diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-07-27 18:21:18 +0300 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-10-02 12:37:38 +0300 |
| commit | 3fb68faee8676900f896d1615442aeca36e5f940 (patch) | |
| tree | 566f38d3053cfa69005123391bc6d5446a300326 /drivers/irqchip | |
| parent | f842ca8e9c8a80d07f5589536311250d7d6018f9 (diff) | |
| download | linux-3fb68faee8676900f896d1615442aeca36e5f940.tar.xz | |
irqchip/gic-v3-its: Register LPI tables with EFI config table
Upon enabling a redistributor, let's register the allocated tables
with the EFI table that tracks the memory reservations.
Tested-by: Jeremy Linton <jeremy.linton@arm.com>
Tested-by: Bhupesh Sharma <bhsharma@redhat.com>
Tested-by: Lei Zhang <zhang.lei@jp.fujitsu.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 828af1a68b8e..4f567456296c 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_setup_lpi_prop_table(void) { if (gic_rdists->flags & RDIST_FLAGS_RD_TABLES_PREALLOCATED) { @@ -1655,6 +1664,8 @@ static int __init its_setup_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 | |