search for: entry_32

There is no need to include pv-guest only object files in a kernel not configured to support those. Move Xen's irq.o, xen-asm*.o and pv parts of entry_*.o into CONFIG_XEN_PV sections. Signed-off-by: Juergen Gross <jgross at suse.com> --- arch/x86/entry/entry_32.S | 4 +++- arch/x86/entry/entry_64.S | 6 ++++-- arch/x86/xen/Makefile | 8 ++++---- 3 files changed, 11 insertions(+), 7 deletions(-) diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S index 50bc26949e9e..37ae4a7809d9 100644 --- a/arch/x86/entry/entry_32.S +++ b/arch/x86/entr...

...thing for compat mode even though stack does not need to be fixed. This will allow us to drop usergs_sysret32 paravirt op (in the subsequent patch) Signed-off-by: Boris Ostrovsky <boris.ostrovsky at oracle.com> Suggested-by: Andy Lutomirski <luto at amacapital.net> --- arch/x86/entry/entry_32.S | 3 ++- arch/x86/entry/entry_64_compat.S | 6 ++++-- arch/x86/include/asm/cpufeature.h | 1 + arch/x86/xen/enlighten.c | 4 +++- 4 files changed, 10 insertions(+), 4 deletions(-) diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S index 3eb572e..901f186 100644 -...

...ue for orig_ax. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Acked-by: Jan Beulich <JBeulich@suse.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Cc: stable@vger.kernel.org --- v3: - fixup the right push in the 32-bit xen_failsafe_callback(). --- arch/x86/kernel/entry_32.S | 8 +++++--- arch/x86/kernel/entry_64.S | 2 +- 2 files changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 2c63407..985f7b3 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -1042,7 +1042,7 @@ ENTRY...

...patch irq_enable_sysexit and usergs_sysret32 pv ops are not used anymore by anyone and so can be removed. Boris Ostrovsky (3): x86/xen: Avoid fast syscall path for Xen PV guests x86: irq_enable_sysexit pv op is no longer needed x86: usergs_sysret32 pv op is no longer needed arch/x86/entry/entry_32.S | 11 ++++------- arch/x86/entry/entry_64_compat.S | 16 ++++++---------- arch/x86/include/asm/cpufeature.h | 1 + arch/x86/include/asm/paravirt.h | 12 ------------ arch/x86/include/asm/paravirt_types.h | 17 ----------------- arch/x86/kernel/asm-offsets.c |...

...patch irq_enable_sysexit and usergs_sysret32 pv ops are not used anymore by anyone and so can be removed. Boris Ostrovsky (3): x86/xen: Avoid fast syscall path for Xen PV guests x86: irq_enable_sysexit pv op is no longer needed x86: usergs_sysret32 pv op is no longer needed arch/x86/entry/entry_32.S | 11 ++++------- arch/x86/entry/entry_64_compat.S | 16 ++++++---------- arch/x86/include/asm/cpufeature.h | 1 + arch/x86/include/asm/paravirt.h | 12 ------------ arch/x86/include/asm/paravirt_types.h | 17 ----------------- arch/x86/kernel/asm-offsets.c |...

...at zytor.com> Cc: Ananth N Mavinakayanahalli <ananth at in.ibm.com> Cc: Al Viro <viro at zeniv.linux.org.uk> Cc: Seiji Aguchi <seiji.aguchi at hds.com> Cc: Peter Zijlstra <peterz at infradead.org> Cc: Frederic Weisbecker <fweisbec at gmail.com> --- arch/x86/kernel/entry_32.S | 33 --------------------------------- arch/x86/kernel/entry_64.S | 20 -------------------- kernel/kprobes.c | 10 +++++----- 3 files changed, 5 insertions(+), 58 deletions(-) diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 51e2988..02c2fef 100644 ---...

