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Hi, I installed Syslinux 6.03 on Windows 2008 R2 for PXE Boot. Legacy Boot works fine. In UEFI PXE boot ( files taken from /efi64, syslinux.efi renamed to bootmgfw.efi ) the System boots up into menu correctly. In "default" I configured to either boot efishell.64 or bootx64.efi (Windows PE). But I get following error if I select on to boot: Invalid boot signature 0x00,

We set dirty bit through setting up kmaps and access them through kernel virtual address, this may result alias in virtually tagged caches that require a dcache flush afterwards. Cc: Christoph Hellwig <hch at infradead.org> Cc: James Bottomley <James.Bottomley at HansenPartnership.com> Cc: Andrea Arcangeli <aarcange at redhat.com> Fixes: 3a4d5c94e9593 ("vhost_net: a kernel-level virtio server") Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/vhost/vhost.c b/driv...

We set dirty bit through setting up kmaps and access them through kernel virtual address, this may result alias in virtually tagged caches that require a dcache flush afterwards. Cc: Christoph Hellwig <hch at infradead.org> Cc: James Bottomley <James.Bottomley at HansenPartnership.com> Cc: Andrea Arcangeli <aarcange at redhat.com> Fixes: 3a4d5c94e9593 ("vhost_net: a kernel-level virtio server") Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/vhost/vhost.c b/driv...

...e the support. For those cases, a simplified get_user()/put_user() pair protected by a global mutex is provided as a fallback. The fallback may lead false positive that userspace may see more dirty pages. Cc: Christoph Hellwig <hch at infradead.org> Cc: James Bottomley <James.Bottomley at HansenPartnership.com> Cc: Andrea Arcangeli <aarcange at redhat.com> Cc: Thomas Gleixner <tglx at linutronix.de> Cc: Ingo Molnar <mingo at redhat.com> Cc: Peter Zijlstra <peterz at infradead.org> Cc: Darren Hart <dvhart at infradead.org> Fixes: 3a4d5c94e9593 ("vhost_net: a kerne...

...e the support. For those cases, a simplified get_user()/put_user() pair protected by a global mutex is provided as a fallback. The fallback may lead false positive that userspace may see more dirty pages. Cc: Christoph Hellwig <hch at infradead.org> Cc: James Bottomley <James.Bottomley at HansenPartnership.com> Cc: Andrea Arcangeli <aarcange at redhat.com> Cc: Thomas Gleixner <tglx at linutronix.de> Cc: Ingo Molnar <mingo at redhat.com> Cc: Peter Zijlstra <peterz at infradead.org> Cc: Darren Hart <dvhart at infradead.org> Fixes: 3a4d5c94e9593 ("vhost_net: a kerne...

...d archs implement a kmap fallback on top or simply disable LOG_ALL features of vhost. - The helper also requires userspace pointer is located at 4-byte boundary, need to check during dirty log setting Cc: Christoph Hellwig <hch at infradead.org> Cc: James Bottomley <James.Bottomley at HansenPartnership.com> Cc: Andrea Arcangeli <aarcange at redhat.com> Cc: Thomas Gleixner <tglx at linutronix.de> Cc: Ingo Molnar <mingo at redhat.com> Cc: Peter Zijlstra <peterz at infradead.org> Cc: Darren Hart <dvhart at infradead.org> Fixes: 3a4d5c94e9593 ("vhost_net: a kerne...

...d archs implement a kmap fallback on top or simply disable LOG_ALL features of vhost. - The helper also requires userspace pointer is located at 4-byte boundary, need to check during dirty log setting Cc: Christoph Hellwig <hch at infradead.org> Cc: James Bottomley <James.Bottomley at HansenPartnership.com> Cc: Andrea Arcangeli <aarcange at redhat.com> Cc: Thomas Gleixner <tglx at linutronix.de> Cc: Ingo Molnar <mingo at redhat.com> Cc: Peter Zijlstra <peterz at infradead.org> Cc: Darren Hart <dvhart at infradead.org> Fixes: 3a4d5c94e9593 ("vhost_net: a kerne...

...hrough put_user(). Note: there're archs (few non popular ones) that don't implement futex helper, we can't log dirty pages. We can fix them on top or simply disable LOG_ALL features of vhost. Cc: Christoph Hellwig <hch at infradead.org> Cc: James Bottomley <James.Bottomley at HansenPartnership.com> Cc: Andrea Arcangeli <aarcange at redhat.com> Fixes: 3a4d5c94e9593 ("vhost_net: a kernel-level virtio server") Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 27 +++++++++++++++------------ 1 file changed, 15 insertions(+), 12 deletions...

...hrough put_user(). Note: there're archs (few non popular ones) that don't implement futex helper, we can't log dirty pages. We can fix them on top or simply disable LOG_ALL features of vhost. Cc: Christoph Hellwig <hch at infradead.org> Cc: James Bottomley <James.Bottomley at HansenPartnership.com> Cc: Andrea Arcangeli <aarcange at redhat.com> Fixes: 3a4d5c94e9593 ("vhost_net: a kernel-level virtio server") Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 27 +++++++++++++++------------ 1 file changed, 15 insertions(+), 12 deletions...

...hardware tokens, was designed for storing things (keys) internally. And you can load keys onto PKCS#11 tokens (if you configure them so ? that?s a policy issue rather than a technological limitation). -- Regards, Uri Blumenthal On 11/3/17, 12:33, "James Bottomley" <James.Bottomley at HansenPartnership.com> wrote: On Fri, 2017-11-03 at 14:34 +0000, Blumenthal, Uri - 0553 - MITLL wrote: > >> Let me rephrase my question: what does using OpenSSL > engines enable > >> that we can't already do via PKCS#11? > >...

