* [PATCH 2/4] xen: move pv specific parts of arch/x86/xen/mmu.c to mmu_pv.c
2018-07-17 12:01 [PATCH 0/4] xen: various cleanups Juergen Gross
2018-07-17 12:01 ` [PATCH 1/4] xen: move pv irq related functions under CONFIG_XEN_PV umbrella Juergen Gross
@ 2018-07-17 12:01 ` Juergen Gross
2018-07-17 12:01 ` [PATCH 3/4] xen: link platform-pci-unplug.o only if CONFIG_XEN_PVHVM Juergen Gross
` (2 subsequent siblings)
4 siblings, 0 replies; 11+ messages in thread
From: Juergen Gross @ 2018-07-17 12:01 UTC (permalink / raw)
To: linux-kernel, xen-devel, x86
Cc: boris.ostrovsky, hpa, tglx, mingo, Juergen Gross
There are some PV specific functions in arch/x86/xen/mmu.c which can
be moved to mmu_pv.c. This in turn enables us to make multicalls.c
dependent on CONFIG_XEN_PV.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
arch/x86/xen/Makefile | 2 +-
arch/x86/xen/mmu.c | 186 -----------------------------------------
arch/x86/xen/mmu_pv.c | 138 ++++++++++++++++++++++++++++++
include/xen/interface/memory.h | 6 --
include/xen/xen-ops.h | 133 +++++++++++++++++++----------
5 files changed, 227 insertions(+), 238 deletions(-)
diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile
index f723b5aa8f74..a964f307a266 100644
--- a/arch/x86/xen/Makefile
+++ b/arch/x86/xen/Makefile
@@ -15,7 +15,6 @@ CFLAGS_enlighten_pv.o := $(nostackp)
CFLAGS_mmu_pv.o := $(nostackp)
obj-y += enlighten.o
-obj-y += multicalls.o
obj-y += mmu.o
obj-y += time.o
obj-y += grant-table.o
@@ -34,6 +33,7 @@ obj-$(CONFIG_XEN_PV) += p2m.o
obj-$(CONFIG_XEN_PV) += enlighten_pv.o
obj-$(CONFIG_XEN_PV) += mmu_pv.o
obj-$(CONFIG_XEN_PV) += irq.o
+obj-$(CONFIG_XEN_PV) += multicalls.o
obj-$(CONFIG_XEN_PV) += xen-asm.o
obj-$(CONFIG_XEN_PV) += xen-asm_$(BITS).o
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 96fc2f0fdbfe..e0e13fe16d37 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -6,12 +6,6 @@
#include "multicalls.h"
#include "mmu.h"
-/*
- * Protects atomic reservation decrease/increase against concurrent increases.
- * Also protects non-atomic updates of current_pages and balloon lists.
- */
-DEFINE_SPINLOCK(xen_reservation_lock);
-
unsigned long arbitrary_virt_to_mfn(void *vaddr)
{
xmaddr_t maddr = arbitrary_virt_to_machine(vaddr);
@@ -42,186 +36,6 @@ xmaddr_t arbitrary_virt_to_machine(void *vaddr)
}
EXPORT_SYMBOL_GPL(arbitrary_virt_to_machine);
-static noinline void xen_flush_tlb_all(void)
-{
- struct mmuext_op *op;
- struct multicall_space mcs;
-
- preempt_disable();
-
- mcs = xen_mc_entry(sizeof(*op));
-
- op = mcs.args;
- op->cmd = MMUEXT_TLB_FLUSH_ALL;
- MULTI_mmuext_op(mcs.mc, op, 1, NULL, DOMID_SELF);
-
- xen_mc_issue(PARAVIRT_LAZY_MMU);
-
- preempt_enable();
-}
-
-#define REMAP_BATCH_SIZE 16
-
-struct remap_data {
- xen_pfn_t *pfn;
- bool contiguous;
- bool no_translate;
- pgprot_t prot;
- struct mmu_update *mmu_update;
-};
-
-static int remap_area_pfn_pte_fn(pte_t *ptep, pgtable_t token,
- unsigned long addr, void *data)
-{
- struct remap_data *rmd = data;
- pte_t pte = pte_mkspecial(mfn_pte(*rmd->pfn, rmd->prot));
-
- /*
- * If we have a contiguous range, just update the pfn itself,
- * else update pointer to be "next pfn".
