| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 28 Jan 2009 23:42:10 +0000
From: Ingo Molnar <mingo@...e.hu>
To: linux-kernel@...r.kernel.org
Cc: "H. Peter Anvin" <hpa@...or.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...e.hu>
Subject: [PATCH 064/114] x86, smp: refactor ->store/restore_NMI_vector() methods
Only NUMAQ does something substantial here, because it initializes
via NMIs (not via INIT as standard SMP startup) - so it needs to
store and restore the NMI vector.
- extend the generic code to handle NULL methods
- clear out dummy methods and replace them with NULL
- clean up: remove wrapper macros, etc.
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
arch/x86/include/asm/es7000/wakecpu.h | 8 --------
arch/x86/include/asm/mach-default/mach_wakecpu.h | 8 --------
arch/x86/include/asm/mach-generic/mach_wakecpu.h | 2 --
arch/x86/include/asm/numaq/wakecpu.h | 6 ++++--
arch/x86/kernel/smpboot.c | 3 ++-
arch/x86/mach-generic/bigsmp.c | 5 ++---
arch/x86/mach-generic/default.c | 4 ++--
arch/x86/mach-generic/es7000.c | 5 ++---
arch/x86/mach-generic/numaq.c | 4 ++--
arch/x86/mach-generic/summit.c | 5 ++---
10 files changed, 16 insertions(+), 34 deletions(-)
diff --git a/arch/x86/include/asm/es7000/wakecpu.h b/arch/x86/include/asm/es7000/wakecpu.h
index e8e0396..71a3a41 100644
--- a/arch/x86/include/asm/es7000/wakecpu.h
+++ b/arch/x86/include/asm/es7000/wakecpu.h
@@ -13,14 +13,6 @@ static inline void es7000_wait_for_init_deassert(atomic_t *deassert)
return;
}
-static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
-{
-}
-
-static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
-{
-}
-
extern void __inquire_remote_apic(int apicid);
static inline void inquire_remote_apic(int apicid)
diff --git a/arch/x86/include/asm/mach-default/mach_wakecpu.h b/arch/x86/include/asm/mach-default/mach_wakecpu.h
index d059807..656bb5e 100644
--- a/arch/x86/include/asm/mach-default/mach_wakecpu.h
+++ b/arch/x86/include/asm/mach-default/mach_wakecpu.h
@@ -8,14 +8,6 @@ static inline void default_wait_for_init_deassert(atomic_t *deassert)
return;
}
-static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
-{
-}
-
-static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
-{
-}
-
#ifdef CONFIG_SMP
extern void __inquire_remote_apic(int apicid);
#else /* CONFIG_SMP */
diff --git a/arch/x86/include/asm/mach-generic/mach_wakecpu.h b/arch/x86/include/asm/mach-generic/mach_wakecpu.h
index 30515a1..93207df 100644
--- a/arch/x86/include/asm/mach-generic/mach_wakecpu.h
+++ b/arch/x86/include/asm/mach-generic/mach_wakecpu.h
@@ -1,8 +1,6 @@
#ifndef _ASM_X86_MACH_GENERIC_MACH_WAKECPU_H
#define _ASM_X86_MACH_GENERIC_MACH_WAKECPU_H
-#define store_NMI_vector (apic->store_NMI_vector)
-#define restore_NMI_vector (apic->restore_NMI_vector)
#define inquire_remote_apic (apic->inquire_remote_apic)
#endif /* _ASM_X86_MACH_GENERIC_MACH_APIC_H */
diff --git a/arch/x86/include/asm/numaq/wakecpu.h b/arch/x86/include/asm/numaq/wakecpu.h
index 61d0a7d..1232017 100644
--- a/arch/x86/include/asm/numaq/wakecpu.h
+++ b/arch/x86/include/asm/numaq/wakecpu.h
@@ -15,7 +15,8 @@ static inline void numaq_smp_callin_clear_local_apic(void)
clear_local_APIC();
}
-static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
+static inline void
+numaq_store_NMI_vector(unsigned short *high, unsigned short *low)
{
printk("Storing NMI vector\n");
*high =
@@ -24,7 +25,8 @@ static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
