From: Jack Steiner <steiner@sgi.com>
To: mingo@elte.hu, tglx@linutronix.de
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH] x86, UV: Delete mapping of MMR rangs mapped by BIOS
Date: Mon, 27 Jul 2009 09:36:56 -0500 [thread overview]
Message-ID: <20090727143656.GA7698@sgi.com> (raw)
The UV BIOS has added additional MMR ranges that
are mapped via EFI virtual mode mappings. These ranges
should be deleted from ranges mapped by uv_system_init().
Signed-off-by: Jack Steiner <steiner@sgi.com>
---
arch/x86/kernel/apic/x2apic_uv_x.c | 31 +------------------------------
1 file changed, 1 insertion(+), 30 deletions(-)
Index: linux/arch/x86/kernel/apic/x2apic_uv_x.c
===================================================================
--- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c 2009-07-23 09:44:41.000000000 -0500
+++ linux/arch/x86/kernel/apic/x2apic_uv_x.c 2009-07-23 09:45:34.000000000 -0500
@@ -363,12 +363,6 @@ static __init void get_lowmem_redirect(u
panic("get_lowmem_redirect: no match!");
}
-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);
-}
-
enum map_type {map_wb, map_uc};
static __init void map_high(char *id, unsigned long base, int shift,
@@ -396,26 +390,6 @@ static __init void map_gru_high(int max_
map_high("GRU", gru.s.base, shift, max_pnode, map_wb);
}
-static __init void map_config_high(int max_pnode)
-{
- union uvh_rh_gam_cfg_overlay_config_mmr_u cfg;
- int shift = UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR_BASE_SHFT;
-
- cfg.v = uv_read_local_mmr(UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR);
- if (cfg.s.enable)
- map_high("CONFIG", cfg.s.base, shift, max_pnode, map_uc);
-}
-
-static __init void map_mmr_high(int max_pnode)
-{
- union uvh_rh_gam_mmr_overlay_config_mmr_u mmr;
- int shift = UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR_BASE_SHFT;
-
- mmr.v = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR);
- if (mmr.s.enable)
- map_high("MMR", mmr.s.base, shift, max_pnode, map_uc);
-}
-
static __init void map_mmioh_high(int max_pnode)
{
union uvh_rh_gam_mmioh_overlay_config_mmr_u mmioh;
@@ -567,8 +541,6 @@ void __init uv_system_init(void)
unsigned long mmr_base, present, paddr;
unsigned short pnode_mask;
- map_low_mmrs();
-
m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
m_val = m_n_config.s.m_skt;
n_val = m_n_config.s.n_skt;
@@ -668,11 +640,10 @@ void __init uv_system_init(void)
pnode = (paddr >> m_val) & pnode_mask;
blade = boot_pnode_to_blade(pnode);
uv_node_to_blade[nid] = blade;
+ max_pnode = max(pnode, max_pnode);
}
map_gru_high(max_pnode);
- map_mmr_high(max_pnode);
- map_config_high(max_pnode);
map_mmioh_high(max_pnode);
uv_cpu_init();
--
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reply other threads:[~2009-07-27 14:36 UTC|newest]
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