- */
- if (rmd->contiguous)
- (*rmd->pfn)++;
- else
- rmd->pfn++;
-
- rmd->mmu_update->ptr = virt_to_machine(ptep).maddr;
- rmd->mmu_update->ptr |= rmd->no_translate ?
- MMU_PT_UPDATE_NO_TRANSLATE :
- MMU_NORMAL_PT_UPDATE;
- rmd->mmu_update->val = pte_val_ma(pte);
- rmd->mmu_update++;
-
- return 0;
-}
-
-static int do_remap_pfn(struct vm_area_struct *vma,
- unsigned long addr,
- xen_pfn_t *pfn, int nr,
- int *err_ptr, pgprot_t prot,
- unsigned int domid,
- bool no_translate,
- struct page **pages)
-{
- int err = 0;
- struct remap_data rmd;
- struct mmu_update mmu_update[REMAP_BATCH_SIZE];
- unsigned long range;
- int mapped = 0;
-
- BUG_ON(!((vma->vm_flags & (VM_PFNMAP | VM_IO)) == (VM_PFNMAP | VM_IO)));
-
- rmd.pfn = pfn;
- rmd.prot = prot;
- /*
- * We use the err_ptr to indicate if there we are doing a contiguous
- * mapping or a discontigious mapping.
- */
- rmd.contiguous = !err_ptr;
- rmd.no_translate = no_translate;
-
- while (nr) {
- int index = 0;
- int done = 0;
- int batch = min(REMAP_BATCH_SIZE, nr);
- int batch_left = batch;
- range = (unsigned long)batch << PAGE_SHIFT;
-
- rmd.mmu_update = mmu_update;
- err = apply_to_page_range(vma->vm_mm, addr, range,
- remap_area_pfn_pte_fn, &rmd);
- if (err)
- goto out;
-
- /* We record the error for each page that gives an error, but
- * continue mapping until the whole set is done */
- do {
- int i;
-
- err = HYPERVISOR_mmu_update(&mmu_update[index],
- batch_left, &done, domid);
-
- /*
- * @err_ptr may be the same buffer as @gfn, so
- * only clear it after each chunk of @gfn is
- * used.
- */
- if (err_ptr) {
- for (i = index; i < index + done; i++)
- err_ptr[i] = 0;
- }
- if (err < 0) {
- if (!err_ptr)
- goto out;
- err_ptr[i] = err;
- done++; /* Skip failed frame. */
- } else
- mapped += done;
- batch_left -= done;
- index += done;
- } while (batch_left);
-
- nr -= batch;
- addr += range;
- if (err_ptr)
- err_ptr += batch;
- cond_resched();
- }
-out:
-
- xen_flush_tlb_all();
-
- return err < 0 ? err : mapped;
-}
-
-int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
- unsigned long addr,
- xen_pfn_t gfn, int nr,
- pgprot_t prot, unsigned domid,
- struct page **pages)
-{
- if (xen_feature(XENFEAT_auto_translated_physmap))
- return -EOPNOTSUPP;
-
- return do_remap_pfn(vma, addr, &gfn, nr, NULL, prot, domid, false,
- pages);
-}
-EXPORT_SYMBOL_GPL(xen_remap_domain_gfn_range);
-
-int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
- unsigned long addr,
- xen_pfn_t *gfn, int nr,
- int *err_ptr, pgprot_t prot,
- unsigned domid, struct page **pages)
-{
- if (xen_feature(XENFEAT_auto_translated_physmap))
- return xen_xlate_remap_gfn_array(vma, addr, gfn, nr, err_ptr,
- prot, domid, pages);
-
- /* We BUG_ON because it's a programmer error to pass a NULL err_ptr,
- * and the consequences later is quite hard to detect what the actual
- * cause of "wrong memory was mapped in".
- */
- BUG_ON(err_ptr == NULL);
- return do_remap_pfn(vma, addr, gfn, nr, err_ptr, prot, domid,
- false, pages);
-}
-EXPORT_SYMBOL_GPL(xen_remap_domain_gfn_array);
-
-int xen_remap_domain_mfn_array(struct vm_area_struct *vma,
- unsigned long addr,
- xen_pfn_t *mfn, int nr,
- int *err_ptr, pgprot_t prot,
- unsigned int domid, struct page **pages)
-{
- if (xen_feature(XENFEAT_auto_translated_physmap))
- return -EOPNOTSUPP;
-
- return do_remap_pfn(vma, addr, mfn, nr, err_ptr, prot, domid,
- true, pages);
-}
-EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_array);
-
/* Returns: 0 success */
int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
int nr, struct page **pages)
diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
index 2c30cabfda90..ea4b2f69dfce 100644
--- a/arch/x86/xen/mmu_pv.c
+++ b/arch/x86/xen/mmu_pv.c
@@ -98,6 +98,12 @@ static pud_t level3_user_vsyscall[PTRS_PER_PUD] __page_aligned_bss;
#endif /* CONFIG_X86_64 */
/*
+ * Protects atomic reservation decrease/increase against concurrent increases.
