search for: ioport_resourc

From: Jiang Liu <jiang.liu at huawei.com> This patch tries to deprecate usage of pci_scan_bus_parented(). It applies to https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next V2: Kill pci_scan_bus_parented() instead of marking it as deprecated Jiang Liu (3): PCI: export three functions to support modular host bridge driver PCI, xen-pcifront: use new PCI interfaces to

From: Jiang Liu <jiang.liu at huawei.com> This patch tries to deprecate usage of pci_scan_bus_parented(). It applies to https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next V2: Kill pci_scan_bus_parented() instead of marking it as deprecated Jiang Liu (3): PCI: export three functions to support modular host bridge driver PCI, xen-pcifront: use new PCI interfaces to

From: Jiang Liu <jiang.liu at huawei.com> This patch tries to deprecate usage of pci_scan_bus_parented(). It applies to https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next V2: Kill pci_scan_bus_parented() instead of marking it as deprecated Jiang Liu (3): PCI: export three functions to support modular host bridge driver PCI, xen-pcifront: use new PCI interfaces to

...drivers + * from wasting time probing for their hardware. This is a fairly + * brute-force approach to disabling all non-virtual drivers. + * + * Note that this must be called very early to have any effect. + */ +int paravirt_disable_iospace(void) +{ + int ret = 0; + + ret = request_resource(&ioport_resource, &reserve_ioports); + if (ret == 0) + ret = request_resource(&iomem_resource, &reserve_iomem); + + return ret; +} + struct paravirt_ops paravirt_ops = { .name = "bare hardware", diff -r 83c67f9402b5 arch/i386/xen/setup.c --- a/arch/i386/xen/setup.c Tue Jun 05 17:41:04 2...

From: Jiang Liu <jiang.liu at huawei.com> This patch tries to deprecate usage of pci_scan_bus_parented(). It applies to https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next Jiang Liu (3): PCI: export three functions to support modular host bridge driver PCI, xen-pcifront: use new PCI interfaces to simplify implementation PCI: mark pci_scan_bus_parented() as

From: Jiang Liu <jiang.liu at huawei.com> This patch tries to deprecate usage of pci_scan_bus_parented(). It applies to https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next Jiang Liu (3): PCI: export three functions to support modular host bridge driver PCI, xen-pcifront: use new PCI interfaces to simplify implementation PCI: mark pci_scan_bus_parented() as

From: Jiang Liu <jiang.liu at huawei.com> This patch tries to deprecate usage of pci_scan_bus_parented(). It applies to https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next Jiang Liu (3): PCI: export three functions to support modular host bridge driver PCI, xen-pcifront: use new PCI interfaces to simplify implementation PCI: mark pci_scan_bus_parented() as

...if (!bus_entry || !sd) { + sd = kzalloc(sizeof(*sd), GFP_KERNEL); + if (!sd) { err = -ENOMEM; goto err_out; } pcifront_init_sd(sd, domain, bus, pdev); - b = pci_scan_bus_parented(&pdev->xdev->dev, bus, - &pcifront_bus_ops, sd); + pci_add_resource(&resources, &ioport_resource); + pci_add_resource(&resources, &iomem_resource); + pci_add_resource(&resources, &sd->busn_res); + b = pci_create_root_bus(&pdev->xdev->dev, bus, &pcifront_bus_ops, + sd, &resources); if (!b) { dev_err(&pdev->xdev->dev, "Error creati...

...if (!bus_entry || !sd) { + sd = kzalloc(sizeof(*sd), GFP_KERNEL); + if (!sd) { err = -ENOMEM; goto err_out; } pcifront_init_sd(sd, domain, bus, pdev); - b = pci_scan_bus_parented(&pdev->xdev->dev, bus, - &pcifront_bus_ops, sd); + pci_add_resource(&resources, &ioport_resource); + pci_add_resource(&resources, &iomem_resource); + pci_add_resource(&resources, &sd->busn_res); + b = pci_create_root_bus(&pdev->xdev->dev, bus, &pcifront_bus_ops, + sd, &resources); if (!b) { dev_err(&pdev->xdev->dev, "Error creati...

