search for: enter_lazy

...che jbd2 xen_netfront xen_blkfront crc32c_intel [ 32.304734] CPU: 0 PID: 3901 Comm: dracut Not tainted 3.10.0-514.16.1.el7.x86_64 #1 [ 32.304739] task: ffff880002598000 ti: ffff88001b728000 task.ti: ffff88001b728000 [ 32.304743] RIP: e030:[<ffffffff8167eb81>] [<ffffffff8167eb81>] enter_lazy.part.0+0x4/0x6 [ 32.304755] RSP: e02b:ffff88001f803aa8 EFLAGS: 00010002 [ 32.304758] RAX: 0000000000000001 RBX: ffff88001eacd640 RCX: 00003ffffffff000 [ 32.304761] RDX: ffff880000000640 RSI: ffffc900000c8000 RDI: 0000000000000001 [ 32.304765] RBP: ffff88001f803aa8 R08: ffff88001f803b78 R09...

...============================================= --- a/arch/i386/kernel/paravirt.c +++ b/arch/i386/kernel/paravirt.c @@ -265,6 +265,69 @@ int paravirt_disable_iospace(void) } return ret; +} + +static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE; + +static void enter_lazy(enum paravirt_lazy_mode mode, struct pv_lazy_ops *ops) +{ + BUG_ON(x86_read_percpu(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); + BUG_ON(preemptible()); + + x86_write_percpu(paravirt_lazy_mode, mode); + (*ops->enter)(); +} + +static void leave_lazy(enum paravirt_lazy_mode mode, struct pv_lazy_ops...

...============================================= --- a/arch/i386/kernel/paravirt.c +++ b/arch/i386/kernel/paravirt.c @@ -265,6 +265,69 @@ int paravirt_disable_iospace(void) } return ret; +} + +static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE; + +static void enter_lazy(enum paravirt_lazy_mode mode, struct pv_lazy_ops *ops) +{ + BUG_ON(x86_read_percpu(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); + BUG_ON(preemptible()); + + x86_write_percpu(paravirt_lazy_mode, mode); + (*ops->enter)(); +} + +static void leave_lazy(enum paravirt_lazy_mode mode, struct pv_lazy_ops...

...ront crc32c_intel > [ 32.304734] CPU: 0 PID: 3901 Comm: dracut Not tainted > 3.10.0-514.16.1.el7.x86_64 #1 > [ 32.304739] task: ffff880002598000 ti: ffff88001b728000 task.ti: > ffff88001b728000 > [ 32.304743] RIP: e030:[<ffffffff8167eb81>] [<ffffffff8167eb81>] > enter_lazy.part.0+0x4/0x6 > [ 32.304755] RSP: e02b:ffff88001f803aa8 EFLAGS: 00010002 > [ 32.304758] RAX: 0000000000000001 RBX: ffff88001eacd640 RCX: > 00003ffffffff000 > [ 32.304761] RDX: ffff880000000640 RSI: ffffc900000c8000 RDI: > 0000000000000001 > [ 32.304765] RBP: ffff88001f80...

On 01/06/2018 03:16 AM, Dmitry Melekhov wrote: > The same problem with latest centos 6 kernel,i.e. with meltdown fix. > > I can't see console output, because I have it on "cloud" provider > hosting :-) > > > > 06.01.2018 05:13, Shaun Reitan ?????: >> Broken! >> >> For those of you looking for a PV enabled client Kernel for CentOS Linux

...jbd2 xen_blkfront > [? 587.145018] CPU: 0 PID: 2126 Comm: dracut Not tainted > 3.10.0-123.4.4.el7.x86_64 #1 > [? 587.145018] task: ffff880002da5b00 ti: ffff8800f6088000 task.ti: > ffff8800f6088000 > [? 587.145018] RIP: e030:[<ffffffff815da23b>]? [<ffffffff815da23b>] > enter_lazy.part.0+0x4/0x6 > [? 587.145018] RSP: e02b:ffff8800ff403ab0? EFLAGS: 00010002 > [? 587.145018] RAX: 0000000000000001 RBX: ffff8800f8ad4040 RCX: > 00003ffffffff000 > [? 587.145018] RDX: ffff880000000040 RSI: ffff880000000000 RDI: > 00000005a52cc067 > [? 587.145018] RBP: ffff8800ff40...

