November 2021 - Linux-stable-mirror

[PATCH] remoteproc: qcom: pas: Add missing power-domain "mxc" for CDSP

by Sibi Sankar

Add missing power-domain "mxc" required by CDSP PAS remoteproc on SM8350 SoC. Fixes: e8b4e9a21af7 ("remoteproc: qcom: pas: Add SM8350 PAS remoteprocs") Signed-off-by: Sibi Sankar <sibis(a)codeaurora.org> Cc: stable(a)vger.kernel.org --- The device tree and pas documentation lists mcx as a required pd for cdsp. Looks like it was missed while adding the proxy pds in the pas driver. Bjorn/Vinod you'll need to test this patch before picking it up. drivers/remoteproc/qcom_q6v5_pas.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c index b921fc26cd04..ad20065dbdea 100644 --- a/drivers/remoteproc/qcom_q6v5_pas.c +++ b/drivers/remoteproc/qcom_q6v5_pas.c @@ -661,6 +661,7 @@ static const struct adsp_data sm8350_cdsp_resource = { }, .proxy_pd_names = (char*[]){ "cx", + "mxc", NULL }, .ssr_name = "cdsp", -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project

2 years, 11 months

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Re: [PATCH v5 1/2] x86/PCI: Ignore E820 reservations for bridge windows on newer systems

by Bjorn Helgaas

On Wed, Oct 20, 2021 at 12:23:26PM +0200, Hans de Goede wrote: > On 10/19/21 23:52, Bjorn Helgaas wrote: > > On Thu, Oct 14, 2021 at 08:39:42PM +0200, Hans de Goede wrote: > >> Some BIOS-es contain a bug where they add addresses which map to system > >> RAM in the PCI host bridge window returned by the ACPI _CRS method, see > >> commit 4dc2287c1805 ("x86: avoid E820 regions when allocating address > >> space"). > >> > >> To work around this bug Linux excludes E820 reserved addresses when > >> allocating addresses from the PCI host bridge window since 2010. > >> ... > > I haven't seen anybody else eager to merge this, so I guess I'll stick > > my neck out here. > > > > I applied this to my for-linus branch for v5.15. > > Thank you, and sorry about the build-errors which the lkp > kernel-test-robot found. > > I've just send out a patch which fixes these build-errors > (verified with both .config-s from the lkp reports). > Feel free to squash this into the original patch (or keep > them separate, whatever works for you). Thanks, I squashed the fix in. HOWEVER, I think it would be fairly risky to push this into v5.15. We would be relying on the assumption that current machines have all fixed the BIOS defect that 4dc2287c1805 addressed, and we have little evidence for that. I'm not sure there's significant benefit to having this in v5.15. Yes, the mainline v5.15 kernel would work on the affected machines, but I suspect most people with those machines are running distro kernels, not mainline kernels. This issue has been around a long time, so it's not like a regression that we just introduced. If we fixed these machines and regressed *other* machines, we'd be worse off than we are now. Convince me otherwise if you see this differently :) In the meantime, here's another possibility for working around this. What if we discarded remove_e820_regions() completely, but aligned the problem _CRS windows a little more? The 4dc2287c1805 case was this: BIOS-e820: 00000000bfe4dc00 - 00000000c0000000 (reserved) pci_root PNP0A03:00: host bridge window [mem 0xbff00000-0xdfffffff] where the _CRS window was of size 0x20100000, i.e., 512M + 1M. At least in this particular case, we could avoid the problem by throwing away that first 1M and aligning the window to a nice 3G boundary. Maybe it would be worth giving up a small fraction (less than 0.2% in this case) of questionable windows like this? Bjorn