+ * Also protects non-atomic updates of current_pages and balloon lists.
+ */
+DEFINE_SPINLOCK(xen_reservation_lock);
+
+/*
* Note about cr3 (pagetable base) values:
*
* xen_cr3 contains the current logical cr3 value; it contains the
@@ -2663,6 +2669,138 @@ void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order)
}
EXPORT_SYMBOL_GPL(xen_destroy_contiguous_region);
+static noinline void xen_flush_tlb_all(void)
+{
+ struct mmuext_op *op;
+ struct multicall_space mcs;
+
+ preempt_disable();
+
+ mcs = xen_mc_entry(sizeof(*op));
+
+ op = mcs.args;
+ op->cmd = MMUEXT_TLB_FLUSH_ALL;
+ MULTI_mmuext_op(mcs.mc, op, 1, NULL, DOMID_SELF);
+
+ xen_mc_issue(PARAVIRT_LAZY_MMU);
+
+ preempt_enable();
+}
+
+#define REMAP_BATCH_SIZE 16
+
+struct remap_data {
+ xen_pfn_t *pfn;
+ bool contiguous;
+ bool no_translate;
+ pgprot_t prot;
+ struct mmu_update *mmu_update;
+};
+
+static int remap_area_pfn_pte_fn(pte_t *ptep, pgtable_t token,
+ unsigned long addr, void *data)
+{
+ struct remap_data *rmd = data;
+ pte_t pte = pte_mkspecial(mfn_pte(*rmd->pfn, rmd->prot));
+
+ /*
+ * If we have a contiguous range, just update the pfn itself,
+ * else update pointer to be "next pfn".
+ */
+ if (rmd->contiguous)
+ (*rmd->pfn)++;
+ else
+ rmd->pfn++;
+
+ rmd->mmu_update->ptr = virt_to_machine(ptep).maddr;
+ rmd->mmu_update->ptr |= rmd->no_translate ?
+ MMU_PT_UPDATE_NO_TRANSLATE :
+ MMU_NORMAL_PT_UPDATE;
+ rmd->mmu_update->val = pte_val_ma(pte);
+ rmd->mmu_update++;
+
+ return 0;
+}
+
+int xen_remap_pfn(struct vm_area_struct *vma, unsigned long addr,
+ xen_pfn_t *pfn, int nr, int *err_ptr, pgprot_t prot,
+ unsigned int domid, bool no_translate, struct page **pages)
+{
+ int err = 0;
+ struct remap_data rmd;
+ struct mmu_update mmu_update[REMAP_BATCH_SIZE];
+ unsigned long range;
+ int mapped = 0;
+
+ BUG_ON(!((vma->vm_flags & (VM_PFNMAP | VM_IO)) == (VM_PFNMAP | VM_IO)));
+
+ rmd.pfn = pfn;
+ rmd.prot = prot;
+ /*
+ * We use the err_ptr to indicate if there we are doing a contiguous
+ * mapping or a discontigious mapping.
+ */
+ rmd.contiguous = !err_ptr;
+ rmd.no_translate = no_translate;
+
+ while (nr) {
+ int index = 0;
+ int done = 0;
+ int batch = min(REMAP_BATCH_SIZE, nr);
+ int batch_left = batch;
+
+ range = (unsigned long)batch << PAGE_SHIFT;
+
+ rmd.mmu_update = mmu_update;
+ err = apply_to_page_range(vma->vm_mm, addr, range,
+ remap_area_pfn_pte_fn, &rmd);
+ if (err)
+ goto out;
+
+ /*
+ * We record the error for each page that gives an error, but
+ * continue mapping until the whole set is done
+ */
+ do {
+ int i;
+
+ err = HYPERVISOR_mmu_update(&mmu_update[index],
+ batch_left, &done, domid);
+
+ /*
+ * @err_ptr may be the same buffer as @gfn, so
+ * only clear it after each chunk of @gfn is
+ * used.