...if (!bus_entry || !sd) { + sd = kzalloc(sizeof(*sd), GFP_KERNEL); + if (!sd) { err = -ENOMEM; goto err_out; } pcifront_init_sd(sd, domain, bus, pdev); - b = pci_scan_bus_parented(&pdev->xdev->dev, bus, - &pcifront_bus_ops, sd); + pci_add_resource(&resources, &ioport_resource); + pci_add_resource(&resources, &iomem_resource); + pci_add_resource(&resources, &sd->busn_res); + b = pci_create_root_bus(&pdev->xdev->dev, bus, &pcifront_bus_ops, + sd, &resources); if (!b) { dev_err(&pdev->xdev->dev, "Error creati...

...event any legacy drivers - * from wasting time probing for their hardware. This is a fairly - * brute-force approach to disabling all non-virtual drivers. - * - * 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

....c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) =================================================================== --- a/arch/i386/kernel/paravirt.c +++ b/arch/i386/kernel/paravirt.c @@ -254,8 +254,11 @@ int paravirt_disable_iospace(void) int ret; ret = request_resource(&ioport_resource, &reserve_ioports); - if (ret == 0) + if (ret == 0) { ret = request_resource(&iomem_resource, &reserve_iomem); + if (ret) + release_resource(&reserve_ioports); + } return ret; }

...return ERR_PTR(ret); - size = ALIGN(size, PA_SECTION_SIZE); - addr = min((unsigned long)iomem_resource.end, - (1UL << MAX_PHYSMEM_BITS) - 1); - addr = addr - size + 1UL; - - /* - * FIXME add a new helper to quickly walk resource tree and find free - * range - * - * FIXME what about ioport_resource resource ? - */ - for (; addr > size && addr >= iomem_resource.start; addr -= size) { - ret = region_intersects(addr, size, 0, IORES_DESC_NONE); - if (ret != REGION_DISJOINT) - continue; - - devmem->resource = devm_request_mem_region(device, addr, size, - dev_name(d...

...return ERR_PTR(ret); - size = ALIGN(size, PA_SECTION_SIZE); - addr = min((unsigned long)iomem_resource.end, - (1UL << MAX_PHYSMEM_BITS) - 1); - addr = addr - size + 1UL; - - /* - * FIXME add a new helper to quickly walk resource tree and find free - * range - * - * FIXME what about ioport_resource resource ? - */ - for (; addr > size && addr >= iomem_resource.start; addr -= size) { - ret = region_intersects(addr, size, 0, IORES_DESC_NONE); - if (ret != REGION_DISJOINT) - continue; - - devmem->resource = devm_request_mem_region(device, addr, size, - dev_name(d...

...PA_SECTION_SIZE); > - addr = min((unsigned long)iomem_resource.end, > - (1UL << MAX_PHYSMEM_BITS) - 1); > - addr = addr - size + 1UL; > - > - /* > - * FIXME add a new helper to quickly walk resource tree and find free > - * range > - * > - * FIXME what about ioport_resource resource ? > - */ > - for (; addr > size && addr >= iomem_resource.start; addr -= size) { > - ret = region_intersects(addr, size, 0, IORES_DESC_NONE); > - if (ret != REGION_DISJOINT) > - continue; > - > - devmem->resource = devm_request_mem_region(device...

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

Hi Dan, Jérôme and Jason, below is a series that cleans up the dev_pagemap interface so that it is more easily usable, which removes the need to wrap it in hmm and thus allowing to kill a lot of code Diffstat: 22 files changed, 245 insertions(+), 802 deletions(-) Git tree: git://git.infradead.org/users/hch/misc.git hmm-devmem-cleanup Gitweb:

Hi Dan, Jérôme and Jason, below is a series that cleans up the dev_pagemap interface so that it is more easily usable, which removes the need to wrap it in hmm and thus allowing to kill a lot of code Note: this series is on top of the rdma/hmm branch + the dev_pagemap releas fix series from Dan that went into 5.2-rc5. Git tree: git://git.infradead.org/users/hch/misc.git

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,