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irqchip/gic-v4.1: Set vpe_l1_base for all redistributors 

Currently, we will not set vpe_l1_page for the current RD if we can
inherit the vPE configuration table from another RD (or ITS), which
results in an inconsistency between RDs within the same CommonLPIAff
group.

Let's rename it to vpe_l1_base to indicate the base address of the
vPE configuration table of this RD, and set it properly for *all*
v4.1 redistributors.

Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200206075711.1275-3-yuzenghui@huawei.com
This commit is contained in:
Zenghui Yu 2020-02-06 15:57:07 +08:00 committed by Marc Zyngier
parent e88bd316e5
commit 8b718d403c
2 changed files with 5 additions and 2 deletions
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5
drivers/irqchip/irq-gic-v3-its.c
View File

@ -2376,6 +2376,8 @@ static u64 inherit_vpe_l1_table_from_its(void)
continue;
/* We have a winner! */
gic_data_rdist()->vpe_l1_base = its->tables[2].base;
val = GICR_VPROPBASER_4_1_VALID;
if (baser & GITS_BASER_INDIRECT)
val |= GICR_VPROPBASER_4_1_INDIRECT;
@ -2432,6 +2434,7 @@ static u64 inherit_vpe_l1_table_from_rd(cpumask_t **mask)
val = gits_read_vpropbaser(base + SZ_128K + GICR_VPROPBASER);
val &= ~GICR_VPROPBASER_4_1_Z;
gic_data_rdist()->vpe_l1_base = gic_data_rdist_cpu(cpu)->vpe_l1_base;
*mask = gic_data_rdist_cpu(cpu)->vpe_table_mask;
return val;
@ -2542,7 +2545,7 @@ static int allocate_vpe_l1_table(void)
if (!page)
return -ENOMEM;
gic_data_rdist()->vpe_l1_page = page;
gic_data_rdist()->vpe_l1_base = page_address(page);
pa = virt_to_phys(page_address(page));
WARN_ON(!IS_ALIGNED(pa, psz));

2
include/linux/irqchip/arm-gic-v3.h
View File

@ -652,10 +652,10 @@ struct rdists {
struct {
void __iomem *rd_base;
struct page *pend_page;
struct page *vpe_l1_page;
phys_addr_t phys_base;
bool lpi_enabled;
cpumask_t *vpe_table_mask;
void *vpe_l1_base;
} __percpu *rdist;
phys_addr_t prop_table_pa;
void *prop_table_va;