+ */
+ if (err_ptr) {
+ for (i = index; i < index + done; i++)
+ err_ptr[i] = 0;
+ }
+ if (err < 0) {
+ if (!err_ptr)
+ goto out;
+ err_ptr[i] = err;
+ done++; /* Skip failed frame. */
+ } else
+ mapped += done;
+ batch_left -= done;
+ index += done;
+ } while (batch_left);
+
+ nr -= batch;
+ addr += range;
+ if (err_ptr)
+ err_ptr += batch;
+ cond_resched();
+ }
+out:
+
+ xen_flush_tlb_all();
+
+ return err < 0 ? err : mapped;
+}
+EXPORT_SYMBOL_GPL(xen_remap_pfn);
+
#ifdef CONFIG_KEXEC_CORE
phys_addr_t paddr_vmcoreinfo_note(void)
{
diff --git a/include/xen/interface/memory.h b/include/xen/interface/memory.h
index 4c5751c26f87..447004861f00 100644
--- a/include/xen/interface/memory.h
+++ b/include/xen/interface/memory.h
@@ -245,12 +245,6 @@ DEFINE_GUEST_HANDLE_STRUCT(xen_memory_map);
/*
- * Prevent the balloon driver from changing the memory reservation
- * during a driver critical region.
- */
-extern spinlock_t xen_reservation_lock;
-
-/*
* Unmaps the page appearing at a particular GPFN from the specified guest's
* pseudophysical address space.
* arg == addr of xen_remove_from_physmap_t.
diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h
index fd18c974a619..18803ff76e27 100644
--- a/include/xen/xen-ops.h
+++ b/include/xen/xen-ops.h
@@ -5,6 +5,7 @@
#include <linux/percpu.h>
#include <linux/notifier.h>
#include <linux/efi.h>
+#include <xen/features.h>
#include <asm/xen/interface.h>
#include <xen/interface/vcpu.h>
@@ -47,6 +48,10 @@ int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
dma_addr_t *dma_handle);
void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
+
+int xen_remap_pfn(struct vm_area_struct *vma, unsigned long addr,
+ xen_pfn_t *pfn, int nr, int *err_ptr, pgprot_t prot,
+ unsigned int domid, bool no_translate, struct page **pages);
#else
static inline int xen_create_contiguous_region(phys_addr_t pstart,
unsigned int order,
@@ -58,10 +63,50 @@ static inline int xen_create_contiguous_region(phys_addr_t pstart,
static inline void xen_destroy_contiguous_region(phys_addr_t pstart,
unsigned int order) { }
+
+static inline int xen_remap_pfn(struct vm_area_struct *vma, unsigned long addr,
+ xen_pfn_t *pfn, int nr, int *err_ptr,
+ pgprot_t prot, unsigned int domid,
+ bool no_translate, struct page **pages)
+{
+ BUG();
+ return 0;
+}
#endif
struct vm_area_struct;
+#ifdef CONFIG_XEN_AUTO_XLATE
+int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
+ unsigned long addr,
+ xen_pfn_t *gfn, int nr,
+ int *err_ptr, pgprot_t prot,
+ unsigned int domid,
+ struct page **pages);
+int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
+ int nr, struct page **pages);
+#else
+/*
+ * These two functions are called from arch/x86/xen/mmu.c and so stubs
+ * are needed for a configuration not specifying CONFIG_XEN_AUTO_XLATE.
+ */
+static inline int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
+ unsigned long addr,
+ xen_pfn_t *gfn, int nr,
+ int *err_ptr, pgprot_t prot,
+ unsigned int domid,
+ struct page **pages)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
+ int nr, struct page **pages)
+{
+ return -EOPNOTSUPP;
+}
+#endif
+
/*
* xen_remap_domain_gfn_array() - map an array of foreign frames by gfn
* @vma: VMA to map the pages into
@@ -79,12 +124,25 @@ struct vm_area_struct;
* Returns the number of successfully mapped frames, or a -ve error
* code.
*/
-int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
- unsigned long addr,
- xen_pfn_t *gfn, int nr,
- int *err_ptr, pgprot_t prot,
- unsigned domid,
- struct page **pages);
+static inline int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
+ unsigned long addr,
+ xen_pfn_t *gfn, int nr,
+ int *err_ptr, pgprot_t prot,
+ unsigned int domid,
+ struct page **pages)
+{
+ if (xen_feature(XENFEAT_auto_translated_physmap))
+ return xen_xlate_remap_gfn_array(vma, addr, gfn, nr, err_ptr,
+ prot, domid, pages);
+
+ /* We BUG_ON because it's a programmer error to pass a NULL err_ptr,
+ * and the consequences later is quite hard to detect what the actual
+ * cause of "wrong memory was mapped in".
