linux-kernel - [PATCH 2/2] Remove extra mapping code for UV MMRs

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Date:	Mon, 16 Nov 2015 11:59:41 -0600
From:	Alex Thorlton <athorlton@....com>
To:	linux-kernel@...r.kernel.org
Cc:	Alex Thorlton <athorlton@....com>,
	Matt Fleming <matt.fleming@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, Hedi Berriche <hedi@....com>,
	Dimitri Sivanich <sivanich@....com>, x86@...nel.org,
	linux-efi@...r.kernel.org
Subject: [PATCH 2/2] Remove extra mapping code for UV MMRs

These MMRs get mapped in correctly using the new EFI memmap scheme on
recent BIOSes, so we no longer need to set up these extra mappings for
them.

Signed-off-by: Alex Thorlton <athorlton@....com>
Acked-by: Mike Travis <travis@....com>
Acked-by: Russ Anderson <rja@....com>
Cc: Matt Fleming <matt.fleming@...el.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: Hedi Berriche <hedi@....com>
Cc: Dimitri Sivanich <sivanich@....com>
Cc: x86@...nel.org
Cc: linux-efi@...r.kernel.org

---
 arch/x86/kernel/apic/x2apic_uv_x.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index c8d9295..e8db45d 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -712,12 +712,6 @@ static __init void map_mmioh_high(int min_pnode, int max_pnode)
 	}
 }
 
-static __init void map_low_mmrs(void)
-{
-	init_extra_mapping_uc(UV_GLOBAL_MMR32_BASE, UV_GLOBAL_MMR32_SIZE);
-	init_extra_mapping_uc(UV_LOCAL_MMR_BASE, UV_LOCAL_MMR_SIZE);
-}
-
 static __init void uv_rtc_init(void)
 {
 	long status;
@@ -890,7 +884,6 @@ void __init uv_system_init(void)
 		return;
 	}
 	pr_info("UV: Found %s hub\n", hub);
-	map_low_mmrs();
 
 	m_n_config.v = uv_read_local_mmr(UVH_RH_GAM_CONFIG_MMR );
 	m_val = m_n_config.s.m_skt;
-- 
1.8.5.6

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