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From: Marc Zyngier <marc.zyngier@arm.com>
To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Jeremy Linton <jeremy.linton@arm.com>,
	Jeffrey Hugo <jhugo@codeaurora.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Jason Cooper <jason@lakedaemon.net>
Subject: [PATCH 09/10] irqchip/gic-v3-its: Register LPI tables with EFI config table
Date: Fri, 21 Sep 2018 20:59:53 +0100	[thread overview]
Message-ID: <20180921195954.21574-10-marc.zyngier@arm.com> (raw)
In-Reply-To: <20180921195954.21574-1-marc.zyngier@arm.com>

Upon enabling a redistributor, let's register the allocated tables
with the EFI table that tracks the memory reservations.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
 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 |
-- 
2.18.0


  parent reply	other threads:[~2018-09-21 20:00 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-21 19:59 [PATCH 00/10] GICv3 support for kexec/kdump on EFI systems Marc Zyngier
2018-09-21 19:59 ` [PATCH 01/10] irqchip/gic-v3-its: Change initialization ordering for LPIs Marc Zyngier
2018-09-24 10:49   ` Julien Thierry
2018-09-21 19:59 ` [PATCH 02/10] irqchip/gic-v3-its: Consolidate LPI_PENDBASE_SZ usage Marc Zyngier
2018-09-24 10:33   ` Suzuki K Poulose
2018-09-24 10:50     ` Julien Thierry
2018-09-24 10:54       ` Suzuki K Poulose
2018-09-24 10:55         ` Julien Thierry
2018-09-26 10:28     ` Marc Zyngier
2018-09-21 19:59 ` [PATCH 03/10] irqchip/gic-v3-its: Split property table clearing from allocation Marc Zyngier
2018-09-21 19:59 ` [PATCH 04/10] irqchip/gic-v3-its: Move pending table allocation to init time Marc Zyngier
2018-09-24 11:58   ` Julien Thierry
2018-09-26 10:39     ` Marc Zyngier
2018-09-21 19:59 ` [PATCH 05/10] irqchip/gic-v3-its: Keep track of property table's PA and VA Marc Zyngier
2018-09-21 19:59 ` [PATCH 06/10] irqchip/gic-v3-its: Allow use of pre-programmed LPI tables Marc Zyngier
2018-09-24 12:52   ` Julien Thierry
2018-09-21 19:59 ` [PATCH 07/10] irqchip/gic-v3-its: Use pre-programmed redistributor tables with kdump kernels Marc Zyngier
2018-09-21 19:59 ` [PATCH 08/10] irqchip/gic-v3-its: Check that all RDs have the same property table Marc Zyngier
2018-09-21 19:59 ` Marc Zyngier [this message]
2018-09-21 19:59 ` [PATCH 10/10] irqchip/gic-v3-its: Allow use of LPI tables in reserved memory Marc Zyngier
2018-09-25 18:48 ` [PATCH 00/10] GICv3 support for kexec/kdump on EFI systems Jeremy Linton
2018-09-27  9:55 ` Bhupesh Sharma
2018-09-27 13:01 ` Zhang, Lei
2018-09-27 21:10 ` Richard Ruigrok
2018-09-28 10:33   ` Marc Zyngier
     [not found] ` <CACiNFG5r2Czfy_kXA2PPQa=xdyzq0vUgoQZ=XNME4d_h=O1oBw@mail.gmail.com>
2019-02-01  9:15   ` Marc Zyngier
2019-02-02  3:05     ` Xulin Sun

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