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[PATCH v3 3/5] hw/arm/virt: Introduce variable region_base in virt_set_h
From: |
Gavin Shan |
Subject: |
[PATCH v3 3/5] hw/arm/virt: Introduce variable region_base in virt_set_high_memmap() |
Date: |
Thu, 22 Sep 2022 07:13:47 +0800 |
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>
---
hw/arm/virt.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
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;
}
}
--
2.23.0
- Re: [PATCH v3 1/5] hw/arm/virt: Introduce virt_set_high_memmap() helper, (continued)
[PATCH v3 3/5] hw/arm/virt: Introduce variable region_base in virt_set_high_memmap(),
Gavin Shan <=
Re: [PATCH v3 0/5] hw/arm/virt: Improve address assignment for high memory regions, Zhenyu Zhang, 2022/09/21