2 years, 11 months

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FAILED: patch "[PATCH] staging: most: dim2: use device release method" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From d445aa402d60014a37a199fae2bba379696b007d Mon Sep 17 00:00:00 2001 From: Nikita Yushchenko <nikita.yoush(a)cogentembedded.com> Date: Tue, 5 Oct 2021 17:34:50 +0300 Subject: [PATCH] staging: most: dim2: use device release method Commit 723de0f9171e ("staging: most: remove device from interface structure") moved registration of driver-provided struct device to the most subsystem. This updated dim2 driver as well. However, struct device passed to register_device() becomes refcounted, and must not be explicitly deallocated, but must provide release method instead. Which is incompatible with managing it via devres. This patch makes the device structure allocated without devres, adds device release method, and moves device destruction there. Fixes: 723de0f9171e ("staging: most: remove device from interface structure") Signed-off-by: Nikita Yushchenko <nikita.yoush(a)cogentembedded.com> Link: https://lore.kernel.org/r/20211005143448.8660-2-nikita.yoush@cogentembedded… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/staging/most/dim2/dim2.c b/drivers/staging/most/dim2/dim2.c index 96cb5280a385..bd102329d8c8 100644 --- a/drivers/staging/most/dim2/dim2.c +++ b/drivers/staging/most/dim2/dim2.c @@ -727,6 +727,23 @@ static int get_dim2_clk_speed(const char *clock_speed, u8 *val) return -EINVAL; } +static void dim2_release(struct device *d) +{ + struct dim2_hdm *dev = container_of(d, struct dim2_hdm, dev); + unsigned long flags; + + kthread_stop(dev->netinfo_task); + + spin_lock_irqsave(&dim_lock, flags); + dim_shutdown(); + spin_unlock_irqrestore(&dim_lock, flags); + + if (dev->disable_platform) + dev->disable_platform(to_platform_device(d->parent)); + + kfree(dev); +} + /* * dim2_probe - dim2 probe handler * @pdev: platform device structure @@ -748,7 +765,7 @@ static int dim2_probe(struct platform_device *pdev) enum { MLB_INT_IDX, AHB0_INT_IDX }; - dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); + dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; @@ -760,19 +777,21 @@ static int dim2_probe(struct platform_device *pdev) "microchip,clock-speed", &clock_speed); if (ret) { dev_err(&pdev->dev, "missing dt property clock-speed\n"); - return ret; + goto err_free_dev; } ret = get_dim2_clk_speed(clock_speed, &dev->clk_speed); if (ret) { dev_err(&pdev->dev, "bad dt property clock-speed\n"); - return ret; + goto err_free_dev; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); dev->io_base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(dev->io_base)) - return PTR_ERR(dev->io_base); + if (IS_ERR(dev->io_base)) { + ret = PTR_ERR(dev->io_base); + goto err_free_dev; + } of_id = of_match_node(dim2_of_match, pdev->dev.of_node); pdata = of_id->data; @@ -780,7 +799,7 @@ static int dim2_probe(struct platform_device *pdev) if (pdata->enable) { ret = pdata->enable(pdev); if (ret) - return ret; + goto err_free_dev; } dev->disable_platform = pdata->disable; if (pdata->fcnt) @@ -875,24 +894,19 @@ static int dim2_probe(struct platform_device *pdev) dev->most_iface.request_netinfo = request_netinfo; dev->most_iface.driver_dev = &pdev->dev; dev->most_iface.dev = &dev->dev; - dev->dev.init_name = "dim2_state"; + dev->dev.init_name = dev->name; dev->dev.parent = &pdev->dev; + dev->dev.release = dim2_release; - ret = most_register_interface(&dev->most_iface); - if (ret) { - dev_err(&pdev->dev, "failed to register MOST interface\n"); - goto err_stop_thread; - } - - return 0; + return most_register_interface(&dev->most_iface); -err_stop_thread: - kthread_stop(dev->netinfo_task); err_shutdown_dim: dim_shutdown(); err_disable_platform: if (dev->disable_platform) dev->disable_platform(pdev); +err_free_dev: + kfree(dev); return ret; } @@ -906,17 +920,8 @@ static int dim2_probe(struct platform_device *pdev) static int dim2_remove(struct platform_device *pdev) { struct dim2_hdm *dev = platform_get_drvdata(pdev); - unsigned long flags; most_deregister_interface(&dev->most_iface); - kthread_stop(dev->netinfo_task); - - spin_lock_irqsave(&dim_lock, flags); - dim_shutdown(); - spin_unlock_irqrestore(&dim_lock, flags); - - if (dev->disable_platform) - dev->disable_platform(pdev); return 0; }

