Re: [PATCH] xen: replace xen_remap() with memremap()

2022-05-31 Thread Boris Ostrovsky
an be replaced with memunmap(). Reported-by: kernel test robot Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky

Re: cleanup swiotlb initialization v8

2022-04-05 Thread Boris Ostrovsky
://git.infradead.org/users/hch/misc.git swiotlb-init-cleanup Gitweb: http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/swiotlb-init-cleanup Tested-by: Boris Ostrovsky

Re: [PATCH 12/15] swiotlb: provide swiotlb_init variants that remap the buffer

2022-03-15 Thread Boris Ostrovsky
On 3/15/22 2:36 AM, Christoph Hellwig wrote: @@ -271,12 +273,23 @@ void __init swiotlb_init(bool addressing_limit, unsigned int flags) * allow to pick a location everywhere for hypervisors with guest * memory encryption. */ +retry: + bytes = PAGE_ALIGN(defaul

Re: [PATCH 14/15] swiotlb: remove swiotlb_init_with_tbl and swiotlb_init_late_with_tbl

2022-03-14 Thread Boris Ostrovsky
On 3/14/22 3:31 AM, Christoph Hellwig wrote: @@ -314,6 +293,7 @@ void __init swiotlb_init(bool addressing_limit, unsigned int flags) int swiotlb_init_late(size_t size, gfp_t gfp_mask, int (*remap)(void *tlb, unsigned long nslabs)) { + struct io_tlb_mem *mem = &io_tlb_

Re: [PATCH 13/15] swiotlb: merge swiotlb-xen initialization into swiotlb

2022-03-14 Thread Boris Ostrovsky
On 3/14/22 3:31 AM, Christoph Hellwig wrote: - static void __init pci_xen_swiotlb_init(void) { if (!xen_initial_domain() && !x86_swiotlb_enable) return; x86_swiotlb_enable = true; - xen_swiotlb = true; - xen_swiotlb_init_early(); + swiotlb_i

Re: [PATCH 12/15] swiotlb: provide swiotlb_init variants that remap the buffer

2022-03-14 Thread Boris Ostrovsky
On 3/14/22 3:31 AM, Christoph Hellwig wrote: -void __init swiotlb_init(bool addressing_limit, unsigned int flags) +void __init swiotlb_init_remap(bool addressing_limit, unsigned int flags, + int (*remap)(void *tlb, unsigned long nslabs)) { - size_t bytes = PAGE_ALIGN(defau

Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb

2022-03-09 Thread Boris Ostrovsky
On 3/9/22 1:18 AM, Christoph Hellwig wrote: On Tue, Mar 08, 2022 at 04:38:21PM -0500, Boris Ostrovsky wrote: On 3/1/22 5:53 AM, Christoph Hellwig wrote: Allow to pass a remap argument to the swiotlb initialization functions to handle the Xen/x86 remap case. ARM/ARM64 never did any remapping

Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb

2022-03-08 Thread Boris Ostrovsky
On 3/1/22 5:53 AM, Christoph Hellwig wrote: Allow to pass a remap argument to the swiotlb initialization functions to handle the Xen/x86 remap case. ARM/ARM64 never did any remapping from xen_swiotlb_fixup, so we don't even need that quirk. Any chance this patch could be split? Lots of thin

Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb

2022-03-04 Thread Boris Ostrovsky
On 3/4/22 12:43 PM, Christoph Hellwig wrote: On Fri, Mar 04, 2022 at 12:36:17PM -0500, Boris Ostrovsky wrote: I bisected it to "x86: remove the IOMMU table infrastructure" but haven't actually looked at the code yet. That looks like the swiotlb buffer did not get initialize

Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb

2022-03-04 Thread Boris Ostrovsky
On 3/4/22 12:28 PM, Christoph Hellwig wrote: On Wed, Mar 02, 2022 at 08:15:03AM -0500, Boris Ostrovsky wrote: Not for me, I fail to boot with [ 52.202000] bnxt_en :31:00.0: swiotlb buffer is full (sz: 256 bytes), total 0 (slots), used 0 (slots) (this is iscsi root so I need the NIC

Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb

2022-03-03 Thread Boris Ostrovsky
On 3/3/22 5:57 AM, Christoph Hellwig wrote: On Wed, Mar 02, 2022 at 08:15:03AM -0500, Boris Ostrovsky wrote: Not for me, I fail to boot with [ 52.202000] bnxt_en :31:00.0: swiotlb buffer is full (sz: 256 bytes), total 0 (slots), used 0 (slots) (this is iscsi root so I need the NIC

Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb

2022-03-02 Thread Boris Ostrovsky
On 3/1/22 9:55 PM, Stefano Stabellini wrote: On Tue, 1 Mar 2022, Christoph Hellwig wrote: Allow to pass a remap argument to the swiotlb initialization functions to handle the Xen/x86 remap case. ARM/ARM64 never did any remapping from xen_swiotlb_fixup, so we don't even need that quirk. A

Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb

2022-03-02 Thread Boris Ostrovsky
On 3/2/22 8:15 AM, Boris Ostrovsky wrote: On 3/1/22 9:55 PM, Stefano Stabellini wrote: On Tue, 1 Mar 2022, Christoph Hellwig wrote: Allow to pass a remap argument to the swiotlb initialization functions to handle the Xen/x86 remap case.  ARM/ARM64 never did any remapping from

Re: cleanup swiotlb initialization

2022-02-25 Thread Boris Ostrovsky
On 2/25/22 3:47 AM, Christoph Hellwig wrote: On Thu, Feb 24, 2022 at 12:07:26PM -0500, Boris Ostrovsky wrote: Just to be clear: this crashes only as dom0. Boots fine as baremetal. Ah. I can gues what this might be. On Xen the hypervisor controls the IOMMU and we should never end up

Re: cleanup swiotlb initialization

2022-02-24 Thread Boris Ostrovsky
On 2/24/22 11:39 AM, Christoph Hellwig wrote: On Thu, Feb 24, 2022 at 11:18:33AM -0500, Boris Ostrovsky wrote: On 2/24/22 10:58 AM, Christoph Hellwig wrote: Thanks. This looks really strange as early_amd_iommu_init should not interact much with the changes. I'll see if I can find

Re: cleanup swiotlb initialization

2022-02-24 Thread Boris Ostrovsky
, Feb 23, 2022 at 07:57:49PM -0500, Boris Ostrovsky wrote: [   37.377313] BUG: unable to handle page fault for address: c90042880018 [   37.378219] #PF: supervisor read access in kernel mode [   37.378219] #PF: error_code(0x) - not-present page [   37.378219] PGD 7c2f2ee067 P4D 7c2f2ee06

Re: cleanup swiotlb initialization

2022-02-24 Thread Boris Ostrovsky
On 2/22/22 10:35 AM, Christoph Hellwig wrote: Hi all, this series tries to clean up the swiotlb initialization, including that of swiotlb-xen. To get there is also removes the x86 iommu table infrastructure that massively obsfucates the initialization path. Git tree: git://git.infradea

Re: [PATCH 0/5] xen: cleanup detection of non-essential pv devices

2021-11-25 Thread Boris Ostrovsky
On 11/22/21 3:20 AM, Juergen Gross wrote: On 22.10.21 08:47, Juergen Gross wrote: Today the non-essential pv devices are hard coded in the xenbus driver and this list is lacking multiple entries. This series reworks the detection logic of non-essential devices by adding a flag for that purpos

Re: [PATCH 0/5] xen: cleanup detection of non-essential pv devices

2021-11-23 Thread Boris Ostrovsky
ls-front.c    |  1 +   drivers/xen/xenbus/xenbus_probe_frontend.c | 14 +++---   include/xen/xenbus.h   |  1 +   sound/xen/xen_snd_front.c  |  1 +   8 files changed, 10 insertions(+), 11 deletions(-) Any further comments? Reviewed-by: Boris Ostrovsk