...running for such testing, including a > 715/64 and two 730. > I'm going to test this git tree on the 715/64: > git://git.infradead.org/users/hch/misc.git dma_alloc_pages This tree boots nicely (up to a command prompt with i82596 nic working): 53c700: Version 2.8 By James.Bottomley at HansenPartnership.com scsi0: 53c710 rev 2 scsi host0: LASI SCSI 53c700 scsi 0:0:6:0: Direct-Access QUANTUM FIREBALL_TM3200S 300X PQ: 0 ANSI: 2 scsi target0:0:6: Beginning Domain Validation scsi 0:0:6:0: tag#56 Enabling Tag Command Queuing scsi target0:0:6: asynchronous scsi target0:0:6: FAST-10 SCSI 10.0 MB/s S...

...aking a hostdata structure then the descriptive argument name needs to change ... it can't be dev anymore. I'm happy with it simply becoming 'h' if hostdata is too long. I already asked for this on the first go around: https://lore.kernel.org/alsa-devel/1598971960.4238.5.camel at HansenPartnership.com/ James

...We set dirty bit through setting up kmaps and access them through > kernel virtual address, this may result alias in virtually tagged > caches that require a dcache flush afterwards. > > Cc: Christoph Hellwig <hch at infradead.org> > Cc: James Bottomley <James.Bottomley at HansenPartnership.com> > Cc: Andrea Arcangeli <aarcange at redhat.com> > Fixes: 3a4d5c94e9593 ("vhost_net: a kernel-level virtio server") This is like saying "everyone with vhost needs this". In practice only might affect some architectures. Which ones? You want to Cc the relevant...

..., a > simplified get_user()/put_user() pair protected by a global mutex is > provided as a fallback. The fallback may lead false positive that > userspace may see more dirty pages. > > Cc: Christoph Hellwig <hch at infradead.org> > Cc: James Bottomley <James.Bottomley at HansenPartnership.com> > Cc: Andrea Arcangeli <aarcange at redhat.com> > Cc: Thomas Gleixner <tglx at linutronix.de> > Cc: Ingo Molnar <mingo at redhat.com> > Cc: Peter Zijlstra <peterz at infradead.org> > Cc: Darren Hart <dvhart at infradead.org> > Fixes: 3a4d5c94e...

...39;t log dirty pages. We can fix them on top or > simply disable LOG_ALL features of vhost. Or implement futex_atomic_cmpxchg using kmap if they don't have virtually tagged caches. > > Cc: Christoph Hellwig <hch at infradead.org> > Cc: James Bottomley <James.Bottomley at HansenPartnership.com> > Cc: Andrea Arcangeli <aarcange at redhat.com> > Fixes: 3a4d5c94e9593 ("vhost_net: a kernel-level virtio server") > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/vhost/vhost.c | 27 +++++++++++++++------------ > 1 file changed,...

..., a > simplified get_user()/put_user() pair protected by a global mutex is > provided as a fallback. The fallback may lead false positive that > userspace may see more dirty pages. > > Cc: Christoph Hellwig <hch at infradead.org> > Cc: James Bottomley <James.Bottomley at HansenPartnership.com> > Cc: Andrea Arcangeli <aarcange at redhat.com> > Cc: Thomas Gleixner <tglx at linutronix.de> > Cc: Ingo Molnar <mingo at redhat.com> > Cc: Peter Zijlstra <peterz at infradead.org> > Cc: Darren Hart <dvhart at infradead.org> > Fixes: 3a4d5c94e...

On 01.09.20 17:22, James Bottomley wrote: > On Tue, 2020-09-01 at 16:05 +0100, Matthew Wilcox wrote: >> On Tue, Sep 01, 2020 at 07:52:40AM -0700, James Bottomley wrote: >>> I think this looks mostly OK, except for one misnamed parameter >>> below. Unfortunately, the last non-coherent parisc was the 700 >>> series and I no longer own a box, so I can't test

...gt; disable LOG_ALL features of vhost. > - The helper also requires userspace pointer is located at 4-byte > boundary, need to check during dirty log setting Why check? Round it down. > Cc: Christoph Hellwig <hch at infradead.org> > Cc: James Bottomley <James.Bottomley at HansenPartnership.com> > Cc: Andrea Arcangeli <aarcange at redhat.com> > Cc: Thomas Gleixner <tglx at linutronix.de> > Cc: Ingo Molnar <mingo at redhat.com> > Cc: Peter Zijlstra <peterz at infradead.org> > Cc: Darren Hart <dvhart at infradead.org> > Fixes: 3a4d5c94e...

[+cc Jingoo] On Fri, Jul 18, 2014 at 12:50 PM, James Bottomley <James.Bottomley at hansenpartnership.com> wrote: > On Fri, 2014-07-18 at 11:17 -0700, Greg KH wrote: >> On Fri, Jul 18, 2014 at 09:54:32AM -0700, James Bottomley wrote: >> > On Fri, 2014-07-18 at 09:43 -0700, Greg KH wrote: >> > > On Fri, Jul 18, 2014 at 12:22:13PM -0400, John W. Linville wrote: >&g...

...atch I posted the other day. It will have a minor context conflict without that patch, but is otherwise standalone. ] Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> --- arch/i386/kernel/smp.c | 21 +++++++++++++---- arch/i386/kernel/smpboot.c | 8 +++--- include/asm-i386/smp.h | 53 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 73 insertions(+), 9 deletions(-) ===========================================================...