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[PATCH] net: sfp: add potron quirk to the H-COM SPP425H-GAB4 SFP+ Stick

by Hamza Mahfooz

This is another one of those XGSPON ONU sticks that's using the X-ONU-SFPP internally, thus it also requires the potron quirk to avoid tx faults. So, add an entry for it in sfp_quirks[]. Cc: stable(a)vger.kernel.org Signed-off-by: Hamza Mahfooz <someguy(a)effective-light.com> --- drivers/net/phy/sfp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c index 84bef5099dda..47f095bd91ce 100644 --- a/drivers/net/phy/sfp.c +++ b/drivers/net/phy/sfp.c @@ -519,6 +519,8 @@ static const struct sfp_quirk sfp_quirks[] = { SFP_QUIRK_F("HALNy", "HL-GSFP", sfp_fixup_halny_gsfp), + SFP_QUIRK_F("H-COM", "SPP425H-GAB4", sfp_fixup_potron), + // HG MXPD-483II-F 2.5G supports 2500Base-X, but incorrectly reports // 2600MBd in their EERPOM SFP_QUIRK_S("HG GENUINE", "MXPD-483II", sfp_quirk_2500basex), -- 2.52.0

15 hours, 14 minutes

+ mm-memory-failure-teach-kill_accessing_process-to-accept-hugetlb-tail-page-pfn.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: mm/memory-failure: teach kill_accessing_process to accept hugetlb tail page pfn has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-memory-failure-teach-kill_accessing_process-to-accept-hugetlb-tail-page-pfn.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 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 via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Jane Chu <jane.chu(a)oracle.com> Subject: mm/memory-failure: teach kill_accessing_process to accept hugetlb tail page pfn Date: Tue, 13 Jan 2026 01:07:51 -0700 When a hugetlb folio is being poisoned again, try_memory_failure_hugetlb() passed head pfn to kill_accessing_process(), that is not right. The precise pfn of the poisoned page should be used in order to determine the precise vaddr as the SIGBUS payload. This issue has already been taken care of in the normal path, that is, hwpoison_user_mappings(), see [1][2]. Further more, for [3] to work correctly in the hugetlb repoisoning case, it's essential to inform VM the precise poisoned page, not the head page. Link: https://lkml.kernel.org/r/20260113080751.2173497-2-jane.chu@oracle.com Link: https://lkml.kernel.org/r/20231218135837.3310403-1-willy@infradead.org [1] Link: https://lkml.kernel.org/r/20250224211445.2663312-1-jane.chu@oracle.com [2] Link: https://lore.kernel.org/lkml/20251116013223.1557158-1-jiaqiyan@google.com/ [3] Signed-off-by: Jane Chu <jane.chu(a)oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett(a)oracle.com> Cc: David Hildenbrand <david(a)kernel.org> Cc: David Rientjes <rientjes(a)google.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: Miaohe Lin <linmiaohe(a)huawei.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Muchun Song <muchun.song(a)linux.dev> Cc: Naoya Horiguchi <nao.horiguchi(a)gmail.com> Cc: Oscar Salvador <osalvador(a)suse.de> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: William Roche <william.roche(a)oracle.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/memory-failure.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) --- a/mm/memory-failure.c~mm-memory-failure-teach-kill_accessing_process-to-accept-hugetlb-tail-page-pfn +++ a/mm/memory-failure.c @@ -692,6 +692,8 @@ static int check_hwpoisoned_entry(pte_t unsigned long poisoned_pfn, struct to_kill *tk) { unsigned long pfn = 0; + unsigned long hwpoison_vaddr; + unsigned long mask; if (pte_present(pte)) { pfn = pte_pfn(pte); @@ -702,10 +704,12 @@ static int check_hwpoisoned_entry(pte_t pfn = softleaf_to_pfn(entry); } - if (!pfn || pfn != poisoned_pfn) + mask = ~((1UL << (shift - PAGE_SHIFT)) - 1); + if (!pfn || ((pfn & mask) != (poisoned_pfn & mask))) return 0; - set_to_kill(tk, addr, shift); + hwpoison_vaddr = addr + ((poisoned_pfn - pfn) << PAGE_SHIFT); + set_to_kill(tk, hwpoison_vaddr, shift); return 1; } @@ -2049,10 +2053,8 @@ retry: return action_result(pfn, MF_MSG_GET_HWPOISON, MF_IGNORED); case MF_HUGETLB_FOLIO_PRE_POISONED: case MF_HUGETLB_PAGE_PRE_POISON: - if (flags & MF_ACTION_REQUIRED) { - folio = page_folio(p); - res = kill_accessing_process(current, folio_pfn(folio), flags); - } + if (flags & MF_ACTION_REQUIRED) + res = kill_accessing_process(current, pfn, flags); if (res == MF_HUGETLB_FOLIO_PRE_POISONED) action_result(pfn, MF_MSG_ALREADY_POISONED, MF_FAILED); else _ Patches currently in -mm which might be from jane.chu(a)oracle.com are mm-memory-failure-fix-missing-mf_stats-count-in-hugetlb-poison.patch mm-memory-failure-teach-kill_accessing_process-to-accept-hugetlb-tail-page-pfn.patch