Re: [PATCH v3 7/8] PCI: Replace pci_dev::driver usage by pci_dev::dev.driver

2021-08-11 Thread Boris Ostrovsky
leine-König Xen: Reviewed-by: Boris Ostrovsky

Re: [PATCH v2 5/6] PCI: Adapt all code locations to not use struct pci_dev::driver directly

2021-08-03 Thread Boris Ostrovsky
| 7 ++-- > drivers/usb/host/xhci-pci.c | 3 +- > 21 files changed, 112 insertions(+), 84 deletions(-) For Xen bits: Reviewed-by: Boris Ostrovsky

Re: [PATCH v1 4/5] PCI: Adapt all code locations to not use struct pci_dev::driver directly

2021-08-02 Thread Boris Ostrovsky
On 7/31/21 8:08 AM, Uwe Kleine-König wrote: > Hello Boris, > > On Fri, Jul 30, 2021 at 04:37:31PM -0400, Boris Ostrovsky wrote: >> On 7/29/21 4:37 PM, Uwe Kleine-König wrote: >>> --- a/drivers/pci/xen-pcifront.c >>> +++ b/drivers/pci/xen-pcifront.c

Re: [PATCH v1 4/5] PCI: Adapt all code locations to not use struct pci_dev::driver directly

2021-07-30 Thread Boris Ostrovsky
On 7/29/21 4:37 PM, Uwe Kleine-König wrote: > --- a/drivers/pci/xen-pcifront.c > +++ b/drivers/pci/xen-pcifront.c > @@ -599,12 +599,12 @@ static pci_ers_result_t pcifront_common_process(int cmd, > result = PCI_ERS_RESULT_NONE; > > pcidev = pci_get_domain_bus_and_slot(domain, bus, d

Re: [PATCH v1 13/16] xen: swiotlb: return error code from xen_swiotlb_map_sg()

2021-07-19 Thread Boris Ostrovsky
eturning errors as > DMA_MAPPING_ERROR. So coalesce all errors into EINVAL. Reviewed-by: Boris Ostrovsky

Re: [PATCH RFC v1 5/6] xen-swiotlb: convert variables to arrays

2021-02-19 Thread Boris Ostrovsky
On 2/19/21 3:32 PM, Konrad Rzeszutek Wilk wrote: > On Sun, Feb 07, 2021 at 04:56:01PM +0100, Christoph Hellwig wrote: >> On Thu, Feb 04, 2021 at 09:40:23AM +0100, Christoph Hellwig wrote: >>> So one thing that has been on my mind for a while: I'd really like >>> to kill the separate dma ops in X

Re: [PATCH v1 09/10] mm/memory_hotplug: Don't mark pages PG_reserved when initializing the memmap

2019-11-05 Thread Boris Ostrovsky
On 11/5/19 5:18 AM, David Hildenbrand wrote: > On 04.11.19 23:44, Boris Ostrovsky wrote: >> On 10/24/19 8:09 AM, David Hildenbrand wrote: >>> diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c >>> index 4f2e78a5e4db..af69f057913a 100644 >>> --- a/drivers

Re: [PATCH v1 09/10] mm/memory_hotplug: Don't mark pages PG_reserved when initializing the memmap

2019-11-04 Thread Boris Ostrovsky
On 10/24/19 8:09 AM, David Hildenbrand wrote: > diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c > index 4f2e78a5e4db..af69f057913a 100644 > --- a/drivers/xen/balloon.c > +++ b/drivers/xen/balloon.c > @@ -374,6 +374,13 @@ static void xen_online_page(struct page *page, unsigned > int orde

Re: [PATCH v4 10/13] x86: perf/core: use PERF_PMU_CAP_NO_EXCLUDE for exclude incapable PMUs