...T path directly > to xen_iret. > > We can do the same thing for compat mode even though stack does not need > to be fixed. This will allow us to drop usergs_sysret32 paravirt op (in > the subsequent patch) Looks generally quite nice. Minor comments below: > --- a/arch/x86/entry/entry_32.S > +++ b/arch/x86/entry/entry_32.S > @@ -308,7 +308,8 @@ sysenter_past_esp: > > movl %esp, %eax > call do_fast_syscall_32 > - testl %eax, %eax > + /* XEN PV guests always use IRET path */ > + ALTERNATIVE "testl %eax, %eax"...

...T path directly > to xen_iret. > > We can do the same thing for compat mode even though stack does not need > to be fixed. This will allow us to drop usergs_sysret32 paravirt op (in > the subsequent patch) Looks generally quite nice. Minor comments below: > --- a/arch/x86/entry/entry_32.S > +++ b/arch/x86/entry/entry_32.S > @@ -308,7 +308,8 @@ sysenter_past_esp: > > movl %esp, %eax > call do_fast_syscall_32 > - testl %eax, %eax > + /* XEN PV guests always use IRET path */ > + ALTERNATIVE "testl %eax, %eax"...

.../proc/cpuinfo * Clarify in commit messages why irq_enable_sysexit and usergs_sysret32 are removed Boris Ostrovsky (3): x86/xen: Avoid fast syscall path for Xen PV guests x86: irq_enable_sysexit pv op is no longer needed x86: usergs_sysret32 pv op is no longer needed arch/x86/entry/entry_32.S | 13 +++++-------- arch/x86/entry/entry_64_compat.S | 20 ++++++++------------ arch/x86/include/asm/cpufeature.h | 1 + arch/x86/include/asm/paravirt.h | 12 ------------ arch/x86/include/asm/paravirt_types.h | 17 ----------------- arch/x86/kernel/asm-offsets.c...

.../proc/cpuinfo * Clarify in commit messages why irq_enable_sysexit and usergs_sysret32 are removed Boris Ostrovsky (3): x86/xen: Avoid fast syscall path for Xen PV guests x86: irq_enable_sysexit pv op is no longer needed x86: usergs_sysret32 pv op is no longer needed arch/x86/entry/entry_32.S | 13 +++++-------- arch/x86/entry/entry_64_compat.S | 20 ++++++++------------ arch/x86/include/asm/cpufeature.h | 1 + arch/x86/include/asm/paravirt.h | 12 ------------ arch/x86/include/asm/paravirt_types.h | 17 ----------------- arch/x86/kernel/asm-offsets.c...

Xen PV guests have been the only ones using it and now they don't. Signed-off-by: Boris Ostrovsky <boris.ostrovsky at oracle.com> --- arch/x86/entry/entry_32.S | 8 ++------ arch/x86/include/asm/paravirt.h | 7 ------- arch/x86/include/asm/paravirt_types.h | 9 --------- arch/x86/kernel/asm-offsets.c | 3 --- arch/x86/kernel/paravirt.c | 7 ------- arch/x86/kernel/paravirt_patch_32.c | 2 -- arch/x86/kernel/p...

The ALTERNATIVE() and ALTERNATIVE_2() macros are GNU assembler macros, which makes them quite inflexible for future changes. Convert them to preprocessor macros. Signed-off-by: Josh Poimboeuf <jpoimboe at redhat.com> --- arch/x86/entry/entry_32.S | 12 +++--- arch/x86/entry/entry_64.S | 10 ++--- arch/x86/entry/entry_64_compat.S | 8 ++-- arch/x86/entry/vdso/vdso32/system_call.S | 10 ++--- arch/x86/include/asm/alternative-asm.h | 68 +++++++++++++++----------------- arch/x86/include/asm/smap.h...

...he previous discussion, I just make this series as RFC series. I'd like to ask again with actual implementation and plan. Thank you, --- Masami Hiramatsu (2): kprobes: Prohibit probing on .entry.text code kprobes: Introduce NOKPROBE_SYMBOL() macro for blacklist arch/x86/kernel/entry_32.S | 33 ------------ arch/x86/kernel/entry_64.S | 20 -------- arch/x86/kernel/paravirt.c | 4 ++ include/asm-generic/vmlinux.lds.h | 9 +++ include/linux/kprobes.h | 19 +++++++ kernel/kprobes.c | 98 ++++++++++++++++++------------------...