15 hours, 21 minutes

+ mm-memory-failure-fix-missing-mf_stats-count-in-hugetlb-poison.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: mm/memory-failure: fix missing ->mf_stats count in hugetlb poison has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-memory-failure-fix-missing-mf_stats-count-in-hugetlb-poison.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 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 via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Jane Chu <jane.chu(a)oracle.com> Subject: mm/memory-failure: fix missing ->mf_stats count in hugetlb poison Date: Tue, 13 Jan 2026 01:07:50 -0700 When a newly poisoned subpage ends up in an already poisoned hugetlb folio, 'num_poisoned_pages' is incremented, but the per node ->mf_stats is not. Fix the inconsistency by designating action_result() to update them both. While at it, define __get_huge_page_for_hwpoison() return values in terms of symbol names for better readibility. Also rename folio_set_hugetlb_hwpoison() to hugetlb_update_hwpoison() since the function does more than the conventional bit setting and the fact three possible return values are expected. Link: https://lkml.kernel.org/r/20260113080751.2173497-1-jane.chu@oracle.com Fixes: 18f41fa616ee4 ("mm: memory-failure: bump memory failure stats to pglist_data") Signed-off-by: Jane Chu <jane.chu(a)oracle.com> Cc: David Hildenbrand <david(a)kernel.org> Cc: David Rientjes <rientjes(a)google.com> Cc: Jiaqi Yan <jiaqiyan(a)google.com> Cc: Liam Howlett <liam.howlett(a)oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: Matthew Wilcox (Oracle) <willy(a)infradead.org> Cc: Miaohe Lin <linmiaohe(a)huawei.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Muchun Song <muchun.song(a)linux.dev> Cc: Naoya Horiguchi <nao.horiguchi(a)gmail.com> Cc: Oscar Salvador <osalvador(a)suse.de> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: William Roche <william.roche(a)oracle.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/memory-failure.c | 75 +++++++++++++++++++++++++----------------- 1 file changed, 45 insertions(+), 30 deletions(-) --- a/mm/memory-failure.c~mm-memory-failure-fix-missing-mf_stats-count-in-hugetlb-poison +++ a/mm/memory-failure.c @@ -1883,12 +1883,24 @@ static unsigned long __folio_free_raw_hw return count; } -static int folio_set_hugetlb_hwpoison(struct folio *folio, struct page *page) +#define MF_HUGETLB_FOLIO_PRE_POISONED 3 /* folio already poisoned */ +#define MF_HUGETLB_PAGE_PRE_POISON 4 /* exact page already poisoned */ +/* + * Set hugetlb folio as hwpoisoned, update folio private raw hwpoison list + * to keep track of the poisoned pages. + * Return: + * 0: folio was not already poisoned; + * MF_HUGETLB_FOLIO_PRE_POISONED: folio was already poisoned: either + * multiple pages being poisoned, or per page information unclear, + * MF_HUGETLB_PAGE_PRE_POISON: folio was already poisoned, an exact + * poisoned page is being consumed again. + */ +static int hugetlb_update_hwpoison(struct folio *folio, struct page *page) { struct llist_head *head; struct raw_hwp_page *raw_hwp; struct raw_hwp_page *p; - int ret = folio_test_set_hwpoison(folio) ? -EHWPOISON : 0; + int ret = folio_test_set_hwpoison(folio) ? MF_HUGETLB_FOLIO_PRE_POISONED : 0; /* * Once the hwpoison hugepage has lost reliable raw error info, @@ -1896,20 +1908,17 @@ static int folio_set_hugetlb_hwpoison(st * so skip to