+ */
+ BUG_ON(err_ptr == NULL);
+ return xen_remap_pfn(vma, addr, gfn, nr, err_ptr, prot, domid,
+ false, pages);
+}
/*
* xen_remap_domain_mfn_array() - map an array of foreign frames by mfn
@@ -103,10 +161,18 @@ int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
* Returns the number of successfully mapped frames, or a -ve error
* code.
*/
-int xen_remap_domain_mfn_array(struct vm_area_struct *vma,
- unsigned long addr, xen_pfn_t *mfn, int nr,
- int *err_ptr, pgprot_t prot,
- unsigned int domid, struct page **pages);
+static inline int xen_remap_domain_mfn_array(struct vm_area_struct *vma,
+ unsigned long addr, xen_pfn_t *mfn,
+ int nr, int *err_ptr,
+ pgprot_t prot, unsigned int domid,
+ struct page **pages)
+{
+ if (xen_feature(XENFEAT_auto_translated_physmap))
+ return -EOPNOTSUPP;
+
+ return xen_remap_pfn(vma, addr, mfn, nr, err_ptr, prot, domid,
+ true, pages);
+}
/* xen_remap_domain_gfn_range() - map a range of foreign frames
* @vma: VMA to map the pages into
@@ -120,44 +186,21 @@ int xen_remap_domain_mfn_array(struct vm_area_struct *vma,
* Returns the number of successfully mapped frames, or a -ve error
* code.
*/
-int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
- unsigned long addr,
- xen_pfn_t gfn, int nr,
- pgprot_t prot, unsigned domid,
- struct page **pages);
-int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
- int numpgs, struct page **pages);
-
-#ifdef CONFIG_XEN_AUTO_XLATE
-int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
- unsigned long addr,
- xen_pfn_t *gfn, int nr,
- int *err_ptr, pgprot_t prot,
- unsigned domid,
- struct page **pages);
-int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
- int nr, struct page **pages);
-#else
-/*
- * These two functions are called from arch/x86/xen/mmu.c and so stubs
- * are needed for a configuration not specifying CONFIG_XEN_AUTO_XLATE.
- */
-static inline int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
- unsigned long addr,
- xen_pfn_t *gfn, int nr,
- int *err_ptr, pgprot_t prot,
- unsigned int domid,
- struct page **pages)
+static inline int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
+ unsigned long addr,
+ xen_pfn_t gfn, int nr,
+ pgprot_t prot, unsigned int domid,
+ struct page **pages)
{
- return -EOPNOTSUPP;
-}
+ if (xen_feature(XENFEAT_auto_translated_physmap))
+ return -EOPNOTSUPP;
-static inline int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
- int nr, struct page **pages)
-{
- return -EOPNOTSUPP;
+ return xen_remap_pfn(vma, addr, &gfn, nr, NULL, prot, domid, false,
+ pages);
}
-#endif
+
+int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
+ int numpgs, struct page **pages);
int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr,
unsigned long nr_grant_frames);
--
2.13.7
^ permalink raw reply [flat|nested] 11+ messages in thread* [PATCH 4/4] xen: add SPDX identifier in arch/x86/xen files
2018-07-17 12:01 [PATCH 0/4] xen: various cleanups Juergen Gross
` (2 preceding siblings ...)
2018-07-17 12:01 ` [PATCH 3/4] xen: link platform-pci-unplug.o only if CONFIG_XEN_PVHVM Juergen Gross
@ 2018-07-17 12:01 ` Juergen Gross
2018-08-07 13:10 ` [PATCH 0/4] xen: various cleanups Juergen Gross
4 siblings, 0 replies; 11+ messages in thread
From: Juergen Gross @ 2018-07-17 12:01 UTC (permalink / raw)
To: linux-kernel, xen-devel, x86
Cc: boris.ostrovsky, hpa, tglx, mingo, Juergen Gross
Signed-off-by: Juergen Gross <jgross@suse.com>
---
arch/x86/xen/efi.c | 14 +-------------
arch/x86/xen/enlighten.c | 2 ++
arch/x86/xen/enlighten_hvm.c | 2 ++
arch/x86/xen/grant-table.c | 25 +------------------------
arch/x86/xen/mmu.c | 2 ++
arch/x86/xen/mmu_pv.c | 2 ++
arch/x86/xen/p2m.c | 2 ++
arch/x86/xen/pci-swiotlb-xen.c | 2 ++
arch/x86/xen/platform-pci-unplug.c | 16 ++--------------
arch/x86/xen/vdso.h | 2 ++
arch/x86/xen/xen-pvh.S | 15 ++-------------
11 files changed, 20 insertions(+), 64 deletions(-)
diff --git a/arch/x86/xen/efi.c b/arch/x86/xen/efi.c
index 1804b27f9632..1fbb629a9d78 100644
--- a/arch/x86/xen/efi.c
+++ b/arch/x86/xen/efi.c
@@ -1,18 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2014 Oracle Co., Daniel Kiper
- *
- * 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.
