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From: Stefano Stabellini <sstabellini@kernel.org>
To: xen-devel@lists.xenproject.org
Cc: Stefano Stabellini <stefanos@xilinx.com>,
	julien.grall@arm.com, sstabellini@kernel.org, JBeulich@suse.com,
	andrew.cooper3@citrix.com
Subject: [Xen-devel] [PATCH v2 01/10] xen: add a p2mt parameter to map_mmio_regions
Date: Tue, 30 Apr 2019 14:02:43 -0700
Message-ID: <1556658172-8824-1-git-send-email-sstabellini@kernel.org> (raw)
Message-ID: <20190430210243.3TZQT-_0Dz2WYSyb9BuynR4NvzjxCncaGV5zrowfLR4@z> (raw)
In-Reply-To: <alpine.DEB.2.10.1904301358560.13269@sstabellini-ThinkPad-X260>

Add a p2mt parameter to map_mmio_regions, pass p2m_mmio_direct_dev on
ARM and p2m_mmio_direct on x86 -- no changes in behavior.

On ARM, given the similarity between map_mmio_regions after the change
and map_regions_p2mt, remove un/map_regions_p2mt.

Signed-off-by: Stefano Stabellini <stefanos@xilinx.com>
CC: JBeulich@suse.com
CC: andrew.cooper3@citrix.com
---
Changes in v2:
- new patch
---
 xen/arch/arm/acpi/domain_build.c |  4 ++--
 xen/arch/arm/domain_build.c      |  2 +-
 xen/arch/arm/gic-v2.c            |  3 ++-
 xen/arch/arm/p2m.c               | 18 +-----------------
 xen/arch/arm/platforms/exynos5.c |  6 ++++--
 xen/arch/arm/platforms/omap5.c   | 12 ++++++++----
 xen/arch/arm/traps.c             |  2 +-
 xen/arch/arm/vgic-v2.c           |  2 +-
 xen/arch/arm/vgic/vgic-v2.c      |  2 +-
 xen/arch/x86/hvm/dom0_build.c    |  7 +++++--
 xen/arch/x86/mm/p2m.c            |  6 +++++-
 xen/common/domctl.c              |  7 ++++++-
 xen/drivers/vpci/header.c        |  3 ++-
 xen/include/asm-arm/p2m.h        | 15 ---------------
 xen/include/xen/p2m-common.h     |  3 ++-
 15 files changed, 41 insertions(+), 51 deletions(-)

diff --git a/xen/arch/arm/acpi/domain_build.c b/xen/arch/arm/acpi/domain_build.c
index 5aae32a..f4ac91c 100644
--- a/xen/arch/arm/acpi/domain_build.c
+++ b/xen/arch/arm/acpi/domain_build.c
@@ -193,7 +193,7 @@ static void __init acpi_map_other_tables(struct domain *d)
     {
         addr = acpi_gbl_root_table_list.tables[i].address;
         size = acpi_gbl_root_table_list.tables[i].length;
-        res = map_regions_p2mt(d,
+        res = map_mmio_regions(d,
                                gaddr_to_gfn(addr),
                                PFN_UP(size),
                                maddr_to_mfn(addr),
@@ -547,7 +547,7 @@ int __init prepare_acpi(struct domain *d, struct kernel_info *kinfo)
     acpi_create_efi_mmap_table(d, &kinfo->mem, tbl_add);
 
     /* Map the EFI and ACPI tables to Dom0 */
-    rc = map_regions_p2mt(d,
+    rc = map_mmio_regions(d,
                           gaddr_to_gfn(d->arch.efi_acpi_gpa),
                           PFN_UP(d->arch.efi_acpi_len),
                           virt_to_mfn(d->arch.efi_acpi_table),
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index d983677..1f808b2 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -1171,7 +1171,7 @@ static int __init map_range_to_domain(const struct dt_device_node *dev,
 