2 years, 11 months

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+ mm-fix-panic-in-__alloc_pages.patch added to -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: mm: fix panic in __alloc_pages has been added to the -mm tree. Its filename is mm-fix-panic-in-__alloc_pages.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/mm-fix-panic-in-__alloc_pages.pat… and later at https://ozlabs.org/~akpm/mmotm/broken-out/mm-fix-panic-in-__alloc_pages.pat… Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Alexey Makhalov <amakhalov(a)vmware.com> Subject: mm: fix panic in __alloc_pages There is a kernel panic caused by pcpu_alloc_pages() passing offlined and uninitialized node to alloc_pages_node() leading to panic by NULL dereferencing uninitialized NODE_DATA(nid). CPU2 has been hot-added BUG: unable to handle page fault for address: 0000000000001608 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] SMP PTI CPU: 0 PID: 1 Comm: systemd Tainted: G E 5.15.0-rc7+ #11 Hardware name: VMware, Inc. VMware7,1/440BX Desktop Reference Platform, BIOS VMW RIP: 0010:__alloc_pages+0x127/0x290 Code: 4c 89 f0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 44 89 e0 48 8b 55 b8 c1 e8 0c 83 e0 01 88 45 d0 4c 89 c8 48 85 d2 0f 85 1a 01 00 00 <45> 3b 41 08 0f 82 10 01 00 00 48 89 45 c0 48 8b 00 44 89 e2 81 e2 RSP: 0018:ffffc900006f3bc8 EFLAGS: 00010246 RAX: 0000000000001600 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000cc2 RBP: ffffc900006f3c18 R08: 0000000000000001 R09: 0000000000001600 R10: ffffc900006f3a40 R11: ffff88813c9fffe8 R12: 0000000000000cc2 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000cc2 FS: 00007f27ead70500(0000) GS:ffff88807ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000001608 CR3: 000000000582c003 CR4: 00000000001706b0 Call Trace: pcpu_alloc_pages.constprop.0+0xe4/0x1c0 pcpu_populate_chunk+0x33/0xb0 pcpu_alloc+0x4d3/0x6f0 __alloc_percpu_gfp+0xd/0x10 alloc_mem_cgroup_per_node_info+0x54/0xb0 mem_cgroup_alloc+0xed/0x2f0 mem_cgroup_css_alloc+0x33/0x2f0 css_create+0x3a/0x1f0 cgroup_apply_control_enable+0x12b/0x150 cgroup_mkdir+0xdd/0x110 kernfs_iop_mkdir+0x4f/0x80 vfs_mkdir+0x178/0x230 do_mkdirat+0xfd/0x120 __x64_sys_mkdir+0x47/0x70 ? syscall_exit_to_user_mode+0x21/0x50 do_syscall_64+0x43/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae Panic can be easily reproduced by disabling udev rule for automatic onlining hot added CPU followed by CPU with memoryless node (NUMA node with CPU only) hot add. Hot adding CPU and memoryless node does not bring the node to online state. Memoryless node will be onlined only during the onlining its CPU. Node can be in one of the following states: 1. not present.(nid == NUMA_NO_NODE) 2. present, but offline (nid > NUMA_NO_NODE, node_online(nid) == 0, NODE_DATA(nid) == NULL) 3. present and online (nid > NUMA_NO_NODE, node_online(nid) > 0, NODE_DATA(nid) != NULL) Percpu code is doing allocations for all possible CPUs. The issue happens when it serves hot added but not yet onlined CPU when its node is in 2nd state. This node is not ready to use, fallback to numa_mem_id(). Link: https://lkml.kernel.org/r/20211108202325.20304-1-amakhalov@vmware.com Signed-off-by: Alexey Makhalov <amakhalov(a)vmware.com> Reviewed-by: David Hildenbrand <david(a)redhat.com> Cc: David Hildenbrand <david(a)redhat.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Oscar Salvador <osalvador(a)suse.de> Cc: Dennis Zhou <dennis(a)kernel.org> Cc: Tejun Heo <tj(a)kernel.org> Cc: Christoph Lameter <cl(a)linux.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/percpu-vm.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) --- a/mm/percpu-vm.c~mm-fix-panic-in-__alloc_pages +++ a/mm/percpu-vm.c @@ -84,15 +84,19 @@ static int pcpu_alloc_pages(struct pcpu_ gfp_t gfp) { unsigned int cpu, tcpu; - int i; + int i, nid; gfp |= __GFP_HIGHMEM; for_each_possible_cpu(cpu) { + nid = cpu_to_node(cpu); + if (nid == NUMA_NO_NODE || !node_online(nid)) + nid = numa_mem_id(); + for (i = page_start; i < page_end; i++) { struct page **pagep = &pages[pcpu_page_idx(cpu, i)]; - *pagep = alloc_pages_node(cpu_to_node(cpu), gfp, 0); + *pagep = alloc_pages_node(nid, gfp, 0); if (!*pagep) goto err; } _ Patches currently in -mm which might be from amakhalov(a)vmware.com are mm-fix-panic-in-__alloc_pages.patch