add additional raw error info. */ if (folio_test_hugetlb_raw_hwp_unreliable(folio)) - return -EHWPOISON; + return MF_HUGETLB_FOLIO_PRE_POISONED; head = raw_hwp_list_head(folio); llist_for_each_entry(p, head->first, node) { if (p->page == page) - return -EHWPOISON; + return MF_HUGETLB_PAGE_PRE_POISON; } raw_hwp = kmalloc(sizeof(struct raw_hwp_page), GFP_ATOMIC); if (raw_hwp) { raw_hwp->page = page; llist_add(&raw_hwp->node, head); - /* the first error event will be counted in action_result(). */ - if (ret) - num_poisoned_pages_inc(page_to_pfn(page)); } else { /* * Failed to save raw error info. We no longer trace all @@ -1955,44 +1964,43 @@ void folio_clear_hugetlb_hwpoison(struct folio_free_raw_hwp(folio, true); } +#define MF_HUGETLB_FREED 0 /* freed hugepage */ +#define MF_HUGETLB_IN_USED 1 /* in-use hugepage */ /* * Called from hugetlb code with hugetlb_lock held. - * - * Return values: - * 0 - free hugepage - * 1 - in-use hugepage - * 2 - not a hugepage - * -EBUSY - the hugepage is busy (try to retry) - * -EHWPOISON - the hugepage is already hwpoisoned */ int __get_huge_page_for_hwpoison(unsigned long pfn, int flags, bool *migratable_cleared) { struct page *page = pfn_to_page(pfn); struct folio *folio = page_folio(page); - int ret = 2; /* fallback to normal page handling */ + int ret = -EINVAL; bool count_increased = false; + int rc; if (!folio_test_hugetlb(folio)) goto out; if (flags & MF_COUNT_INCREASED) { - ret = 1; + ret = MF_HUGETLB_IN_USED; count_increased = true; } else if (folio_test_hugetlb_freed(folio)) { - ret = 0; + ret = MF_HUGETLB_FREED; } else if (folio_test_hugetlb_migratable(folio)) { - ret = folio_try_get(folio); - if (ret) + if (folio_try_get(folio)) { + ret = MF_HUGETLB_IN_USED; count_increased = true; + } else + ret = MF_HUGETLB_FREED; } else { ret = -EBUSY; if (!(flags & MF_NO_RETRY)) goto out; } - if (folio_set_hugetlb_hwpoison(folio, page)) { - ret = -EHWPOISON; + rc = hugetlb_update_hwpoison(folio, page); + if (rc >= MF_HUGETLB_FOLIO_PRE_POISONED) { + ret = rc; goto out; } @@ -2029,22 +2037,29 @@ static int try_memory_failure_hugetlb(un *hugetlb = 1; retry: res = get_huge_page_for_hwpoison(pfn, flags, &migratable_cleared); - if (res == 2) { /* fallback to normal page handling */ + switch (res) { + case -EINVAL: /* fallback to normal page handling */ *hugetlb = 0; return 0; - } else if (res == -EHWPOISON) { - if (flags & MF_ACTION_REQUIRED) { - folio = page_folio(p); - res = kill_accessing_process(current, folio_pfn(folio), flags); - } - action_result(pfn, MF_MSG_ALREADY_POISONED, MF_FAILED); - return res; - } else if (res == -EBUSY) { + case -EBUSY: if (!(flags & MF_NO_RETRY)) { flags |= MF_NO_RETRY; goto retry; } return action_result(pfn, MF_MSG_GET_HWPOISON, MF_IGNORED); + case MF_HUGETLB_FOLIO_PRE_POISONED: + case MF_HUGETLB_PAGE_PRE_POISON: + if (flags & MF_ACTION_REQUIRED) { + folio = page_folio(p); + res = kill_accessing_process(current, folio_pfn(folio), flags); + } + if (res == MF_HUGETLB_FOLIO_PRE_POISONED) + action_result(pfn, MF_MSG_ALREADY_POISONED, MF_FAILED); + else + action_result(pfn, MF_MSG_HUGE, MF_FAILED); + return res; + default: + break; } folio = page_folio(p); _ Patches currently in -mm which might be from jane.chu(a)oracle.com are mm-memory-failure-fix-missing-mf_stats-count-in-hugetlb-poison.patch mm-memory-failure-teach-kill_accessing_process-to-accept-hugetlb-tail-page-pfn.patch

