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From 305a369fd18f29914bf96cc181add532d435d8ed Mon Sep 17 00:00:00 2001
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From: Gavin Shan <gshan@redhat.com>
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Date: Wed, 21 Dec 2022 08:48:45 +0800
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Subject: [PATCH 3/8] hw/arm/virt: Introduce variable region_base in
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virt_set_high_memmap()
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RH-Author: Gavin Shan <gshan@redhat.com>
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RH-MergeRequest: 126: hw/arm/virt: Optimize high memory region address assignment
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RH-Bugzilla: 2113840
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RH-Acked-by: Eric Auger <eric.auger@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Commit: [3/8] 15de90df217d680ccc858b679898b3993e1c050a
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2113840
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This introduces variable 'region_base' for the base address of the
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specific high memory region. It's the preparatory work to optimize
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high memory region address assignment.
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No functional change intended.
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Signed-off-by: Gavin Shan <gshan@redhat.com>
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Reviewed-by: Eric Auger <eric.auger@redhat.com>
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Reviewed-by: Cornelia Huck <cohuck@redhat.com>
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Reviewed-by: Marc Zyngier <maz@kernel.org>
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Tested-by: Zhenyu Zhang <zhenyzha@redhat.com>
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Message-id: 20221029224307.138822-4-gshan@redhat.com
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Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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(cherry picked from commit fa245799b9407fc7b561da185b3d889df5e16a88)
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Signed-off-by: Gavin Shan <gshan@redhat.com>
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---
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hw/arm/virt.c | 12 ++++++------
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1 file changed, 6 insertions(+), 6 deletions(-)
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diff --git a/hw/arm/virt.c b/hw/arm/virt.c
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index ca098d40b8..ddcf7ee2f8 100644
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--- a/hw/arm/virt.c
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+++ b/hw/arm/virt.c
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@@ -1739,15 +1739,15 @@ static uint64_t virt_cpu_mp_affinity(VirtMachineState *vms, int idx)
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static void virt_set_high_memmap(VirtMachineState *vms,
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hwaddr base, int pa_bits)
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{
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- hwaddr region_size;
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+ hwaddr region_base, region_size;
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bool fits;
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int i;
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for (i = VIRT_LOWMEMMAP_LAST; i < ARRAY_SIZE(extended_memmap); i++) {
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+ region_base = ROUND_UP(base, extended_memmap[i].size);
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region_size = extended_memmap[i].size;
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- base = ROUND_UP(base, region_size);
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- vms->memmap[i].base = base;
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+ vms->memmap[i].base = region_base;
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vms->memmap[i].size = region_size;
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/*
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@@ -1756,9 +1756,9 @@ static void virt_set_high_memmap(VirtMachineState *vms,
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*
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* For each device that doesn't fit, disable it.
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*/
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- fits = (base + region_size) <= BIT_ULL(pa_bits);
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+ fits = (region_base + region_size) <= BIT_ULL(pa_bits);
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if (fits) {
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- vms->highest_gpa = base + region_size - 1;
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+ vms->highest_gpa = region_base + region_size - 1;
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}
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switch (i) {
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@@ -1773,7 +1773,7 @@ static void virt_set_high_memmap(VirtMachineState *vms,
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break;
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}
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- base += region_size;
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+ base = region_base + region_size;
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}
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}
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--
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2.31.1
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