2 years, 11 months

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FAILED: patch "[PATCH] staging: most: dim2: use device release method" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From d445aa402d60014a37a199fae2bba379696b007d Mon Sep 17 00:00:00 2001 From: Nikita Yushchenko <nikita.yoush(a)cogentembedded.com> Date: Tue, 5 Oct 2021 17:34:50 +0300 Subject: [PATCH] staging: most: dim2: use device release method Commit 723de0f9171e ("staging: most: remove device from interface structure") moved registration of driver-provided struct device to the most subsystem. This updated dim2 driver as well. However, struct device passed to register_device() becomes refcounted, and must not be explicitly deallocated, but must provide release method instead. Which is incompatible with managing it via devres. This patch makes the device structure allocated without devres, adds device release method, and moves device destruction there. Fixes: 723de0f9171e ("staging: most: remove device from interface structure") Signed-off-by: Nikita Yushchenko <nikita.yoush(a)cogentembedded.com> Link: https://lore.kernel.org/r/20211005143448.8660-2-nikita.yoush@cogentembedded… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/staging/most/dim2/dim2.c b/drivers/staging/most/dim2/dim2.c index 96cb5280a385..bd102329d8c8 100644 --- a/drivers/staging/most/dim2/dim2.c +++ b/drivers/staging/most/dim2/dim2.c @@ -727,6 +727,23 @@ static int get_dim2_clk_speed(const char *clock_speed, u8 *val) return -EINVAL; } +static void dim2_release(struct device *d) +{ + struct dim2_hdm *dev = container_of(d, struct dim2_hdm, dev); + unsigned long flags; + + kthread_stop(dev->netinfo_task); + + spin_lock_irqsave(&dim_lock, flags); + dim_shutdown(); + spin_unlock_irqrestore(&dim_lock, flags); + + if (dev->disable_platform) + dev->disable_platform(to_platform_device(d->parent)); + + kfree(dev); +} + /* * dim2_probe - dim2 probe handler * @pdev: platform device structure @@ -748,7 +765,7 @@ static int dim2_probe(struct platform_device *pdev) enum { MLB_INT_IDX, AHB0_INT_IDX }; - dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); + dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; @@ -760,19 +777,21 @@ static int dim2_probe(struct platform_device *pdev) "microchip,clock-speed", &clock_speed); if (ret) { dev_err(&pdev->dev, "missing dt property clock-speed\n"); - return ret; + goto err_free_dev; } ret = get_dim2_clk_speed(clock_speed, &dev->clk_speed); if (ret) { dev_err(&pdev->dev, "bad dt property clock-speed\n"); - return ret; + goto err_free_dev; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); dev->io_base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(dev->io_base)) - return PTR_ERR(dev->io_base); + if (IS_ERR(dev->io_base)) { + ret = PTR_ERR(dev->io_base); + goto err_free_dev; + } of_id = of_match_node(dim2_of_match, pdev->dev.of_node); pdata = of_id->data; @@ -780,7 +799,7 @@ static int dim2_probe(struct platform_device *pdev) if (pdata->enable) { ret = pdata->enable(pdev); if (ret) - return ret; + goto err_free_dev; } dev->disable_platform = pdata->disable; if (pdata->fcnt) @@ -875,24 +894,19 @@ static int dim2_probe(struct platform_device *pdev) dev->most_iface.request_netinfo = request_netinfo; dev->most_iface.driver_dev = &pdev->dev; dev->most_iface.dev = &dev->dev; - dev->dev.init_name = "dim2_state"; + dev->dev.init_name = dev->name; dev->dev.parent = &pdev->dev; + dev->dev.release = dim2_release; - ret = most_register_interface(&dev->most_iface); - if (ret) { - dev_err(&pdev->dev, "failed to register MOST interface\n"); - goto err_stop_thread; - } - - return 0; + return most_register_interface(&dev->most_iface); -err_stop_thread: - kthread_stop(dev->netinfo_task); err_shutdown_dim: dim_shutdown(); err_disable_platform: if (dev->disable_platform) dev->disable_platform(pdev); +err_free_dev: + kfree(dev); return ret; } @@ -906,17 +920,8 @@ static int dim2_probe(struct platform_device *pdev) static int dim2_remove(struct platform_device *pdev) { struct dim2_hdm *dev = platform_get_drvdata(pdev); - unsigned long flags; most_deregister_interface(&dev->most_iface); - kthread_stop(dev->netinfo_task); - - spin_lock_irqsave(&dim_lock, flags); - dim_shutdown(); - spin_unlock_irqrestore(&dim_lock, flags); - - if (dev->disable_platform) - dev->disable_platform(pdev); return 0; }