...he previous discussion, I just make this series as RFC series. I'd like to ask again with actual implementation and plan. Thank you, --- Masami Hiramatsu (2): kprobes: Prohibit probing on .entry.text code kprobes: Introduce NOKPROBE_SYMBOL() macro for blacklist arch/x86/kernel/entry_32.S | 33 ------------ arch/x86/kernel/entry_64.S | 20 -------- arch/x86/kernel/paravirt.c | 4 ++ include/asm-generic/vmlinux.lds.h | 9 +++ include/linux/kprobes.h | 19 +++++++ kernel/kprobes.c | 98 ++++++++++++++++++------------------...

The paravirt.h file is quite big and the asm interfaces for paravirt don't need to be in the same file as the C interfaces. Move the asm interfaces to a dedicated header file. Signed-off-by: Josh Poimboeuf <jpoimboe at redhat.com> --- arch/x86/entry/entry_32.S | 1 + arch/x86/entry/entry_64.S | 2 +- arch/x86/entry/entry_64_compat.S | 1 + arch/x86/include/asm/paravirt-asm.h | 126 ++++++++++++++++++++++++++++++++++ arch/x86/include/asm/paravirt.h | 132 +++--------------------------------- arch/x86/kernel/head_64.S...

...inux-foundation.org Cc: xen-devel at lists.xenproject.org Link: http://lkml.kernel.org/r/1447970147-1733-3-git-send-email-boris.ostrovsky at oracle.com Signed-off-by: Ingo Molnar <mingo at kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org> --- arch/x86/entry/entry_32.S | 8 ++------ arch/x86/include/asm/paravirt.h | 7 ------- arch/x86/include/asm/paravirt_types.h | 9 --------- arch/x86/kernel/asm-offsets.c | 3 --- arch/x86/kernel/paravirt.c | 7 ------- arch/x86/kernel/paravirt_patch_32.c | 2 -- arch/...

...n do the same thing for compat mode even though stack does not need >>> to be fixed. This will allow us to drop usergs_sysret32 paravirt op (in >>> the subsequent patch) >> >> Looks generally quite nice. Minor comments below: >> >>> --- a/arch/x86/entry/entry_32.S >>> +++ b/arch/x86/entry/entry_32.S >>> @@ -308,7 +308,8 @@ sysenter_past_esp: >>> >>> movl %esp, %eax >>> call do_fast_syscall_32 >>> - testl %eax, %eax >>> + /* XEN PV guests always use IRET path...

...>> >> We can do the same thing for compat mode even though stack does not need >> to be fixed. This will allow us to drop usergs_sysret32 paravirt op (in >> the subsequent patch) > > Looks generally quite nice. Minor comments below: > >> --- a/arch/x86/entry/entry_32.S >> +++ b/arch/x86/entry/entry_32.S >> @@ -308,7 +308,8 @@ sysenter_past_esp: >> >> movl %esp, %eax >> call do_fast_syscall_32 >> - testl %eax, %eax >> + /* XEN PV guests always use IRET path */ >> + ALTERNAT...

...inux-foundation.org Cc: xen-devel at lists.xenproject.org Link: http://lkml.kernel.org/r/1447970147-1733-3-git-send-email-boris.ostrovsky at oracle.com Signed-off-by: Ingo Molnar <mingo at kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org> --- arch/x86/entry/entry_32.S | 8 ++------ arch/x86/include/asm/paravirt.h | 7 ------- arch/x86/include/asm/paravirt_types.h | 9 --------- arch/x86/kernel/asm-offsets.c | 3 --- arch/x86/kernel/paravirt.c | 7 ------- arch/x86/kernel/paravirt_patch_32.c | 2 -- arch/...

Hi folks, Here is the result of the latest work on the pvops front, after the x86 arch merge. From the functionality point of view, almost nothing was changed, except for proper vsmp support - which was discussed, but not implemented before - and the introduction of smp_ops in x86_64, which eased the merging of the smp header. Speaking of the merge, a significant part (although not majority) of