From a2ddd68c8365ec602db6b2a9cf83bb441ca701cc Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Wed, 21 Dec 2022 08:48:45 +0800 Subject: [PATCH 4/8] hw/arm/virt: Introduce virt_get_high_memmap_enabled() helper RH-Author: Gavin Shan RH-MergeRequest: 126: hw/arm/virt: Optimize high memory region address assignment RH-Bugzilla: 2113840 RH-Acked-by: Eric Auger RH-Acked-by: Cornelia Huck RH-Acked-by: Miroslav Rezanina RH-Commit: [4/8] 65524de2fc106600bbaff641caa8c4f2f8027114 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2113840 This introduces virt_get_high_memmap_enabled() helper, which returns the pointer to vms->highmem_{redists, ecam, mmio}. The pointer will be used in the subsequent patches. No functional change intended. Signed-off-by: Gavin Shan Reviewed-by: Eric Auger Reviewed-by: Cornelia Huck Reviewed-by: Marc Zyngier Tested-by: Zhenyu Zhang Message-id: 20221029224307.138822-5-gshan@redhat.com Signed-off-by: Peter Maydell (cherry picked from commit a5cb1350b19a5c2a58ab4edddf609ed429c13085) Signed-off-by: Gavin Shan --- hw/arm/virt.c | 32 +++++++++++++++++++------------- 1 file changed, 19 insertions(+), 13 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index ddcf7ee2f8..6e3b9fc060 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1736,14 +1736,31 @@ static uint64_t virt_cpu_mp_affinity(VirtMachineState *vms, int idx) return arm_cpu_mp_affinity(idx, clustersz); } +static inline bool *virt_get_high_memmap_enabled(VirtMachineState *vms, + int index) +{ + bool *enabled_array[] = { + &vms->highmem_redists, + &vms->highmem_ecam, + &vms->highmem_mmio, + }; + + assert(ARRAY_SIZE(extended_memmap) - VIRT_LOWMEMMAP_LAST == + ARRAY_SIZE(enabled_array)); + assert(index - VIRT_LOWMEMMAP_LAST < ARRAY_SIZE(enabled_array)); + + return enabled_array[index - VIRT_LOWMEMMAP_LAST]; +} + static void virt_set_high_memmap(VirtMachineState *vms, hwaddr base, int pa_bits) { hwaddr region_base, region_size; - bool fits; + bool *region_enabled, fits; int i; for (i = VIRT_LOWMEMMAP_LAST; i < ARRAY_SIZE(extended_memmap); i++) { + region_enabled = virt_get_high_memmap_enabled(vms, i); region_base = ROUND_UP(base, extended_memmap[i].size); region_size = extended_memmap[i].size; @@ -1761,18 +1778,7 @@ static void virt_set_high_memmap(VirtMachineState *vms, vms->highest_gpa = region_base + region_size - 1; } - switch (i) { - case VIRT_HIGH_GIC_REDIST2: - vms->highmem_redists &= fits; - break; - case VIRT_HIGH_PCIE_ECAM: - vms->highmem_ecam &= fits; - break; - case VIRT_HIGH_PCIE_MMIO: - vms->highmem_mmio &= fits; - break; - } - + *region_enabled &= fits; base = region_base + region_size; } } -- 2.31.1