...====================================== --- a/arch/i386/kernel/paravirt.c +++ b/arch/i386/kernel/paravirt.c @@ -265,6 +265,49 @@ int paravirt_disable_iospace(void) } return ret; +} + +static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE; + +static inline void enter_lazy(enum paravirt_lazy_mode mode) +{ + BUG_ON(x86_read_percpu(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); + BUG_ON(preemptible()); + + x86_write_percpu(paravirt_lazy_mode, mode); +} + +void paravirt_leave_lazy(enum paravirt_lazy_mode mode) +{ + BUG_ON(x86_read_percpu(paravirt_lazy_mode) != mode); + BUG...

...====================================== --- a/arch/i386/kernel/paravirt.c +++ b/arch/i386/kernel/paravirt.c @@ -265,6 +265,49 @@ int paravirt_disable_iospace(void) } return ret; +} + +static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE; + +static inline void enter_lazy(enum paravirt_lazy_mode mode) +{ + BUG_ON(x86_read_percpu(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); + BUG_ON(preemptible()); + + x86_write_percpu(paravirt_lazy_mode, mode); +} + +void paravirt_leave_lazy(enum paravirt_lazy_mode mode) +{ + BUG_ON(x86_read_percpu(paravirt_lazy_mode) != mode); + BUG...

...pkr ip_tables ext4 mbcache jbd2 xen_blkfront [ 587.145018] CPU: 0 PID: 2126 Comm: dracut Not tainted 3.10.0-123.4.4.el7.x86_64 #1 [ 587.145018] task: ffff880002da5b00 ti: ffff8800f6088000 task.ti: ffff8800f6088000 [ 587.145018] RIP: e030:[<ffffffff815da23b>] [<ffffffff815da23b>] enter_lazy.part.0+0x4/0x6 [ 587.145018] RSP: e02b:ffff8800ff403ab0 EFLAGS: 00010002 [ 587.145018] RAX: 0000000000000001 RBX: ffff8800f8ad4040 RCX: 00003ffffffff000 [ 587.145018] RDX: ffff880000000040 RSI: ffff880000000000 RDI: 00000005a52cc067 [ 587.145018] RBP: ffff8800ff403ab0 R08: ffff8800ff403b78 R...

Hi folks, With this series, the bulk of the work of pvops64 is done. Here, I integrate most of the paravirt.c and paravirt.h files, making them applicable to both architectures. CONFIG_PARAVIRT is _not_ present yet. Basically, this code is missing page table integration (patches currently being worked on by Jeremy). Enjoy

Hi folks, With this series, the bulk of the work of pvops64 is done. Here, I integrate most of the paravirt.c and paravirt.h files, making them applicable to both architectures. CONFIG_PARAVIRT is _not_ present yet. Basically, this code is missing page table integration (patches currently being worked on by Jeremy). Enjoy

...* - * Note that this must be called very early to have any effect. - */ -int paravirt_disable_iospace(void) -{ - return request_resource(&ioport_resource, &reserve_ioports); -} - static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE; static inline void enter_lazy(enum paravirt_lazy_mode mode) -- 2.12.0

Today paravirtualization is a all-or-nothing game: either a kernel is compiled with no paravirtualization support at all, or it is supporting paravirtualized environments like Xen pv-guests or lguest additionally to some paravirtualized tuning for KVM, Hyperv, VMWare or Xen HVM-guests. As support of pv-guests requires quite intrusive pv-hooks (e.g. all access functions to page table entries,

Today paravirtualization is a all-or-nothing game: either a kernel is compiled with no paravirtualization support at all, or it is supporting paravirtualized environments like Xen pv-guests or lguest additionally to some paravirtualized tuning for KVM, Hyperv, VMWare or Xen HVM-guests. As support of pv-guests requires quite intrusive pv-hooks (e.g. all access functions to page table entries,

Hi Linus, Here's a set of patches to update paravirt_ops and Xen for 2.6.24 A quick overview of the patchset: paravirt_ops: Remove the monolithic paravirt_ops structure, and replace it with smaller structures of related functions. Also, clean up the handling of lazy mode to make it easier to implement. x86/mm/init.c: remove a chunk of dead code Xen: - remove duplicate includes -

Hi Linus, Here's a set of patches to update paravirt_ops and Xen for 2.6.24 A quick overview of the patchset: paravirt_ops: Remove the monolithic paravirt_ops structure, and replace it with smaller structures of related functions. Also, clean up the handling of lazy mode to make it easier to implement. x86/mm/init.c: remove a chunk of dead code Xen: - remove duplicate includes -

Hi Linus, Here's a set of patches to update paravirt_ops and Xen for 2.6.24 A quick overview of the patchset: paravirt_ops: Remove the monolithic paravirt_ops structure, and replace it with smaller structures of related functions. Also, clean up the handling of lazy mode to make it easier to implement. x86/mm/init.c: remove a chunk of dead code Xen: - remove duplicate includes -