2019-01-08 Thread Boris Ostrovsky
On 1/8/19 5:48 AM, Peter Zijlstra wrote: > On Mon, Jan 07, 2019 at 04:27:27PM +, Andrew Murray wrote: >> For drivers that do not support context exclusion let's advertise the >> PERF_PMU_CAP_NOEXCLUDE capability. This ensures that perf will >> prevent us from handling events where any exclusion

Re: [PATCH 3/3] tty: hvc_xen: hide xen_console_remove when unused

2016-01-25 Thread Boris Ostrovsky
On 01/25/2016 04:54 PM, Arnd Bergmann wrote: xencons_disconnect_backend() is only called from xen_console_remove(), and also from xencons_probe()/xencons_resume(). But those two are also under the same ifdef. -boris which is conditionally compiled, so we get a harmless warning when CONFIG_

Re: [Xen-devel] [PATCH v2 4/8] xen: Use the correctly the Xen memory terminologies

2015-08-05 Thread Boris Ostrovsky
On 08/05/2015 08:33 AM, Julien Grall wrote: On 05/08/15 13:19, Boris Ostrovsky wrote: On 08/05/2015 06:51 AM, Julien Grall wrote: diff --git a/drivers/video/fbdev/xen-fbfront.c b/drivers/video/fbdev/xen-fbfront.c index 09dc447..25e3cce 100644 --- a/drivers/video/fbdev/xen-fbfront.c +++ b

Re: [PATCH v2 4/8] xen: Use the correctly the Xen memory terminologies

2015-08-05 Thread Boris Ostrovsky
On 08/05/2015 06:51 AM, Julien Grall wrote: diff --git a/drivers/video/fbdev/xen-fbfront.c b/drivers/video/fbdev/xen-fbfront.c index 09dc447..25e3cce 100644 --- a/drivers/video/fbdev/xen-fbfront.c +++ b/drivers/video/fbdev/xen-fbfront.c @@ -539,7 +539,7 @@ static int xenfb_remove(struct xenbus_

Re: [PATCH v2 4/8] xen: Use the correctly the Xen memory terminologies

2015-08-04 Thread Boris Ostrovsky
On 08/04/2015 02:12 PM, Julien Grall wrote: /* * We detect special mappings in one of two ways: @@ -217,9 +232,13 @@ static inline unsigned long bfn_to_local_pfn(unsigned long mfn) /* VIRT <-> MACHINE conversion */ #define virt_to_machine(v)(phys_to_machine(XPADDR(__pa(v

Re: [PATCH 4/8] xen: Use the correctly the Xen memory terminologies

2015-07-29 Thread Boris Ostrovsky
On 07/29/2015 10:23 AM, Julien Grall wrote: On 29/07/15 15:14, Boris Ostrovsky wrote: static inline unsigned long pfn_to_gfn(unsigned long pfn) { if (xen_feature(XENFEAT_autotranslated_physmap)) return pfn; else return pfn_to_mfn(pfn); } But you'd stil

Re: [PATCH 4/8] xen: Use the correctly the Xen memory terminologies

2015-07-29 Thread Boris Ostrovsky
On 07/29/2015 07:25 AM, Julien Grall wrote: Hi Boris, On 28/07/15 20:12, Boris Ostrovsky wrote: On 07/28/2015 11:02 AM, Julien Grall wrote: Based on include/xen/mm.h [1], Linux is mistakenly using MFN when GFN is meant, I suspect this is because the first support for Xen was for PV. This

Re: [PATCH 4/8] xen: Use the correctly the Xen memory terminologies

2015-07-28 Thread Boris Ostrovsky
On 07/28/2015 11:02 AM, Julien Grall wrote: Based on include/xen/mm.h [1], Linux is mistakenly using MFN when GFN is meant, I suspect this is because the first support for Xen was for PV. This brough some misimplementation of helpers on ARM and make the developper confused the expected behavior.