15 hours, 21 minutes

[PATCH v4 1/2] mm/memory-failure: fix missing ->mf_stats count in hugetlb poison

by Jane Chu

When a newly poisoned subpage ends up in an already poisoned hugetlb folio, 'num_poisoned_pages' is incremented, but the per node ->mf_stats is not. Fix the inconsistency by designating action_result() to update them both. While at it, define __get_huge_page_for_hwpoison() return values in terms of symbol names for better readibility. Also rename folio_set_hugetlb_hwpoison() to hugetlb_update_hwpoison() since the function does more than the conventional bit setting and the fact three possible return values are expected. Fixes: 18f41fa616ee4 ("mm: memory-failure: bump memory failure stats to pglist_data") Cc: <stable(a)vger.kernel.org> Signed-off-by: Jane Chu <jane.chu(a)oracle.com> --- v3 -> v4: incorporate/adapt David's suggestions. v2 -> v3: No change. v1 -> v2: adapted David and Liam's comment, define __get_huge_page_for_hwpoison() return values in terms of symbol names instead of naked integers for better readibility. #define instead of enum is used since the function has footprint outside MF, just try to limit the MF specifics local. also renamed folio_set_hugetlb_hwpoison() to hugetlb_update_hwpoison() since the function does more than the conventional bit setting and the fact three possible return values are expected. --- mm/memory-failure.c | 75 +++++++++++++++++++++++++++------------------ 1 file changed, 45 insertions(+), 30 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index fbc5a01260c8..b3e27451d618 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1883,12 +1883,24 @@ static unsigned long __folio_free_raw_hwp(struct folio *folio, bool move_flag) return count; } -static int folio_set_hugetlb_hwpoison(struct folio *folio, struct page *page) +#define MF_HUGETLB_FOLIO_PRE_POISONED 3 /* folio already poisoned */ +#define MF_HUGETLB_PAGE_PRE_POISON 4 /* exact page already poisoned */ +/* + * Set hugetlb folio as hwpoisoned, update folio private raw hwpoison list + * to keep track of the poisoned pages. + * Return: + * 0: folio was not already poisoned; + * MF_HUGETLB_FOLIO_PRE_POISONED: folio was already poisoned: either + * multiple pages being poisoned, or per page information unclear, + * MF_HUGETLB_PAGE_PRE_POISON: folio was already poisoned, an exact + * poisoned page is being consumed again. + */ +static int hugetlb_update_hwpoison(struct folio *folio, struct page *page) { struct llist_head *head; struct raw_hwp_page *raw_hwp; struct raw_hwp_page *p; - int ret = folio_test_set_hwpoison(folio) ? -EHWPOISON : 0; + int ret = folio_test_set_hwpoison(folio) ? MF_HUGETLB_FOLIO_PRE_POISONED : 0; /* * Once the hwpoison hugepage has lost reliable raw error info, @@ -1896,20 +1908,17 @@ static int folio_set_hugetlb_hwpoison(struct folio *folio, struct page *page) * so skip to add additional raw error info. */ if (folio_test_hugetlb_raw_hwp_unreliable(folio)) - return -EHWPOISON; + return MF_HUGETLB_FOLIO_PRE_POISONED; head = raw_hwp_list_head(folio); llist_for_each_entry(p, head->first, node) { if (p->page == page) - return -EHWPOISON; + return MF_HUGETLB_PAGE_PRE_POISON; } raw_hwp = kmalloc(sizeof(struct raw_hwp_page), GFP_ATOMIC); if (raw_hwp) { raw_hwp->page = page; llist_add(&raw_hwp->node, head); - /* the first error event will be counted in action_result(). */ - if (ret) - num_poisoned_pages_inc(page_to_pfn(page)); } else { /* * Failed to save raw error info. We no longer trace all @@ -1955,44 +1964,43 @@ void folio_clear_hugetlb_hwpoison(struct folio *folio) folio_free_raw_hwp(folio, true); } +#define MF_HUGETLB_FREED 0 /* freed hugepage */ +#define MF_HUGETLB_IN_USED 1 /* in-use hugepage */ /* * Called from hugetlb code with hugetlb_lock held. - * - * Return values: - * 0 - free hugepage - * 1 - in-use hugepage - * 2 - not a hugepage - * -EBUSY - the hugepage is busy (try to retry) - * -EHWPOISON - the hugepage is already hwpoisoned */ int __get_huge_page_for_hwpoison(unsigned long pfn, int flags, bool *migratable_cleared) { struct page *page = pfn_to_page(pfn); struct folio *folio = page_folio(page); - int ret = 2; /* fallback to normal page handling */ + int ret = -EINVAL; bool count_increased = false; + int rc; if (!folio_test_hugetlb(folio)) goto out; if (flags & MF_COUNT_INCREASED) { - ret = 1; + ret = MF_HUGETLB_IN_USED; count_increased = true; } else if (folio_test_hugetlb_freed(folio)) { - ret = 0; + ret = MF_HUGETLB_FREED; } else if (folio_test_hugetlb_migratable(folio)) { - ret = folio_try_get(folio); - if (ret) + if (folio_try_get(folio)) { + ret = MF_HUGETLB_IN_USED; count_increased = true; + } else + ret = MF_HUGETLB_FREED; } else { ret = -EBUSY; if (!(flags & MF_NO_RETRY)) goto out; } - if (folio_set_hugetlb_hwpoison(folio, page)) { - ret = -EHWPOISON; + rc = hugetlb_update_hwpoison(folio, page); + if (rc >= MF_HUGETLB_FOLIO_PRE_POISONED) { + ret = rc; goto out; } @@ -2029,22 +2037,29 @@ static int try_memory_failure_hugetlb(unsigned long pfn, int flags, int *hugetlb *hugetlb = 1; retry: res = get_huge_page_for_hwpoison(pfn, flags, &migratable_cleared); - if (res == 2) { /* fallback to normal page handling */ + switch (res) { + case -EINVAL: /* fallback to normal page handling */ *hugetlb = 0; return 0; - } else if (res == -EHWPOISON) { - if (flags & MF_ACTION_REQUIRED) { - folio = page_folio(p); - res = kill_accessing_process(current, folio_pfn(folio), flags); - } - action_result(pfn, MF_MSG_ALREADY_POISONED, MF_FAILED); - return res; - } else if (res == -EBUSY) { + case -EBUSY: if (!(flags & MF_NO_RETRY)) { flags |= MF_NO_RETRY; goto retry; } return action_result(pfn, MF_MSG_GET_HWPOISON, MF_IGNORED); + case MF_HUGETLB_FOLIO_PRE_POISONED: + case MF_HUGETLB_PAGE_PRE_POISON: + if (flags & MF_ACTION_REQUIRED) { + folio = page_folio(p); + res = kill_accessing_process(current, folio_pfn(folio), flags); + } + if (res == MF_HUGETLB_FOLIO_PRE_POISONED) + action_result(pfn, MF_MSG_ALREADY_POISONED, MF_FAILED); + else + action_result(pfn, MF_MSG_HUGE, MF_FAILED); + return res; + default: + break; } folio = page_folio(p); -- 2.43.5