2 years, 11 months

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[PATCH v2] x86/setup: call early_reserve_memory() earlier

by Juergen Gross

Commit a799c2bd29d19c565 ("x86/setup: Consolidate early memory reservations") introduced early_reserve_memory() to do all needed initial memblock_reserve() calls in one function. Unfortunately the call of early_reserve_memory() is done too late for Xen dom0, as in some cases a Xen hook called by e820__memory_setup() will need those memory reservations to have happened already. Move the call of early_reserve_memory() before the call of e820__memory_setup() in order to avoid such problems. Cc: stable(a)vger.kernel.org Fixes: a799c2bd29d19c565 ("x86/setup: Consolidate early memory reservations") Reported-by: Marek Marczykowski-Górecki <marmarek(a)invisiblethingslab.com> Signed-off-by: Juergen Gross <jgross(a)suse.com> --- V2: - update comment (Jan Beulich, Boris Petkov) - move call down in setup_arch() (Mike Galbraith) --- arch/x86/kernel/setup.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 79f164141116..40ed44ead063 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -830,6 +830,20 @@ void __init setup_arch(char **cmdline_p) x86_init.oem.arch_setup(); + /* + * Do some memory reservations *before* memory is added to memblock, so + * memblock allocations won't overwrite it. + * + * After this point, everything still needed from the boot loader or + * firmware or kernel text should be early reserved or marked not RAM in + * e820. All other memory is free game. + * + * This call needs to happen before e820__memory_setup() which calls the + * xen_memory_setup() on Xen dom0 which relies on the fact that those + * early reservations have happened already. + */ + early_reserve_memory(); + iomem_resource.end = (1ULL << boot_cpu_data.x86_phys_bits) - 1; e820__memory_setup(); parse_setup_data(); @@ -876,18 +890,6 @@ void __init setup_arch(char **cmdline_p) parse_early_param(); - /* - * Do some memory reservations *before* memory is added to - * memblock, so memblock allocations won't overwrite it. - * Do it after early param, so we could get (unlikely) panic from - * serial. - * - * After this point everything still needed from the boot loader or - * firmware or kernel text should be early reserved or marked not - * RAM in e820. All other memory is free game. - */ - early_reserve_memory(); - #ifdef CONFIG_MEMORY_HOTPLUG /* * Memory used by the kernel cannot be hot-removed because Linux -- 2.26.2

2 years, 11 months

12
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[PATCH] PCI: endpoint: Fix use after free in pci_epf_remove_cfs()