- *
- * 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, see <http://www.gnu.org/licenses/>.
*/
#include <linux/bitops.h>
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 3b5318505c69..42122e21542b 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0
+
#ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
#include <linux/bootmem.h>
#endif
diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c
index 19c1ff542387..0e75642d42a3 100644
--- a/arch/x86/xen/enlighten_hvm.c
+++ b/arch/x86/xen/enlighten_hvm.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0
+
#include <linux/acpi.h>
#include <linux/cpu.h>
#include <linux/kexec.h>
diff --git a/arch/x86/xen/grant-table.c b/arch/x86/xen/grant-table.c
index 92ccc718152d..ecb0d5450334 100644
--- a/arch/x86/xen/grant-table.c
+++ b/arch/x86/xen/grant-table.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
/******************************************************************************
* grant_table.c
* x86 specific part
@@ -8,30 +9,6 @@
* Copyright (c) 2004-2005, K A Fraser
* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan. Split out x86 specific part.
- *
- * 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; or, when distributed
- * separately from the Linux kernel or incorporated into other
- * software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy, modify,
- * merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
*/
#include <linux/sched.h>
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index e0e13fe16d37..60e9c37fd79f 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0
+
#include <linux/pfn.h>
#include <asm/xen/page.h>
#include <asm/xen/hypercall.h>
diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
index ea4b2f69dfce..b7ec689320c7 100644
--- a/arch/x86/xen/mmu_pv.c
+++ b/arch/x86/xen/mmu_pv.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0
+
/*
* Xen mmu operations
*
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 159a897151d6..d6d74efd8912 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0
+
/*
* Xen leaves the responsibility for maintaining p2m mappings to the
* guests themselves, but it must also access and update the p2m array
diff --git a/arch/x86/xen/pci-swiotlb-xen.c b/arch/x86/xen/pci-swiotlb-xen.c
index 37c6056a7bba..33293ce01d8d 100644
--- a/arch/x86/xen/pci-swiotlb-xen.c
+++ b/arch/x86/xen/pci-swiotlb-xen.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0
+
/* Glue code to lib/swiotlb-xen.c */
#include <linux/dma-mapping.h>
diff --git a/arch/x86/xen/platform-pci-unplug.c b/arch/x86/xen/platform-pci-unplug.c
index 3957946a6cfe..2e794ac9d8e8 100644
--- a/arch/x86/xen/platform-pci-unplug.c
+++ b/arch/x86/xen/platform-pci-unplug.c
@@ -1,22 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+
/******************************************************************************
* platform-pci-unplug.c
*
* Xen platform PCI device driver
* Copyright (c) 2010, Citrix
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope 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, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
*/
#include <linux/init.h>
diff --git a/arch/x86/xen/vdso.h b/arch/x86/xen/vdso.h
index 861fedfe5230..873c54c488fe 100644
--- a/arch/x86/xen/vdso.h
+++ b/arch/x86/xen/vdso.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
/* Bit used for the pseudo-hwcap for non-negative segments. We use
bit 1 to avoid bugs in some versions of glibc when bit 0 is
used; the choice is otherwise arbitrary. */
diff --git a/arch/x86/xen/xen-pvh.S b/arch/x86/xen/xen-pvh.S
index ca2d3b2bf2af..b0e471506cd8 100644
--- a/arch/x86/xen/xen-pvh.S
+++ b/arch/x86/xen/xen-pvh.S
@@ -1,18 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
/*
* Copyright C 2016, Oracle and/or its affiliates. All rights reserved.
- *
- * 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.
- *
- * 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, see <http://www.gnu.org/licenses/>.
*/
.code32
--
2.13.7
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