15 hours, 21 minutes

[PATCH] drm/amd/display: Add an hdmi_hpd_debounce_delay_ms module

by IVAN.LIPSKI＠amd.com

From: Ivan Lipski <ivan.lipski(a)amd.com> [Why&How] Right now, the HDMI HPD filter is enabled by default at 1500ms. We want to disable it by default, as most modern displays with HDMI do not require it for DPMS mode. The HPD can instead be enabled as a driver parameter with a custom delay value in ms (up to 5000ms). Fixes: c97da4785b3b ("drm/amd/display: Add an HPD filter for HDMI") Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4859 Signed-off-by: Ivan Lipski <ivan.lipski(a)amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 ++ drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 11 +++++++++++ drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 15 ++++++++++++--- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 5 ++++- 4 files changed, 29 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 11a36c132905..9903da2d28b0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -269,6 +269,8 @@ extern int amdgpu_rebar; extern int amdgpu_wbrf; extern int amdgpu_user_queue; +extern int amdgpu_hdmi_hpd_debounce_delay_ms; + #define AMDGPU_VM_MAX_NUM_CTX 4096 #define AMDGPU_SG_THRESHOLD (256*1024*1024) #define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS 3000 diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index d67bbaa8ce02..771c89c84608 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -247,6 +247,7 @@ int amdgpu_damage_clips = -1; /* auto */ int amdgpu_umsch_mm_fwlog; int amdgpu_rebar = -1; /* auto */ int amdgpu_user_queue = -1; +uint amdgpu_hdmi_hpd_debounce_delay_ms; DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, "DRM_UT_CORE", @@ -1123,6 +1124,16 @@ module_param_named(rebar, amdgpu_rebar, int, 0444); MODULE_PARM_DESC(user_queue, "Enable user queues (-1 = auto (default), 0 = disable, 1 = enable, 2 = enable UQs and disable KQs)"); module_param_named(user_queue, amdgpu_user_queue, int, 0444); +/* + * DOC: hdmi_hpd_debounce_delay_ms (uint) + * HDMI HPD disconnect debounce delay in milliseconds. + * + * Used to filter short disconnect->reconnect HPD toggles some HDMI sinks + * generate while entering/leaving power save. Set to 0 to disable by default. + */ +MODULE_PARM_DESC(hdmi_hpd_debounce_delay_ms, "HDMI HPD disconnect debounce delay in milliseconds (0 to disable (by default), 1500 is common)"); +module_param_named(hdmi_hpd_debounce_delay_ms, amdgpu_hdmi_hpd_debounce_delay_ms, uint, 0644); + /* These devices are not supported by amdgpu. * They are supported by the mach64, r128, radeon drivers */ diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 354e359c4507..ba7e1f72fde1 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -8918,9 +8918,18 @@ void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm, mutex_init(&aconnector->hpd_lock); mutex_init(&aconnector->handle_mst_msg_ready); - aconnector->hdmi_hpd_debounce_delay_ms = AMDGPU_DM_HDMI_HPD_DEBOUNCE_MS; - INIT_DELAYED_WORK(&aconnector->hdmi_hpd_debounce_work, hdmi_hpd_debounce_work); - aconnector->hdmi_prev_sink = NULL; + /* + * If HDMI HPD debounce delay is set, use the minimum between selected + * value and AMDGPU_DM_MAX_HDMI_HPD_DEBOUNCE_MS + */ + if (amdgpu_hdmi_hpd_debounce_delay_ms) { + aconnector->hdmi_hpd_debounce_delay_ms = min(amdgpu_hdmi_hpd_debounce_delay_ms, + AMDGPU_DM_MAX_HDMI_HPD_DEBOUNCE_MS); + INIT_DELAYED_WORK(&aconnector->hdmi_hpd_debounce_work, hdmi_hpd_debounce_work); + aconnector->hdmi_prev_sink = NULL; + } else { + aconnector->hdmi_hpd_debounce_delay_ms = 0; + } /* * configure support HPD hot plug connector_>polled default value is 0 diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index 7065b20aa2e6..6fe7f78b66c5 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -59,7 +59,10 @@ #define AMDGPU_HDR_MULT_DEFAULT (0x100000000LL) -#define AMDGPU_DM_HDMI_HPD_DEBOUNCE_MS 1500 +/* + * Maximum HDMI HPD debounce delay in milliseconds + */ +#define AMDGPU_DM_MAX_HDMI_HPD_DEBOUNCE_MS 5000 /* #include "include/amdgpu_dal_power_if.h" #include "amdgpu_dm_irq.h" -- 2.43.0

