diff mbox series

[v4,3/6] hw/arm/virt: Introduce variable region_base in virt_set_high_memmap()

Message ID 20221004002627.59172-4-gshan@redhat.com (mailing list archive)
State New, archived
Headers show
Series hw/arm/virt: Improve address assignment for high memory regions | expand

Commit Message

Gavin Shan Oct. 4, 2022, 12:26 a.m. UTC 
This introduces variable 'region_base' for the base address of the
specific high memory region. It's the preparatory work to optimize
high memory region address assignment.

No functional change intended.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
---
 hw/arm/virt.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

Comments

Cornelia Huck Oct. 4, 2022, 10:18 a.m. UTC | #1 
On Tue, Oct 04 2022, Gavin Shan <gshan@redhat.com> wrote:

> This introduces variable 'region_base' for the base address of the
> specific high memory region. It's the preparatory work to optimize
> high memory region address assignment.
>
> No functional change intended.
>
> Signed-off-by: Gavin Shan <gshan@redhat.com>
> Reviewed-by: Eric Auger <eric.auger@redhat.com>
> ---
>  hw/arm/virt.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)

Reviewed-by: Cornelia Huck <cohuck@redhat.com>
diff mbox series

Patch

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 187b3ee0e2..b0b679d1f4 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -1692,15 +1692,15 @@  static uint64_t virt_cpu_mp_affinity(VirtMachineState *vms, int idx)
 static void virt_set_high_memmap(VirtMachineState *vms,
                                  hwaddr base, int pa_bits)
 {
-    hwaddr region_size;
+    hwaddr region_base, region_size;
     bool fits;
     int i;
 
     for (i = VIRT_LOWMEMMAP_LAST; i < ARRAY_SIZE(extended_memmap); i++) {
+        region_base = ROUND_UP(base, extended_memmap[i].size);
         region_size = extended_memmap[i].size;
 
-        base = ROUND_UP(base, region_size);
-        vms->memmap[i].base = base;
+        vms->memmap[i].base = region_base;
         vms->memmap[i].size = region_size;
 
         /*
@@ -1709,9 +1709,9 @@  static void virt_set_high_memmap(VirtMachineState *vms,
          *
          * For each device that doesn't fit, disable it.
          */
-        fits = (base + region_size) <= BIT_ULL(pa_bits);
+        fits = (region_base + region_size) <= BIT_ULL(pa_bits);
         if (fits) {
-            vms->highest_gpa = base + region_size - 1;
+            vms->highest_gpa = region_base + region_size - 1;
         }
 
         switch (i) {
@@ -1726,7 +1726,7 @@  static void virt_set_high_memmap(VirtMachineState *vms,
             break;
         }
 
-        base += region_size;
+        base = region_base + region_size;
     }
 }