     if ( need_mapping )
     {
-        res = map_regions_p2mt(d,
+        res = map_mmio_regions(d,
                                gaddr_to_gfn(addr),
                                PFN_UP(len),
                                maddr_to_mfn(addr),
diff --git a/xen/arch/arm/gic-v2.c b/xen/arch/arm/gic-v2.c
index 256988c..d2ef361 100644
--- a/xen/arch/arm/gic-v2.c
+++ b/xen/arch/arm/gic-v2.c
@@ -701,7 +701,8 @@ static int gicv2_map_hwdown_extra_mappings(struct domain *d)
 
         ret = map_mmio_regions(d, gaddr_to_gfn(v2m_data->addr),
                                PFN_UP(v2m_data->size),
-                               maddr_to_mfn(v2m_data->addr));
+                               maddr_to_mfn(v2m_data->addr),
+                               p2m_mmio_direct_dev);
         if ( ret )
         {
             printk(XENLOG_ERR "GICv2: Map v2m frame to d%d failed.\n",
diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
index c38bd7e..e44c932 100644
--- a/xen/arch/arm/p2m.c
+++ b/xen/arch/arm/p2m.c
@@ -1331,7 +1331,7 @@ static inline int p2m_remove_mapping(struct domain *d,
     return rc;
 }
 
-int map_regions_p2mt(struct domain *d,
+int map_mmio_regions(struct domain *d,
                      gfn_t gfn,
                      unsigned long nr,
                      mfn_t mfn,
@@ -1340,22 +1340,6 @@ int map_regions_p2mt(struct domain *d,
     return p2m_insert_mapping(d, gfn, nr, mfn, p2mt);
 }
 
-int unmap_regions_p2mt(struct domain *d,
-                       gfn_t gfn,
-                       unsigned long nr,
-                       mfn_t mfn)
-{
-    return p2m_remove_mapping(d, gfn, nr, mfn);
-}
-
-int map_mmio_regions(struct domain *d,
-                     gfn_t start_gfn,
-                     unsigned long nr,
-                     mfn_t mfn)
-{
-    return p2m_insert_mapping(d, start_gfn, nr, mfn, p2m_mmio_direct_dev);
-}
-
 int unmap_mmio_regions(struct domain *d,
                        gfn_t start_gfn,
                        unsigned long nr,
diff --git a/xen/arch/arm/platforms/exynos5.c b/xen/arch/arm/platforms/exynos5.c
index 6560507..97cd080 100644
--- a/xen/arch/arm/platforms/exynos5.c
+++ b/xen/arch/arm/platforms/exynos5.c
@@ -83,11 +83,13 @@ static int exynos5250_specific_mapping(struct domain *d)
 {
     /* Map the chip ID */
     map_mmio_regions(d, gaddr_to_gfn(EXYNOS5_PA_CHIPID), 1,
-                     maddr_to_mfn(EXYNOS5_PA_CHIPID));
+                     maddr_to_mfn(EXYNOS5_PA_CHIPID),
+                     p2m_mmio_direct_dev);
 
     /* Map the PWM region */
     map_mmio_regions(d, gaddr_to_gfn(EXYNOS5_PA_TIMER), 2,
-                     maddr_to_mfn(EXYNOS5_PA_TIMER));
+                     maddr_to_mfn(EXYNOS5_PA_TIMER),
+                     p2m_mmio_direct_dev);
 
     return 0;
 }
diff --git a/xen/arch/arm/platforms/omap5.c b/xen/arch/arm/platforms/omap5.c
index aee24e4..c5701df 100644
--- a/xen/arch/arm/platforms/omap5.c
+++ b/xen/arch/arm/platforms/omap5.c
@@ -99,19 +99,23 @@ static int omap5_specific_mapping(struct domain *d)
 {
     /* Map the PRM module */
     map_mmio_regions(d, gaddr_to_gfn(OMAP5_PRM_BASE), 2,
-                     maddr_to_mfn(OMAP5_PRM_BASE));
+                     maddr_to_mfn(OMAP5_PRM_BASE),
+                     p2m_mmio_direct_dev);
 
