linux-kernel - [patch 11/12 v4] x86: reserve setup_data ranges late after parsing memmap cmdline

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Message-Id: <20131125090039.610406184@dhcp-16-126.nay.redhat.com>
Date:	Mon, 25 Nov 2013 16:56:41 +0800
From:	dyoung@...hat.com
To:	linux-kernel@...r.kernel.org
Cc:	linux-efi@...r.kernel.org, x86@...nel.org, mjg59@...f.ucam.org,
	hpa@...or.com, James.Bottomley@...senPartnership.com,
	vgoyal@...hat.com, ebiederm@...ssion.com, horms@...ge.net.au,
	kexec@...ts.infradead.org, bp@...en8.de, greg@...ah.com,
	matt@...sole-pimps.org, toshi.kani@...com,
	Dave Young <dyoung@...hat.com>
Subject: [patch 11/12 v4] x86: reserve setup_data ranges late after parsing memmap cmdline

Hi,
References: <20131125085630.417850406@...p-16-126.nay.redhat.com>
Content-Disposition: inline; filename=11-reserve-setup-data-late.patch

Kdump kernel using memmap=exactmap, move e820_reserve_setup_data after
parsing early params so they can be set reserved finally. Or kdump kernel
will warn about ioremap a normal ram range.

Signed-off-by: Dave Young <dyoung@...hat.com>
---
 arch/x86/kernel/setup.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- efi.orig/arch/x86/kernel/setup.c
+++ efi/arch/x86/kernel/setup.c
@@ -927,8 +927,6 @@ void __init setup_arch(char **cmdline_p)
 	iomem_resource.end = (1ULL << boot_cpu_data.x86_phys_bits) - 1;
 	setup_memory_map();
 	parse_setup_data();
-	/* update the e820_saved too */
-	e820_reserve_setup_data();
 
 	copy_edd();
 
@@ -990,6 +988,8 @@ void __init setup_arch(char **cmdline_p)
 		early_dump_pci_devices();
 #endif
 
+	/* update the e820_saved too */
+	e820_reserve_setup_data();
 	finish_e820_parsing();
 
 	if (efi_enabled(EFI_BOOT))

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