16 hours, 5 minutes

+ mm-kasan-fix-kasan-poisoning-in-vrealloc.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: mm/kasan: fix KASAN poisoning in vrealloc() has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-kasan-fix-kasan-poisoning-in-vrealloc.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 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 via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Andrey Ryabinin <ryabinin.a.a(a)gmail.com> Subject: mm/kasan: fix KASAN poisoning in vrealloc() Date: Tue, 13 Jan 2026 20:15:15 +0100 A KASAN warning can be triggered when vrealloc() changes the requested size to a value that is not aligned to KASAN_GRANULE_SIZE. ------------[ cut here ]------------ WARNING: CPU: 2 PID: 1 at mm/kasan/shadow.c:174 kasan_unpoison+0x40/0x48 ... pc : kasan_unpoison+0x40/0x48 lr : __kasan_unpoison_vmalloc+0x40/0x68 Call trace: kasan_unpoison+0x40/0x48 (P) vrealloc_node_align_noprof+0x200/0x320 bpf_patch_insn_data+0x90/0x2f0 convert_ctx_accesses+0x8c0/0x1158 bpf_check+0x1488/0x1900 bpf_prog_load+0xd20/0x1258 __sys_bpf+0x96c/0xdf0 __arm64_sys_bpf+0x50/0xa0 invoke_syscall+0x90/0x160 Introduce a dedicated kasan_vrealloc() helper that centralizes KASAN handling for vmalloc reallocations. The helper accounts for KASAN granule alignment when growing or shrinking an allocation and ensures that partial granules are handled correctly. Use this helper from vrealloc_node_align_noprof() to fix poisoning logic. Link: https://lkml.kernel.org/r/20260113191516.31015-1-ryabinin.a.a@gmail.com Fixes: d699440f58ce ("mm: fix vrealloc()'s KASAN poisoning logic") Signed-off-by: Andrey Ryabinin <ryabinin.a.a(a)gmail.com> Reported-by: Maciej ��enczykowski <maze(a)google.com> Reported-by: <joonki.min(a)samsung-slsi.corp-partner.google.com> Closes: https://lkml.kernel.org/r/CANP3RGeuRW53vukDy7WDO3FiVgu34-xVJYkfpm08oLO3odYF… Cc: Alexander Potapenko <glider(a)google.com> Cc: Andrey Konovalov <andreyknvl(a)gmail.com> Cc: Dmitriy Vyukov <dvyukov(a)google.com> Cc: Dmitry Vyukov <dvyukov(a)google.com> Cc: Uladzislau Rezki <urezki(a)gmail.com> Cc: Vincenzo Frascino <vincenzo.frascino(a)arm.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- include/linux/kasan.h | 6 ++++++ mm/kasan/shadow.c | 24 ++++++++++++++++++++++++ mm/vmalloc.c | 7 ++----- 3 files changed, 32 insertions(+), 5 deletions(-) --- a/include/linux/kasan.h~mm-kasan-fix-kasan-poisoning-in-vrealloc +++ a/include/linux/kasan.h @@ -641,6 +641,9 @@ kasan_unpoison_vmap_areas(struct vm_stru __kasan_unpoison_vmap_areas(vms, nr_vms, flags); } +void kasan_vrealloc(const void *start, unsigned long old_size, + unsigned long new_size); + #else /* CONFIG_KASAN_VMALLOC */ static inline void kasan_populate_early_vm_area_shadow(void *start, @@ -670,6 +673,9 @@ kasan_unpoison_vmap_areas(struct vm_stru kasan_vmalloc_flags_t flags) { } +static inline void kasan_vrealloc(const void *start, unsigned long old_size, + unsigned long new_size) { } + #endif /* CONFIG_KASAN_VMALLOC */ #if (defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) && \ --- a/mm/kasan/shadow.c~mm-kasan-fix-kasan-poisoning-in-vrealloc +++ a/mm/kasan/shadow.c @@ -651,6 +651,30 @@ void __kasan_poison_vmalloc(const void * kasan_poison(start, size, KASAN_VMALLOC_INVALID, false); } +void kasan_vrealloc(const void *addr, unsigned long old_size, + unsigned long new_size) +{ + if (!kasan_enabled()) + return; + + if (new_size < old_size) { + kasan_poison_last_granule(addr, new_size); + + new_size = round_up(new_size, KASAN_GRANULE_SIZE); + old_size = round_up(old_size, KASAN_GRANULE_SIZE); + if (new_size < old_size) + __kasan_poison_vmalloc(addr + new_size, + old_size - new_size); + } else if (new_size > old_size) { + old_size = round_down(old_size, KASAN_GRANULE_SIZE); + __kasan_unpoison_vmalloc(addr + old_size, + new_size - old_size, + KASAN_VMALLOC_PROT_NORMAL | + KASAN_VMALLOC_VM_ALLOC | + KASAN_VMALLOC_KEEP_TAG); + } +} + #else /* CONFIG_KASAN_VMALLOC */ int kasan_alloc_module_shadow(void *addr, size_t size, gfp_t gfp_mask) --- a/mm/vmalloc.c~mm-kasan-fix-kasan-poisoning-in-vrealloc +++ a/mm/vmalloc.c @@ -4322,7 +4322,7 @@ void *vrealloc_node_align_noprof(const v if (want_init_on_free() || want_init_on_alloc(flags)) memset((void *)p + size, 0, old_size - size); vm->requested_size = size; - kasan_poison_vmalloc(p + size, old_size - size); + kasan_vrealloc(p, old_size, size); return (void *)p; } @@ -4330,16 +4330,13 @@ void *vrealloc_node_align_noprof(const v * We already have the bytes available in the allocation; use them. */ if (size <= alloced_size) { - kasan_unpoison_vmalloc(p + old_size, size - old_size, - KASAN_VMALLOC_PROT_NORMAL | - KASAN_VMALLOC_VM_ALLOC | - KASAN_VMALLOC_KEEP_TAG); /* * No need to zero memory here, as unused memory will have * already been zeroed at initial allocation time or during * realloc shrink time. */ vm->requested_size = size; + kasan_vrealloc(p, old_size, size); return (void *)p; } _ Patches currently in -mm which might be from ryabinin.a.a(a)gmail.com are mm-kasan-fix-kasan-poisoning-in-vrealloc.patch