by Shunsuke Mie

All of entries are freed in a loop, however, the freed entry is accessed by list_del() after the loop. When epf driver that includes pci-epf-test unload, the pci_epf_remove_cfs() is called, and occurred the use after free. Therefore, kernel panics randomly after or while the module unloading. I tested this patch with r8a77951-Salvator-xs boards. Fixes: ef1433f ("PCI: endpoint: Create configfs entry for each pci_epf_device_id table entry") Signed-off-by: Shunsuke Mie <mie(a)igel.co.jp> --- drivers/pci/endpoint/pci-epf-core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c index e9289d10f822..538e902b0ba6 100644 --- a/drivers/pci/endpoint/pci-epf-core.c +++ b/drivers/pci/endpoint/pci-epf-core.c @@ -202,8 +202,10 @@ static void pci_epf_remove_cfs(struct pci_epf_driver *driver) return; mutex_lock(&pci_epf_mutex); - list_for_each_entry_safe(group, tmp, &driver->epf_group, group_entry) + list_for_each_entry_safe(group, tmp, &driver->epf_group, group_entry) { + list_del(&group->group_entry); pci_ep_cfs_remove_epf_group(group); + } list_del(&driver->epf_group); mutex_unlock(&pci_epf_mutex); } -- 2.17.1

2 years, 11 months

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[PATCH] selftests: KVM: avoid failures due to reserved HyperTransport region

by Paolo Bonzini

Accessing guest physical addresses at 0xFFFD_0000_0000 and above causes a failure on AMD processors because those addresses are reserved by HyperTransport (this is not documented). Avoid selftests failures by reserving those guest physical addresses. Fixes: ef4c9f4f6546 ("KVM: selftests: Fix 32-bit truncation of vm_get_max_gfn()") Cc: stable(a)vger.kernel.org Cc: David Matlack <dmatlack(a)google.com> Reported-by: Maxim Levitsky <mlevitsk(a)redhat.com> Signed-off-by: Paolo Bonzini <pbonzini(a)redhat.com> --- tools/testing/selftests/kvm/lib/kvm_util.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 10a8ed691c66..d995cc9836ee 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -309,6 +309,12 @@ struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm) /* Limit physical addresses to PA-bits. */ vm->max_gfn = ((1ULL << vm->pa_bits) >> vm->page_shift) - 1; +#ifdef __x86_64__ + /* Avoid reserved HyperTransport region on AMD processors. */ + if (vm->pa_bits == 48) + vm->max_gfn = 0xfffcfffff; +#endif + /* Allocate and setup memory for guest. */ vm->vpages_mapped = sparsebit_alloc(); if (phy_pages != 0) -- 2.27.0

2 years, 12 months

4
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[PATCH nf 0/2] nft_set_pipapo: Fix AVX2 MAC address match, add test

by Stefano Brivio

Patch 1/2 fixes the issue reported by Nikita where a MAC address wouldn't match if given as first field of a set, and patch 2/2 adds the corresponding test. Stefano Brivio (2): nft_set_pipapo: Fix bucket load in AVX2 lookup routine for six 8-bit groups selftests: netfilter: Add correctness test for mac,net set type net/netfilter/nft_set_pipapo_avx2.c | 2 +- .../selftests/netfilter/nft_concat_range.sh | 24 ++++++++++++++++--- 2 files changed, 22 insertions(+), 4 deletions(-) -- 2.30.2

2 years, 12 months

3
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[PATCH] scsi: qla2xxx: Format log strings only if needed

by Roman Bolshakov

Commit 598a90f2002c4 ("scsi: qla2xxx: add ring buffer for tracing debug logs") introduced unconditional log string formatting to ql_dbg() even if ql_dbg_log event is disabled. It harms performance because some strings are formatted in fastpath and/or interrupt context. Cc: Rajan Shanmugavelu <rajan.shanmugavelu(a)oracle.com> Cc: stable(a)vger.kernel.org Fixes: 598a90f2002c4 ("scsi: qla2xxx: add ring buffer for tracing debug logs") Signed-off-by: Roman Bolshakov <r.bolshakov(a)yadro.com> --- drivers/scsi/qla2xxx/qla_dbg.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c index 25549a8a2d72..7cf1f78cbaee 100644 --- a/drivers/scsi/qla2xxx/qla_dbg.c +++ b/drivers/scsi/qla2xxx/qla_dbg.c @@ -2491,6 +2491,9 @@ ql_dbg(uint level, scsi_qla_host_t *vha, uint id, const char *fmt, ...) struct va_format vaf; char pbuf[64]; + if (!ql_mask_match(level) && !trace_ql_dbg_log_enabled()) + return; + va_start(va, fmt); vaf.fmt = fmt; -- 2.33.1

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Linux-stable-mirror November 2021