     /* Map the PRM_MPU */
     map_mmio_regions(d, gaddr_to_gfn(OMAP5_PRCM_MPU_BASE), 1,
-                     maddr_to_mfn(OMAP5_PRCM_MPU_BASE));
+                     maddr_to_mfn(OMAP5_PRCM_MPU_BASE),
+                     p2m_mmio_direct_dev);
 
     /* Map the Wakeup Gen */
     map_mmio_regions(d, gaddr_to_gfn(OMAP5_WKUPGEN_BASE), 1,
-                     maddr_to_mfn(OMAP5_WKUPGEN_BASE));
+                     maddr_to_mfn(OMAP5_WKUPGEN_BASE),
+                     p2m_mmio_direct_dev);
 
     /* Map the on-chip SRAM */
     map_mmio_regions(d, gaddr_to_gfn(OMAP5_SRAM_PA), 32,
-                     maddr_to_mfn(OMAP5_SRAM_PA));
+                     maddr_to_mfn(OMAP5_SRAM_PA),
+                     p2m_mmio_direct_dev);
 
     return 0;
 }
diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c
index d8b9a8a..afae5a1 100644
--- a/xen/arch/arm/traps.c
+++ b/xen/arch/arm/traps.c
@@ -1887,7 +1887,7 @@ static bool try_map_mmio(gfn_t gfn)
     if ( !iomem_access_permitted(d, mfn_x(mfn), mfn_x(mfn) + 1) )
         return false;
 
-    return !map_regions_p2mt(d, gfn, 1, mfn, p2m_mmio_direct_c);
+    return !map_mmio_regions(d, gfn, 1, mfn, p2m_mmio_direct_c);
 }
 
 static void do_trap_stage2_abort_guest(struct cpu_user_regs *regs,
diff --git a/xen/arch/arm/vgic-v2.c b/xen/arch/arm/vgic-v2.c
index 64b141f..1543625 100644
--- a/xen/arch/arm/vgic-v2.c
+++ b/xen/arch/arm/vgic-v2.c
@@ -691,7 +691,7 @@ static int vgic_v2_domain_init(struct domain *d)
      * region of the guest.
      */
     ret = map_mmio_regions(d, gaddr_to_gfn(cbase), csize / PAGE_SIZE,
-                           maddr_to_mfn(vbase));
+                           maddr_to_mfn(vbase), p2m_mmio_direct_dev);
     if ( ret )
         return ret;
 
diff --git a/xen/arch/arm/vgic/vgic-v2.c b/xen/arch/arm/vgic/vgic-v2.c
index b5ba4ac..04f34dd 100644
--- a/xen/arch/arm/vgic/vgic-v2.c
+++ b/xen/arch/arm/vgic/vgic-v2.c
@@ -309,7 +309,7 @@ int vgic_v2_map_resources(struct domain *d)
      * region of the guest.
      */
     ret = map_mmio_regions(d, gaddr_to_gfn(cbase), csize / PAGE_SIZE,
-                           maddr_to_mfn(vbase));
+                           maddr_to_mfn(vbase), p2m_mmio_direct_dev);
     if ( ret )
     {
         gdprintk(XENLOG_ERR, "Unable to remap VGIC CPU to VCPU\n");
diff --git a/xen/arch/x86/hvm/dom0_build.c b/xen/arch/x86/hvm/dom0_build.c
index aa599f0..84776fc 100644
--- a/xen/arch/x86/hvm/dom0_build.c
+++ b/xen/arch/x86/hvm/dom0_build.c
@@ -79,8 +79,11 @@ static int __init modify_identity_mmio(struct domain *d, unsigned long pfn,
 
