arm/include/asm/xen/hypervisor.h | 19 +++++++++
arch/arm/include/asm/xen/interface.h | 69 +++++++++++++++++++++++++++++++++
arch/arm/xen/Makefile | 1 +
arch/arm/xen/enlighten.c | 35 +++++++++++++++++
include/xen/xen.h | 2 +-
7 files changed, 132 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/include/asm/hypervisor.h
create mode 100644 arch/arm/include/asm/xen/hypervisor.h
create mode 100644 arch/arm/include/asm/xen/interface.h
create mode 100644 arch/arm/xen/Makefile
create mode 100644 arch/arm/xen/enlighten.c
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 30eae87..f42968a 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -251,6 +251,7 @@ endif
core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/
core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ)
core-$(CONFIG_VFP) += arch/arm/vfp/
+core-$(CONFIG_XEN) += arch/arm/xen/
# If we have a machine-specific directory, then include it in the build.
core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
diff --git a/arch/arm/include/asm/hypervisor.h b/arch/arm/include/asm/hypervisor.h
new file mode 100644
index 0000000..b90d9e5
--- /dev/null
+++ b/arch/arm/include/asm/hypervisor.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_ARM_HYPERVISOR_H
+#define _ASM_ARM_HYPERVISOR_H
+
+#include <asm/xen/hypervisor.h>
+
+#endif
diff --git a/arch/arm/include/asm/xen/hypervisor.h b/arch/arm/include/asm/xen/hypervisor.h
new file mode 100644
index 0000000..d7ab99a
--- /dev/null
+++ b/arch/arm/include/asm/xen/hypervisor.h
@@ -0,0 +1,19 @@
+#ifndef _ASM_ARM_XEN_HYPERVISOR_H
+#define _ASM_ARM_XEN_HYPERVISOR_H
+
+extern struct shared_info *HYPERVISOR_shared_info;
+extern struct start_info *xen_start_info;
+
+/* Lazy mode for batching updates / context switch */
+enum paravirt_lazy_mode {
+ PARAVIRT_LAZY_NONE,
+ PARAVIRT_LAZY_MMU,
+ PARAVIRT_LAZY_CPU,
+};
+
+static inline enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
+{
+ return PARAVIRT_LAZY_NONE;
+}
+
+#endif /* _ASM_ARM_XEN_HYPERVISOR_H */
diff --git a/arch/arm/include/asm/xen/interface.h b/arch/arm/include/asm/xen/interface.h
new file mode 100644
index 0000000..74c72b5
--- /dev/null
+++ b/arch/arm/include/asm/xen/interface.h
@@ -0,0 +1,69 @@
+/******************************************************************************
+ * Guest OS interface to ARM Xen.
+ *
+ * Stefano Stabellini <stefano.stabellini-mvvWK6WmYclDPfheJLI6IQ@public.gmane.org>, Citrix, 2012
+ */
+
+#ifndef _ASM_ARM_XEN_INTERFACE_H
+#define _ASM_ARM_XEN_INTERFACE_H
+
+#include <linux/types.h>
+
+#define __DEFINE_GUEST_HANDLE(name, type) \
+ typedef type * __guest_handle_ ## name
+
+#define DEFINE_GUEST_HANDLE_STRUCT(name) \
+ __DEFINE_GUEST_HANDLE(name, struct name)
+#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
+#define GUEST_HANDLE(name) __guest_handle_ ## name
+
+#define set_xen_guest_handle(hnd, val) \
+ do { \
+ if (sizeof(hnd) == 8) \
+ *(uint64_t *)&(hnd) = 0; \
+ (hnd) = val; \
+ } while (0)
+
+#ifndef __ASSEMBLY__
+/* Explicitly size integers that represent pfns in the interface with
+ * Xen so that we can have one ABI that works for 32 and 64 bit guests. */
+typedef uint64_t xen_pfn_t;
+/* Guest handles for primitive C types. */
+__DEFINE_GUEST_HANDLE(uchar, unsigned char);
+__DEFINE_GUEST_HANDLE(uint, unsigned int);
+__DEFINE_GUEST_HANDLE(ulong, unsigned long);
+DEFINE_GUEST_HANDLE(char);
+DEFINE_GUEST_HANDLE(int);
+DEFINE_GUEST_HANDLE(long);
+DEFINE_GUEST_HANDLE(void);
+DEFINE_GUEST_HANDLE(uint64_t);
+DEFINE_GUEST_HANDLE(uint32_t);
+DEFINE_GUEST_HANDLE(xen_pfn_t);
+
+/* Maximum number of virtual CPUs in multi-processor guests. */
+#define MAX_VIRT_CPUS 1
+
+struct arch_vcpu_info { };
+struct arch_shared_info { };
+
+/* TODO: Move pvclock definitions some place arch independent */
+struct pvclock_vcpu_time_info {
+ u32 version;
+ u32 pad0;
+ u64 tsc_timestamp;
+ u64 system_time;
+ u32 tsc_to_system_mul;
+ s8 tsc_shift;
+ u8 flags;
+ u8 pad[2];
+} __attribute__((__packed__)); /* 32 bytes */
+
+/* It is OK to have a 12 bytes struct with no padding because it is packed */
+struct pvclock_wall_clock {
+ u32 version;
+ u32 sec;
+ u32 nsec;
+} __attribute__((__packed__));
