search for: highmems

Add an highmem parameter to alloc_xenballooned_pages, to allow callers to request lowmem or highmem pages. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> --- drivers/xen/balloon.c | 12 ++++++++---- drivers/xen/gntdev.c | 2 +- include/xen/balloon.h | 3 ++- 3 files changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/xen/balloon.c

Now that the kmap atomic index is stored in task struct provide a preemptible variant. On context switch the maps of an outgoing task are removed and the map of the incoming task are restored. That's obviously slow, but highmem is slow anyway. The kmap_local.*() functions can be invoked from both preemptible and atomic context. kmap local sections disable migration to keep the resulting

Some virtio device drivers (9p) need to translate high virtual addresses to physical addresses, which are inserted into the virtqueue for processing by userspace. This patch exports the kmap_to_page symbol, so that the affected drivers can be compiled as modules. Signed-off-by: Will Deacon <will.deacon at arm.com> --- mm/highmem.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)

Some virtio device drivers (9p) need to translate high virtual addresses to physical addresses, which are inserted into the virtqueue for processing by userspace. This patch exports the kmap_to_page symbol, so that the affected drivers can be compiled as modules. Signed-off-by: Will Deacon <will.deacon at arm.com> --- mm/highmem.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)

The mapping code is odd and looks broken. See FIXME in the comment. Also fix the harmless off by one in the FIX_KMAP_END define. Signed-off-by: Thomas Gleixner <tglx at linutronix.de> Cc: Nick Hu <nickhu at andestech.com> Cc: Greentime Hu <green.hu at gmail.com> Cc: Vincent Chen <deanbo422 at gmail.com> --- V3: Remove the kmap types cruft --- arch/nds32/Kconfig.cpu

All users gone. Signed-off-by: Thomas Gleixner <tglx at linutronix.de> --- include/linux/highmem.h | 63 +++--------------------------------------------- mm/highmem.c | 7 ----- 2 files changed, 5 insertions(+), 65 deletions(-) --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -86,31 +86,16 @@ static inline void kunmap(struct page *p * be used in IRQ

No reason having the same code in every architecture. Signed-off-by: Thomas Gleixner <tglx at linutronix.de> Cc: Russell King <linux at armlinux.org.uk> Cc: Arnd Bergmann <arnd at arndb.de> Cc: linux-arm-kernel at lists.infradead.org --- V3: Remove the kmap types cruft --- arch/arm/Kconfig | 1 arch/arm/include/asm/fixmap.h | 4 -

Assumes hypervisor interface headers have been sync-ed after the hypervisor side patch was applied. As usual, written and tested on 2.6.27.3 and made apply to the 2.6.18 tree without further testing. Signed-off-by: Jan Beulich <jbeulich@novell.com> Index: head-2008-10-24/arch/i386/mm/highmem-xen.c =================================================================== ---

No reason having the same code in every architecture Signed-off-by: Thomas Gleixner <tglx at linutronix.de> Cc: Michael Ellerman <mpe at ellerman.id.au> Cc: Benjamin Herrenschmidt <benh at kernel.crashing.org> Cc: Paul Mackerras <paulus at samba.org> Cc: linuxppc-dev at lists.ozlabs.org --- V3: Remove the kmap types cruft --- arch/powerpc/Kconfig | 1

Following up to the discussion in: https://lore.kernel.org/r/20200914204209.256266093 at linutronix.de and the second version of this: https://lore.kernel.org/r/20201029221806.189523375 at linutronix.de this series provides a preemptible variant of kmap_atomic & related interfaces. This is achieved by: - Removing the RT dependency from migrate_disable/enable() - Consolidating all

Following up to the discussion in: https://lore.kernel.org/r/20200914204209.256266093 at linutronix.de and the second version of this: https://lore.kernel.org/r/20201029221806.189523375 at linutronix.de this series provides a preemptible variant of kmap_atomic & related interfaces. This is achieved by: - Removing the RT dependency from migrate_disable/enable() - Consolidating all

Following up to the discussion in: https://lore.kernel.org/r/20200914204209.256266093 at linutronix.de and the second version of this: https://lore.kernel.org/r/20201029221806.189523375 at linutronix.de this series provides a preemptible variant of kmap_atomic & related interfaces. This is achieved by: - Removing the RT dependency from migrate_disable/enable() - Consolidating all

Hi guys, Another strange behavior with some test servers. They are booted using 2.6.11.12, xen-2.0.6, Debian. The only daemons running on dom0 are : xend, smtp, quagga (ospf), portmap (nfs client), sshd. Memory usage at startup is aroung 30 MB. Dom0 reserved memory is 256 MB. The only things that happen on this server are domU''s start/stop (xm create, xm shutdown) and a

Hi, i''ve a big problem in a xenU (256M RAM, 2.6.11.12-xenU, in 3 LVM partition (/, swap and /home) This xenU freeze and crash with this messages in syslog. This xenU work very fine since 2005 september. Is it serious ? What could be the solution ? Regards Franck ############ SYSLOG ...................... Jun 18 08:45:21 lemodev kernel: oom-killer: gfp_mask=0x1d2 Jun 18 08:45:21

Hi, One of my servers has had its dom0 "oops" over and over twice in the last week. Unfortunately this is newly deployed so I have no idea if it is down to Xen or not. xen_changeset : Mon Dec 12 18:47:47 2005 +0100 8270:4ad23e798798 dom0 kernel is a vanilla 2.6.12 with Ralph''s .6+xen kernel patch applied. x86_32 sarge packages were used. The .config is

On Tue, Nov 3, 2020 at 2:33 AM Thomas Gleixner <tglx at linutronix.de> wrote: > > +static inline void *kmap(struct page *page) > +{ > + void *addr; > + > + might_sleep(); > + if (!PageHighMem(page)) > + addr = page_address(page); > + else > + addr = kmap_high(page); > + kmap_flush_tlb((unsigned

Adopt the map ordering to match the other architectures and the generic code. Also make the maximum entries limited and not dependend on the number of CPUs. With the original implementation did the following calculation: nr_slots = mapsize >> PAGE_SHIFT; The results in either 512 or 1024 total slots depending on configuration. The total slots have to be divided by the number of CPUs to

No reason having the same code in every architecture Signed-off-by: Thomas Gleixner <tglx at linutronix.de> Cc: Thomas Bogendoerfer <tsbogend at alpha.franken.de> Cc: linux-mips at vger.kernel.org --- V3: Remove the kmap types cruft --- arch/mips/Kconfig | 1 arch/mips/include/asm/fixmap.h | 4 - arch/mips/include/asm/highmem.h | 6 +-

Move the gory details of kmap & al into a private header and only document the interfaces which are usable by drivers. Signed-off-by: Thomas Gleixner <tglx at linutronix.de> --- V3: New patch --- include/linux/highmem-internal.h | 174 +++++++++++++++++++++++++ include/linux/highmem.h | 270 ++++++++++++++------------------------- mm/highmem.c | 11 - 3

Hi all, Just watching for my first time the 'oom-killer' call in a CentOS 4.2 workstation. System was running normally but with high load of nice process, iow, rosetta and seti, others appart, nautilus, etc... i realized that after a night of standby running normally, the next moorning after few manual operations from X-session in local console, it started a massive swapping, this time