     for ( ; ; )
     {
-        rc = map ?   map_mmio_regions(d, _gfn(pfn), nr_pages, _mfn(pfn))
-                 : unmap_mmio_regions(d, _gfn(pfn), nr_pages, _mfn(pfn));
+        if ( map )
+            rc = map_mmio_regions(d, _gfn(pfn), nr_pages, _mfn(pfn),
+                                  p2m_mmio_direct);
+        else
+            rc = unmap_mmio_regions(d, _gfn(pfn), nr_pages, _mfn(pfn));
         if ( rc == 0 )
             break;
         if ( rc < 0 )
diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c
index 9e81a30..a72f012 100644
--- a/xen/arch/x86/mm/p2m.c
+++ b/xen/arch/x86/mm/p2m.c
@@ -2264,12 +2264,16 @@ static unsigned int mmio_order(const struct domain *d,
 int map_mmio_regions(struct domain *d,
                      gfn_t start_gfn,
                      unsigned long nr,
-                     mfn_t mfn)
+                     mfn_t mfn,
+                     p2m_type_t p2mt)
 {
     int ret = 0;
     unsigned long i;
     unsigned int iter, order;
 
+    if ( p2mt != p2m_mmio_direct )
+        return -EOPNOTSUPP;
+
     if ( !paging_mode_translate(d) )
         return 0;
 
diff --git a/xen/common/domctl.c b/xen/common/domctl.c
index bade9a6..18a0f8f 100644
--- a/xen/common/domctl.c
+++ b/xen/common/domctl.c
@@ -927,6 +927,7 @@ long do_domctl(XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl)
         unsigned long nr_mfns = op->u.memory_mapping.nr_mfns;
         unsigned long mfn_end = mfn + nr_mfns - 1;
         int add = op->u.memory_mapping.add_mapping;
+        p2m_type_t p2mt;
 
         ret = -EINVAL;
         if ( mfn_end < mfn || /* wrap? */
@@ -939,6 +940,10 @@ long do_domctl(XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl)
         /* Must break hypercall up as this could take a while. */
         if ( nr_mfns > 64 )
             break;
+
+        p2mt = p2m_mmio_direct_dev;
+#else
+        p2mt = p2m_mmio_direct;
 #endif
 
         ret = -EPERM;
@@ -956,7 +961,7 @@ long do_domctl(XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl)
                    "memory_map:add: dom%d gfn=%lx mfn=%lx nr=%lx\n",
                    d->domain_id, gfn, mfn, nr_mfns);
 
-            ret = map_mmio_regions(d, _gfn(gfn), nr_mfns, _mfn(mfn));
+            ret = map_mmio_regions(d, _gfn(gfn), nr_mfns, _mfn(mfn), p2mt);
             if ( ret < 0 )
                 printk(XENLOG_G_WARNING
                        "memory_map:fail: dom%d gfn=%lx mfn=%lx nr=%lx ret:%ld\n",
diff --git a/xen/drivers/vpci/header.c b/xen/drivers/vpci/header.c
index efb6ca9..6adfa55 100644
--- a/xen/drivers/vpci/header.c
+++ b/xen/drivers/vpci/header.c
@@ -52,7 +52,8 @@ static int map_range(unsigned long s, unsigned long e, void *data,
          * - {un}map_mmio_regions doesn't support preemption.
          */
 
-        rc = map->map ? map_mmio_regions(map->d, _gfn(s), size, _mfn(s))
+        rc = map->map ? map_mmio_regions(map->d, _gfn(s), size, _mfn(s),
+                                         p2m_mmio_direct)
                       : unmap_mmio_regions(map->d, _gfn(s), size, _mfn(s));
         if ( rc == 0 )
         {
diff --git a/xen/include/asm-arm/p2m.h b/xen/include/asm-arm/p2m.h
index 041dea8..0218021 100644
--- a/xen/include/asm-arm/p2m.h
+++ b/xen/include/asm-arm/p2m.h
@@ -252,21 +252,6 @@ void p2m_toggle_cache(struct vcpu *v, bool was_enabled);
 
 void p2m_flush_vm(struct vcpu *v);
 
