similar to: [PATCH] Dom0: Fix bad pte at booting time

While shuffling quite a few things around, this gets us closer to native, which clearly had a reason to do the DMI scan early. Signed-off-by: Jan Beulich <jbeulich@novell.com> Index: head-2007-02-08/arch/i386/mm/ioremap-xen.c =================================================================== --- head-2007-02-08.orig/arch/i386/mm/ioremap-xen.c 2007-02-08 17:07:13.000000000 +0100 +++

Pardon my unorganized cc:'s. ---------- Forwarded message ---------- From: Charles 'Mack' Rhinelander <mrhinelander at gmail.com> Date: Sun, May 31, 2009 at 1:39 AM Subject: Fwd: BUG: Documentation/lguest/lguest.c bad paths for includes cause make to fail To: linux-kernel at vger.kernel.org Cc: Andrew Morton <akpm at osdl.org>, lguest at ozlabs.org ---------- Forwarded

Pardon my unorganized cc:'s. ---------- Forwarded message ---------- From: Charles 'Mack' Rhinelander <mrhinelander at gmail.com> Date: Sun, May 31, 2009 at 1:39 AM Subject: Fwd: BUG: Documentation/lguest/lguest.c bad paths for includes cause make to fail To: linux-kernel at vger.kernel.org Cc: Andrew Morton <akpm at osdl.org>, lguest at ozlabs.org ---------- Forwarded

Hi: >From some of my test I learn that when a DomU modifies its page table entry (PTE), then a context switch should happen to sync the guest page table (GPT) and shadow page table (SPT). I want to learn this part of codes, so could any one here tell me how I can find these codes? I mean codes aiming at: Updating guest PTE --> DomU/Dom0 context switch-->sync PTs Thanks!

plain text document attachment (xx-paravirt-mm.patch) Memory management for paravirt_ops. Signed-off-by: Steven Rostedt srostedt@redhat.com Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Index: clean-start/arch/x86_64/mm/fault.c =================================================================== --- clean-start.orig/arch/x86_64/mm/fault.c +++

plain text document attachment (xx-paravirt-mm.patch) Memory management for paravirt_ops. Signed-off-by: Steven Rostedt srostedt@redhat.com Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Index: clean-start/arch/x86_64/mm/fault.c =================================================================== --- clean-start.orig/arch/x86_64/mm/fault.c +++

plain text document attachment (hvvm.patch) OK, some explaination is needed here. The goal of lguest with paravirt ops, is to have one kernel that can be loaded both as a host and a guest. To do this, we need to map an area in virtual memory that both the host and guest share. But I don't want any conflicts with the guest. One solution is just to do a single area for boot up, and then use the

plain text document attachment (hvvm.patch) OK, some explaination is needed here. The goal of lguest with paravirt ops, is to have one kernel that can be loaded both as a host and a guest. To do this, we need to map an area in virtual memory that both the host and guest share. But I don't want any conflicts with the guest. One solution is just to do a single area for boot up, and then use the

The __restore_processor_state() fn restores %gs on resume from S3. As such, it cannot be protected by the stack-protector guard since %gs will not be correct on function entry. There are only a few other fns in this file and it should not negatively impact kernel security that they will also have the stack-protector guard removed (and so it's not worth moving them to another file). Without

The __restore_processor_state() fn restores %gs on resume from S3. As such, it cannot be protected by the stack-protector guard since %gs will not be correct on function entry. There are only a few other fns in this file and it should not negatively impact kernel security that they will also have the stack-protector guard removed (and so it's not worth moving them to another file). Without

On Mon, Mar 19, 2018 at 4:29 PM, David Sterba <dsterba at suse.cz> wrote: > On Mon, Mar 19, 2018 at 05:09:28PM +0200, Michael S. Tsirkin wrote: >> Hello! >> The following code triggered by syzbot >> >> r = get_user_pages_fast(log, 1, 1, &page); >> if (r < 0) >> return r; >> BUG_ON(r != 1); >>

On Sat, Apr 21, 2018 at 09:30:05AM +0200, Greg Kroah-Hartman wrote: > On Fri, Apr 20, 2018 at 09:18:01PM +0300, Michael S. Tsirkin wrote: > > an allocated buffer doesn't need to be tied to a vq - > > only vq->vdev is ever used. Pass the function the > > just what it needs - the vdev. > > > > Signed-off-by: Michael S. Tsirkin <mst at redhat.com> >

Stephen Checkoway wrote: > [...] Thanks for the absolutely splendid analysis! > For the memory, immediate form without the suffix, it seems like the options are > 1. If the immediate value is in [0,15], use btsl/btrl since it saves a byte, otherwise error; > 2. Follow both gas's behavior and the Solaris assembler manual Jim Grosbach linked to which stated that unsuffixed

On kvm I have seen some rare hangs in stop_machine when I used more guest cpus than hosts cpus. e.g. 32 guest cpus on 1 host cpu triggered the hang quite often. I could also reproduce the problem on a 4 way z/VM host with a 64 way guest. It turned out that the guest was consuming all available cpus mostly for spinning on scheduler locks like rq->lock. This is expected as the threads are

On kvm I have seen some rare hangs in stop_machine when I used more guest cpus than hosts cpus. e.g. 32 guest cpus on 1 host cpu triggered the hang quite often. I could also reproduce the problem on a 4 way z/VM host with a 64 way guest. It turned out that the guest was consuming all available cpus mostly for spinning on scheduler locks like rq->lock. This is expected as the threads are

Fix the return value of blkdev_name_to_number(). - Function blkdev_name_to_number() should return both devname and devnum, otherwise it may cause "unpack non-sequence" error. Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com> Best Regards, -- Dongxiao _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com

Hi, Keir, This attached patch fixes the issue that guest can not boot if set empty cdrom in configuration file. (For example, disk = [ ''file:/images/a.img'', '',hdc:cdrom,r'' ]) This is because function "uname = config.get(''uname'', '''')" returns '''' but not None if uname is not in config

Move header includes for the nopud / nopmd types to the location of the actual pte / pgd type definitions. This allows generic 4-level page type code to be written before the split 2/3 level page table headers are included. Signed-off-by: Zachary Amsden <zach@vmware.com> diff -r 8233e2c507d3 include/asm-i386/page.h --- a/include/asm-i386/page.h Thu Oct 19 03:11:37 2006 -0700 +++

Move header includes for the nopud / nopmd types to the location of the actual pte / pgd type definitions. This allows generic 4-level page type code to be written before the split 2/3 level page table headers are included. Signed-off-by: Zachary Amsden <zach@vmware.com> diff -r 8233e2c507d3 include/asm-i386/page.h --- a/include/asm-i386/page.h Thu Oct 19 03:11:37 2006 -0700 +++

Commit 9a46ad6d6df3b54 "smp: make smp_call_function_many() use logic similar to smp_call_function_single()" has unified the way to handle single and multiple cross-CPU function calls. Now only one intterupt is needed for architecture specific code to support generic SMP function call interfaces, so kill the redundant single function call interrupt. Cc: Andrew Morton <akpm at