16 hours, 34 minutes

[PATCH v5] PCI: loongson: Override PCIe bridge supported speeds for Loongson-3C6000 series

by Ziyao Li via B4 Relay

From: Ziyao Li <liziyao(a)uniontech.com> Older steppings of the Loongson-3C6000 series incorrectly report the supported link speeds on their PCIe bridges (device IDs 0x3c19, 0x3c29) as only 2.5 GT/s, despite the upstream bus supporting speeds from 2.5 GT/s up to 16 GT/s. As a result, since commit 774c71c52aa4 ("PCI/bwctrl: Enable only if more than one speed is supported"), bwctrl will be disabled if there's only one 2.5 GT/s value in vector `supported_speeds`. Also, amdgpu reads the value by pcie_get_speed_cap() in amdgpu_device_ partner_bandwidth(), for its dynamic adjustment of PCIe clocks and lanes in power management. We hope this can prevent similar problems in future driver changes (similar checks may be implemented in other GPU, storage controller, NIC, etc. drivers). Manually override the `supported_speeds` field for affected PCIe bridges with those found on the upstream bus to correctly reflect the supported link speeds. This patch was originally found from AOSC OS[1]. Link: https://github.com/AOSC-Tracking/linux/pull/2 #1 Tested-by: Lain Fearyncess Yang <fsf(a)live.com> Tested-by: Ayden Meng <aydenmeng(a)yeah.net> Signed-off-by: Ayden Meng <aydenmeng(a)yeah.net> Signed-off-by: Mingcong Bai <jeffbai(a)aosc.io> [Xi Ruoyao: Fix falling through logic and add kernel log output.] Signed-off-by: Xi Ruoyao <xry111(a)xry111.site> Link: https://github.com/AOSC-Tracking/linux/commit/4392f441363abdf6fa0a0433d7317… [Ziyao Li: move from drivers/pci/quirks.c to drivers/pci/controller/pci-loongson.c] Signed-off-by: Ziyao Li <liziyao(a)uniontech.com> Tested-by: Mingcong Bai <jeffbai(a)aosc.io> Reviewed-by: Huacai Chen <chenhuacai(a)loongson.cn> --- Changes in v5: - style adjust - Link to v4: https://lore.kernel.org/r/20260113-loongson-pci1-v4-1-1921d6479fe4@uniontec… Changes in v4: - rename subject - use 0x3c19/0x3c29 instead of 3c19/3c29 - Link to v3: https://lore.kernel.org/r/20260109-loongson-pci1-v3-1-5ddc5ae3ba93@uniontec… Changes in v3: - Adjust commit message - Make the program flow more intuitive - Link to v2: https://lore.kernel.org/r/20260104-loongson-pci1-v2-1-d151e57b6ef8@uniontec… Changes in v2: - Link to v1: https://lore.kernel.org/r/20250822-loongson-pci1-v1-1-39aabbd11fbd@uniontec… - Move from arch/loongarch/pci/pci.c to drivers/pci/controller/pci-loongson.c - Fix falling through logic and add kernel log output by Xi Ruoyao --- drivers/pci/controller/pci-loongson.c | 36 +++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/pci/controller/pci-loongson.c b/drivers/pci/controller/pci-loongson.c index bc630ab8a283..a4250d7af1bf 100644 --- a/drivers/pci/controller/pci-loongson.c +++ b/drivers/pci/controller/pci-loongson.c @@ -176,6 +176,42 @@ static void loongson_pci_msi_quirk(struct pci_dev *dev) } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LOONGSON, DEV_LS7A_PCIE_PORT5, loongson_pci_msi_quirk); +/* + * Older steppings of the Loongson-3C6000 series incorrectly report the + * supported link speeds on their PCIe bridges (device IDs 0x3c19, + * 