+#endif
+
+#endif /* _ASM_ARM_XEN_INTERFACE_H */
diff --git a/arch/arm/xen/Makefile b/arch/arm/xen/Makefile
new file mode 100644
index 0000000..0bad594
--- /dev/null
+++ b/arch/arm/xen/Makefile
@@ -0,0 +1 @@
+obj-y := enlighten.o
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
new file mode 100644
index 0000000..c535540
--- /dev/null
+++ b/arch/arm/xen/enlighten.c
@@ -0,0 +1,35 @@
+#include <xen/xen.h>
+#include <xen/interface/xen.h>
+#include <xen/interface/memory.h>
+#include <xen/platform_pci.h>
+#include <asm/xen/hypervisor.h>
+#include <asm/xen/hypercall.h>
+#include <linux/module.h>
+
+struct start_info _xen_start_info;
+struct start_info *xen_start_info = &_xen_start_info;
+EXPORT_SYMBOL_GPL(xen_start_info);
+
+enum xen_domain_type xen_domain_type = XEN_NATIVE;
+EXPORT_SYMBOL_GPL(xen_domain_type);
+
+struct shared_info xen_dummy_shared_info;
+struct shared_info *HYPERVISOR_shared_info = (void *)&xen_dummy_shared_info;
+
+DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
+
+/* TODO: to be removed */
+__read_mostly int xen_have_vector_callback;
+EXPORT_SYMBOL_GPL(xen_have_vector_callback);
+
+int xen_platform_pci_unplug = XEN_UNPLUG_ALL;
+EXPORT_SYMBOL_GPL(xen_platform_pci_unplug);
+
+int xen_remap_domain_mfn_range(struct vm_area_struct *vma,
+ unsigned long addr,
+ unsigned long mfn, int nr,
+ pgprot_t prot, unsigned domid)
+{
+ return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_range);
diff --git a/include/xen/xen.h b/include/xen/xen.h
index a164024..2c0d3a5 100644
--- a/include/xen/xen.h
+++ b/include/xen/xen.h
@@ -23,7 +23,7 @@ extern enum xen_domain_type xen_domain_type;
#include <xen/interface/xen.h>
#include <asm/xen/hypervisor.h>
-#define xen_initial_domain() (xen_pv_domain() && \
+#define xen_initial_domain() (xen_domain() && \
xen_start_info->flags & SIF_INITDOMAIN)
#else /* !CONFIG_XEN_DOM0 */
#define xen_initial_domain() (0)
--
1.7.2.5
next prev parent reply other threads:[~2012-09-17 17:38 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-17 17:37 [PATCH v5 00/17] Introduce Xen support on ARM (based on 3.6-rc5) Stefano Stabellini
2012-09-17 17:39 ` [PATCH v5 15/17] xen/arm: compile blkfront and blkback Stefano Stabellini
[not found] ` <alpine.DEB.2.02.1209171215490.29232-7Z66fg9igcxYtxbxJUhB2Dgeux46jI+i@public.gmane.org>
2012-09-17 17:38 ` Stefano Stabellini [this message]
2012-09-17 17:38 ` [PATCH v5 02/17] xen/arm: hypercalls Stefano Stabellini
2012-09-17 17:38 ` [PATCH v5 03/17] xen/arm: page.h definitions Stefano Stabellini
2012-09-17 17:38 ` [PATCH v5 04/17] xen/arm: sync_bitops Stefano Stabellini
2012-09-17 17:38 ` [PATCH v5 05/17] xen/arm: empty implementation of grant_table arch specific functions Stefano Stabellini
2012-09-17 17:38 ` [PATCH v5 06/17] docs: Xen ARM DT bindings Stefano Stabellini
2012-09-18 2:59 ` Rob Herring
2012-09-17 17:38 ` [PATCH v5 07/17] xen/arm: Xen detection and shared_info page mapping Stefano Stabellini
2012-09-17 17:38 ` [PATCH v5 08/17] xen/arm: Introduce xen_ulong_t for unsigned long Stefano Stabellini
2012-09-17 17:38 ` [PATCH v5 09/17] xen: do not compile manage, balloon, pci, acpi, pcpu and cpu_hotplug on ARM Stefano Stabellini
2012-09-17 17:38 ` [PATCH v5 10/17] xen/arm: introduce CONFIG_XEN " Stefano Stabellini
2012-09-17 17:38 ` [PATCH v5 11/17] xen/arm: get privilege status Stefano Stabellini
2012-09-17 17:38 ` [PATCH v5 12/17] xen/arm: initialize grant_table on ARM Stefano Stabellini
2012-09-17 17:38 ` [PATCH v5 13/17] xen/arm: receive Xen events " Stefano Stabellini
2012-09-17 17:39 ` [PATCH v5 14/17] xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree Stefano Stabellini
2012-09-17 17:39 ` [PATCH v5 16/17] xen/arm: compile netback Stefano Stabellini
2012-09-17 17:39 ` [PATCH v5 17/17] MAINTAINERS: add myself as Xen ARM maintainer Stefano Stabellini
2012-09-18 12:34 ` [PATCH v5 00/17] Introduce Xen support on ARM (based on 3.6-rc5) Arnd Bergmann
[not found] ` <201209181234.29557.arnd-r2nGTMty4D4@public.gmane.org>
2012-09-18 13:53 ` Konrad Rzeszutek Wilk
2012-09-18 13:57 ` Stefano Stabellini
2012-09-18 14:37 ` Konrad Rzeszutek Wilk
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