[PATCH 09/10] irqchip/gic-v3-its: Register LPI tables with EFI config table
From: Marc Zyngier <hidden>
Date: 2018-09-21 20:00:37
Also in:
lkml
Subsystem:
arm generic interrupt controller drivers, irqchip drivers, the rest · Maintainers:
Marc Zyngier, Thomas Gleixner, Linus Torvalds
Upon enabling a redistributor, let's register the allocated tables with the EFI table that tracks the memory reservations. Signed-off-by: Marc Zyngier <redacted> --- drivers/irqchip/irq-gic-v3-its.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 4d9604dd6fb1..4912dc57bf07 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c@@ -22,6 +22,7 @@ #include <linux/crash_dump.h> #include <linux/delay.h> #include <linux/dma-iommu.h> +#include <linux/efi.h> #include <linux/interrupt.h> #include <linux/irqdomain.h> #include <linux/list.h>
@@ -1628,6 +1629,14 @@ static void its_free_prop_table(struct page *prop_page) get_order(LPI_PROPBASE_SZ)); } +static int gic_reserve_range(phys_addr_t addr, unsigned long size) +{ + if (efi_enabled(EFI_CONFIG_TABLES)) + return efi_mem_reserve_persistent(addr, size); + + return 0; +} + static int __init its_alloc_lpi_prop_table(void) { if (gic_rdists->flags & RDIST_FLAGS_RD_TABLES_PREALLOCATED) {
@@ -1655,6 +1664,8 @@ static int __init its_alloc_lpi_prop_table(void) gic_rdists->prop_table_pa = page_to_phys(page); gic_rdists->prop_table_va = page_address(page); + WARN_ON(gic_reserve_range(gic_rdists->prop_table_pa, + LPI_PROPBASE_SZ)); } pr_info("GICv3: using LPI property table @%pa\n",
@@ -2049,6 +2060,7 @@ static void its_cpu_init_lpis(void) pend_page = gic_data_rdist()->pend_page; paddr = page_to_phys(pend_page); + WARN_ON(gic_reserve_range(paddr, LPI_PENDBASE_SZ)); /* set PROPBASE */ val = (gic_rdists->prop_table_pa |
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2.18.0