*((volatile unsigned short *)phys_to_virt(NUMAQ_TRAMPOLINE_PHYS_LOW));
}
-static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
+static inline void
+numaq_restore_NMI_vector(unsigned short *high, unsigned short *low)
{
printk("Restoring NMI vector\n");
*((volatile unsigned short *)phys_to_virt(NUMAQ_TRAMPOLINE_PHYS_HIGH)) =
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 10873a4..1492024 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -826,7 +826,8 @@ do_rest:
pr_debug("Setting warm reset code and vector.\n");
- store_NMI_vector(&nmi_high, &nmi_low);
+ if (apic->store_NMI_vector)
+ apic->store_NMI_vector(&nmi_high, &nmi_low);
smpboot_setup_warm_reset_vector(start_ip);
/*
diff --git a/arch/x86/mach-generic/bigsmp.c b/arch/x86/mach-generic/bigsmp.c
index bd069e7..ecdb230 100644
--- a/arch/x86/mach-generic/bigsmp.c
+++ b/arch/x86/mach-generic/bigsmp.c
@@ -110,8 +110,7 @@ struct genapic apic_bigsmp = {
.wait_for_init_deassert = default_wait_for_init_deassert,
.smp_callin_clear_local_apic = NULL,
-
- .store_NMI_vector = store_NMI_vector,
- .restore_NMI_vector = restore_NMI_vector,
+ .store_NMI_vector = NULL,
+ .restore_NMI_vector = NULL,
.inquire_remote_apic = inquire_remote_apic,
};
diff --git a/arch/x86/mach-generic/default.c b/arch/x86/mach-generic/default.c
index a25e6ef..9509256 100644
--- a/arch/x86/mach-generic/default.c
+++ b/arch/x86/mach-generic/default.c
@@ -91,7 +91,7 @@ struct genapic apic_default = {
.wait_for_init_deassert = default_wait_for_init_deassert,
.smp_callin_clear_local_apic = NULL,
- .store_NMI_vector = store_NMI_vector,
- .restore_NMI_vector = restore_NMI_vector,
+ .store_NMI_vector = NULL,
+ .restore_NMI_vector = NULL,
.inquire_remote_apic = inquire_remote_apic,
};
diff --git a/arch/x86/mach-generic/es7000.c b/arch/x86/mach-generic/es7000.c
index ab41b54..1319070 100644
--- a/arch/x86/mach-generic/es7000.c
+++ b/arch/x86/mach-generic/es7000.c
@@ -147,8 +147,7 @@ struct genapic apic_es7000 = {
/* Nothing to do for most platforms, since cleared by the INIT cycle: */
.smp_callin_clear_local_apic = NULL,
-
- .store_NMI_vector = store_NMI_vector,
- .restore_NMI_vector = restore_NMI_vector,
+ .store_NMI_vector = NULL,
+ .restore_NMI_vector = NULL,
.inquire_remote_apic = inquire_remote_apic,
};
diff --git a/arch/x86/mach-generic/numaq.c b/arch/x86/mach-generic/numaq.c
index 4d3924f..d7f7fcf 100644
--- a/arch/x86/mach-generic/numaq.c
+++ b/arch/x86/mach-generic/numaq.c
@@ -111,7 +111,7 @@ struct genapic apic_numaq = {
.wait_for_init_deassert = NULL,
.smp_callin_clear_local_apic = numaq_smp_callin_clear_local_apic,
- .store_NMI_vector = store_NMI_vector,
- .restore_NMI_vector = restore_NMI_vector,
+ .store_NMI_vector = numaq_store_NMI_vector,
+ .restore_NMI_vector = numaq_restore_NMI_vector,
.inquire_remote_apic = inquire_remote_apic,
};
diff --git a/arch/x86/mach-generic/summit.c b/arch/x86/mach-generic/summit.c
index 2595baa..46fca79 100644
--- a/arch/x86/mach-generic/summit.c
+++ b/arch/x86/mach-generic/summit.c
@@ -90,8 +90,7 @@ struct genapic apic_summit = {
.wait_for_init_deassert = default_wait_for_init_deassert,
.smp_callin_clear_local_apic = NULL,
-
- .store_NMI_vector = store_NMI_vector,
- .restore_NMI_vector = restore_NMI_vector,
+ .store_NMI_vector = NULL,
+ .restore_NMI_vector = NULL,
.inquire_remote_apic = inquire_remote_apic,
};
--
1.6.0.2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists