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....com/show_bug.cgi?id=1025868 (#GP exception on wrmsr(0x410, 0xfffffffffffffbff) during MCE initialization) --- arch/x86/include/asm/paravirt.h | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..7d42ca4 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -133,24 +133,27 @@ static inline int paravirt_write_msr(unsigned msr, unsigned low, unsigned high) return PVOP_CALL3(int, pv_cpu_ops.write_msr, msr, low, high); } -/* These should all do BUG_ON(_err)...

....com/show_bug.cgi?id=1025868 (#GP exception on wrmsr(0x410, 0xfffffffffffffbff) during MCE initialization) --- arch/x86/include/asm/paravirt.h | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..7d42ca4 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -133,24 +133,27 @@ static inline int paravirt_write_msr(unsigned msr, unsigned low, unsigned high) return PVOP_CALL3(int, pv_cpu_ops.write_msr, msr, low, high); } -/* These should all do BUG_ON(_err)...

...+++ arch/x86/kernel/paravirt-spinlocks.c | 4 + kernel/locking/qspinlock.c | 41 +++++++- 5 files changed, 235 insertions(+), 7 deletions(-) create mode 100644 arch/x86/include/asm/pvqspinlock.h diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..06d3279 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -711,7 +711,12 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, } #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) - +#ifdef CONFIG_QUEUE_SPINLOCK +stat...

...directly from userspace + without using a kernel driver. Unless you intend to run such + software, you can safely say N here. + config TOSHIBA tristate "Toshiba Laptop support" depends on X86_32 diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..52d2ec8 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -299,10 +299,12 @@ static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g) { PVOP_VCALL3(pv_cpu_ops.write_idt_entry, dt, entry, g); } +#ifdef CONFIG_X86_IOPORT static inline...

...directly from userspace + without using a kernel driver. Unless you intend to run such + software, you can safely say N here. + config TOSHIBA tristate "Toshiba Laptop support" depends on X86_32 diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..52d2ec8 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -299,10 +299,12 @@ static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g) { PVOP_VCALL3(pv_cpu_ops.write_idt_entry, dt, entry, g); } +#ifdef CONFIG_X86_IOPORT static inline...

...ch/x86/kernel/paravirt-spinlocks.c | 5 + kernel/locking/qspinlock.c | 96 ++++++++++++++- 6 files changed, 390 insertions(+), 2 deletions(-) create mode 100644 arch/x86/include/asm/pvqspinlock.h diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..cabc37a 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -711,7 +711,17 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, } #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) +#ifdef CONFIG_QUEUE_SPINLOCK +static...

...directly from userspace + without using a kernel driver. Unless you intend to run such + software, you can safely say N here. + config TOSHIBA tristate "Toshiba Laptop support" depends on X86_32 diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..52d2ec8 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -299,10 +299,12 @@ static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g) { PVOP_VCALL3(pv_cpu_ops.write_idt_entry, dt, entry, g); } +#ifdef CONFIG_X86_IOPORT static inline...

The 32-bit and 64-bit versions of copy_thread have functionally identical handling for copying the I/O bitmap, modulo differences in error handling. Clean up the error paths in both by moving the copy of the I/O bitmap to the end, to eliminate the need to free it if subsequent copy steps fail; move the resulting identical code to a static inline in a common header. Signed-off-by: Josh Triplett

The 32-bit and 64-bit versions of copy_thread have functionally identical handling for copying the I/O bitmap, modulo differences in error handling. Clean up the error paths in both by moving the copy of the I/O bitmap to the end, to eliminate the need to free it if subsequent copy steps fail; move the resulting identical code to a static inline in a common header. Signed-off-by: Josh Triplett

...river. Unless you intend to run such > + software, you can safely say N here. > + > config TOSHIBA > tristate "Toshiba Laptop support" > depends on X86_32 > diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h > index cd6e161..52d2ec8 100644 > --- a/arch/x86/include/asm/paravirt.h > +++ b/arch/x86/include/asm/paravirt.h > @@ -299,10 +299,12 @@ static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g) > { > PVOP_VCALL3(pv_cpu_ops.write_idt_entry, dt, entry, g); > } >...

...directly from userspace + without using a kernel driver. Unless you intend to run such + software, you can safely say N here. + config TOSHIBA tristate "Toshiba Laptop support" depends on X86_32 diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..52d2ec8 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -299,10 +299,12 @@ static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g) { PVOP_VCALL3(pv_cpu_ops.write_idt_entry, dt, entry, g); } +#ifdef CONFIG_X86_IOPORT static inline...

...directly from userspace + without using a kernel driver. Unless you intend to run such + software, you can safely say N here. + config TOSHIBA tristate "Toshiba Laptop support" depends on X86_32 diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..52d2ec8 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -299,10 +299,12 @@ static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g) { PVOP_VCALL3(pv_cpu_ops.write_idt_entry, dt, entry, g); } +#ifdef CONFIG_X86_IOPORT static inline...

...+++- arch/x86/kernel/paravirt-spinlocks.c | 6 + kernel/locking/qspinlock.c | 72 ++++++- 6 files changed, 558 insertions(+), 7 deletions(-) create mode 100644 arch/x86/include/asm/pvqspinlock.h diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..3b041db 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -712,6 +712,25 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) +#ifdef CONFIG_QUEUE_SPINLOCK + +stati...

...+++- arch/x86/kernel/paravirt-spinlocks.c | 6 + kernel/locking/qspinlock.c | 72 ++++++- 6 files changed, 558 insertions(+), 7 deletions(-) create mode 100644 arch/x86/include/asm/pvqspinlock.h diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..3b041db 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -712,6 +712,25 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) +#ifdef CONFIG_QUEUE_SPINLOCK + +stati...

The 32-bit and 64-bit versions of copy_thread have functionally identical handling for copying the I/O bitmap, modulo differences in error handling. Clean up the error paths in both by moving the copy of the I/O bitmap to the end, to eliminate the need to free it if subsequent copy steps fail; move the resulting identical code to a static inline in a common header. Signed-off-by: Josh Triplett

The 32-bit and 64-bit versions of copy_thread have functionally identical handling for copying the I/O bitmap, modulo differences in error handling. Clean up the error paths in both by moving the copy of the I/O bitmap to the end, to eliminate the need to free it if subsequent copy steps fail; move the resulting identical code to a static inline in a common header. Signed-off-by: Josh Triplett

...6 + include/asm-generic/qspinlock.h | 2 + kernel/locking/qspinlock.c | 69 +++++- 7 files changed, 591 insertions(+), 7 deletions(-) create mode 100644 arch/x86/include/asm/pvqspinlock.h diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..7e296e6 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -712,6 +712,24 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) +#ifdef CONFIG_QUEUE_SPINLOCK + +stati...

...6 + include/asm-generic/qspinlock.h | 2 + kernel/locking/qspinlock.c | 69 +++++- 7 files changed, 591 insertions(+), 7 deletions(-) create mode 100644 arch/x86/include/asm/pvqspinlock.h diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cd6e161..7e296e6 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -712,6 +712,24 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) +#ifdef CONFIG_QUEUE_SPINLOCK + +stati...

This patch series makes it possible to compile out the userspace IO system calls, iopl and ioperm. The first patch does some 32/64 unification in copy_thread to make subsequent changes easier. The second patch simplifies the complex calculation of the TSS segment limit, which also makes it easier to change in the last patch. Patches 3-9 introduce helpers to make it easier to compile out IO.

This patch series makes it possible to compile out the userspace IO system calls, iopl and ioperm. The first patch does some 32/64 unification in copy_thread to make subsequent changes easier. The second patch simplifies the complex calculation of the TSS segment limit, which also makes it easier to change in the last patch. Patches 3-9 introduce helpers to make it easier to compile out IO.