-/*
- * Map a region in the guest p2m with a specific p2m type.
- * The memory attributes will be derived from the p2m type.
- */
-int map_regions_p2mt(struct domain *d,
-                     gfn_t gfn,
-                     unsigned long nr,
-                     mfn_t mfn,
-                     p2m_type_t p2mt);
-
-int unmap_regions_p2mt(struct domain *d,
-                       gfn_t gfn,
-                       unsigned long nr,
-                       mfn_t mfn);
-
 int map_dev_mmio_region(struct domain *d,
                         gfn_t gfn,
                         unsigned long nr,
diff --git a/xen/include/xen/p2m-common.h b/xen/include/xen/p2m-common.h
index 58031a6..69c82cc 100644
--- a/xen/include/xen/p2m-common.h
+++ b/xen/include/xen/p2m-common.h
@@ -14,7 +14,8 @@ guest_physmap_remove_page(struct domain *d, gfn_t gfn, mfn_t mfn,
 int map_mmio_regions(struct domain *d,
                      gfn_t start_gfn,
                      unsigned long nr,
-                     mfn_t mfn);
+                     mfn_t mfn,
+                     p2m_type_t p2mt);
 int unmap_mmio_regions(struct domain *d,
                        gfn_t start_gfn,
                        unsigned long nr,
-- 
1.9.1


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  parent reply index

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-30 21:02 [PATCH v2 0/10] iomem memory policy Stefano Stabellini
2019-04-30 21:02 ` [Xen-devel] " Stefano Stabellini
2019-04-30 21:02 ` Stefano Stabellini [this message]
2019-04-30 21:02   ` [Xen-devel] [PATCH v2 01/10] xen: add a p2mt parameter to map_mmio_regions Stefano Stabellini
2019-05-02 14:59   ` Jan Beulich
2019-05-02 14:59     ` [Xen-devel] " Jan Beulich
2019-05-02 18:49     ` Stefano Stabellini
2019-05-02 18:49       ` [Xen-devel] " Stefano Stabellini
2019-05-15 13:39   ` Oleksandr
2019-05-15 13:39     ` [Xen-devel] " Oleksandr
2019-04-30 21:02 ` [PATCH v2 02/10] xen: rename un/map_mmio_regions to un/map_regions Stefano Stabellini
2019-04-30 21:02   ` [Xen-devel] " Stefano Stabellini
2019-05-01  9:22   ` Julien Grall
2019-05-01  9:22     ` [Xen-devel] " Julien Grall
2019-06-17 21:24     ` Stefano Stabellini
2019-06-18 11:05       ` Julien Grall
2019-06-18 20:19         ` Stefano Stabellini
2019-05-02 15:03   ` Jan Beulich
2019-05-02 15:03     ` [Xen-devel] " Jan Beulich
2019-05-02 18:55     ` Stefano Stabellini
2019-05-02 18:55       ` [Xen-devel] " Stefano Stabellini
2019-04-30 21:02 ` [PATCH v2 03/10] xen: extend XEN_DOMCTL_memory_mapping to handle memory policy Stefano Stabellini
2019-04-30 21:02   ` [Xen-devel] " Stefano Stabellini
2019-05-02 15:12   ` Jan Beulich
2019-05-02 15:12     ` [Xen-devel] " Jan Beulich
2019-06-17 21:28     ` Stefano Stabellini
2019-06-18  8:59       ` Jan Beulich
2019-06-18 20:32         ` Stefano Stabellini
2019-06-18 23:15           ` Stefano Stabellini
2019-06-19  6:53             ` Jan Beulich
2019-05-07 16:41   ` Julien Grall
2019-05-07 16:41     ` [Xen-devel] " Julien Grall
2019-06-17 22:43     ` Stefano Stabellini
2019-06-18 11:13       ` Julien Grall
2019-05-15 14:40   ` Oleksandr
2019-05-15 14:40     ` [Xen-devel] " Oleksandr
2019-04-30 21:02 ` [PATCH v2 04/10] libxc: introduce xc_domain_mem_map_policy Stefano Stabellini
2019-04-30 21:02   ` [Xen-devel] " Stefano Stabellini
2019-04-30 21:02 ` [PATCH v2 05/10] libxl/xl: add memory policy option to iomem Stefano Stabellini
2019-04-30 21:02   ` [Xen-devel] " Stefano Stabellini
2019-05-01  9:42   ` Julien Grall
2019-05-01  9:42     ` [Xen-devel] " Julien Grall
2019-06-17 22:32     ` Stefano Stabellini
2019-06-18 11:09       ` Julien Grall
2019-06-18 11:15   ` Julien Grall
2019-06-18 22:07     ` Stefano Stabellini
2019-06-18 22:20       ` Julien Grall
2019-06-18 22:46         ` Stefano Stabellini
2019-04-30 21:02 ` [PATCH v2 06/10] xen/arm: extend device_tree_for_each_node Stefano Stabellini
2019-04-30 21:02   ` [Xen-devel] " Stefano Stabellini
2019-05-07 17:12   ` Julien Grall
2019-05-07 17:12     ` [Xen-devel] " Julien Grall
2019-04-30 21:02 ` [PATCH v2 07/10] xen/arm: make process_memory_node a device_tree_node_func Stefano Stabellini
2019-04-30 21:02   ` [Xen-devel] " Stefano Stabellini
2019-05-01  9:47   ` Julien Grall
2019-05-01  9:47     ` [Xen-devel] " Julien Grall
2019-04-30 21:02 ` [PATCH v2 08/10] xen/arm: keep track of reserved-memory regions Stefano Stabellini
2019-04-30 21:02   ` [Xen-devel] " Stefano Stabellini
2019-05-01 10:03   ` Julien Grall
2019-05-01 10:03     ` [Xen-devel] " Julien Grall
2019-06-21 23:47     ` Stefano Stabellini
2019-05-07 17:21   ` Julien Grall
2019-05-07 17:21     ` [Xen-devel] " Julien Grall
2019-04-30 21:02 ` [PATCH v2 09/10] xen/arm: map reserved-memory regions as normal memory in dom0 Stefano Stabellini
2019-04-30 21:02   ` [Xen-devel] " Stefano Stabellini
2019-05-07 19:52   ` Julien Grall
2019-05-07 19:52     ` [Xen-devel] " Julien Grall
2019-04-30 21:02 ` [PATCH v2 10/10] xen/arm: add reserved-memory regions to the dom0 memory node Stefano Stabellini
2019-04-30 21:02   ` [Xen-devel] " Stefano Stabellini
2019-05-07 20:15   ` Julien Grall
2019-05-07 20:15     ` [Xen-devel] " Julien Grall
2019-05-10 20:51     ` Stefano Stabellini
2019-05-10 20:51       ` [Xen-devel] " Stefano Stabellini
2019-05-10 21:43       ` Julien Grall
2019-05-10 21:43         ` [Xen-devel] " Julien Grall
2019-05-11 12:40         ` Julien Grall
2019-05-11 12:40           ` [Xen-devel] " Julien Grall
2019-05-20 21:26           ` Stefano Stabellini
2019-05-20 21:26             ` [Xen-devel] " Stefano Stabellini
2019-05-20 22:38             ` Julien Grall
2019-05-20 22:38               ` [Xen-devel] " Julien Grall
2019-06-05 16:30               ` Julien Grall
2019-06-21 23:47                 ` Stefano Stabellini
2019-05-16 16:52 ` [PATCH v2 0/10] iomem memory policy Oleksandr
2019-05-16 16:52   ` [Xen-devel] " Oleksandr
2019-06-21 23:48   ` Stefano Stabellini

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Xen-Devel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/xen-devel/0 xen-devel/git/0.git
	git clone --mirror https://lore.kernel.org/xen-devel/1 xen-devel/git/1.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 xen-devel xen-devel/ https://lore.kernel.org/xen-devel \
		xen-devel@lists.xenproject.org xen-devel@archiver.kernel.org
	public-inbox-index xen-devel


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.xenproject.lists.xen-devel


AGPL code for this site: git clone https://public-inbox.org/ public-inbox