0x3c29) as only 2.5 GT/s, despite the upstream bus supporting speeds + * from 2.5 GT/s up to 16 GT/s. + */ +static void loongson_pci_bridge_speed_quirk(struct pci_dev *pdev) +{ + u8 old_supported_speeds = pdev->supported_speeds; + + switch (pdev->bus->max_bus_speed) { + case PCIE_SPEED_16_0GT: + pdev->supported_speeds |= PCI_EXP_LNKCAP2_SLS_16_0GB; + fallthrough; + case PCIE_SPEED_8_0GT: + pdev->supported_speeds |= PCI_EXP_LNKCAP2_SLS_8_0GB; + fallthrough; + case PCIE_SPEED_5_0GT: + pdev->supported_speeds |= PCI_EXP_LNKCAP2_SLS_5_0GB; + fallthrough; + case PCIE_SPEED_2_5GT: + pdev->supported_speeds |= PCI_EXP_LNKCAP2_SLS_2_5GB; + break; + default: + pci_warn(pdev, "unexpected max bus speed"); + + return; + } + + if (pdev->supported_speeds != old_supported_speeds) + pci_info(pdev, "fixing up supported link speeds: 0x%x => 0x%x", + old_supported_speeds, pdev->supported_speeds); +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LOONGSON, 0x3c19, loongson_pci_bridge_speed_quirk); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LOONGSON, 0x3c29, loongson_pci_bridge_speed_quirk); + static struct loongson_pci *pci_bus_to_loongson_pci(struct pci_bus *bus) { struct pci_config_window *cfg; --- base-commit: ea1013c1539270e372fc99854bc6e4d94eaeff66 change-id: 20250822-loongson-pci1-4ded0d78f1bb Best regards, -- Ziyao Li <liziyao(a)uniontech.com>

16 hours, 37 minutes

[PATCH] perf Documentation: Correct branch stack sampling call-stack option

by Dapeng Mi

The correct call-stack option for branch stack sampling should be "stack" instead of "call_stack". Correct it. $perf record -e instructions -j call_stack -- sleep 1 unknown branch filter call_stack, check man page Usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -j, --branch-filter <branch filter mask> branch stack filter modes Cc: stable(a)vger.kernel.org Fixes: 955f6def5590 ("perf record: Add remaining branch filters: "no_cycles", "no_flags" & "hw_index"") Signed-off-by: Dapeng Mi <dapeng1.mi(a)linux.intel.com> --- tools/perf/Documentation/perf-record.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index e8b9aadbbfa5..3d19e77c9c53 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -454,7 +454,7 @@ following filters are defined: - no_tx: only when the target is not in a hardware transaction - abort_tx: only when the target is a hardware transaction abort - cond: conditional branches - - call_stack: save call stack + - stack: save call stack - no_flags: don't save branch flags e.g prediction, misprediction etc - no_cycles: don't save branch cycles - hw_index: save branch hardware index base-commit: cb015814f8b6eebcbb8e46e111d108892c5e6821 -- 2.34.1

18 hours, 13 minutes

Apply 70740454377f1ba3ff32f5df4acd965db99d055b to linux-6.12.y

by Nathan Chancellor

Hi Greg and Sasha, Commit 70740454377f ("drm/amd/display: Apply e4479aecf658 to dml") was recently queued up for 6.18. This same change will be needed in 6.12 but it will need commit 820ccf8cb2b1 ("drm/amd/display: Respect user's CONFIG_FRAME_WARN more for dml files") applied first for it to apply cleanly. Please let me know if there are any problems with this. Cheers, Nathan

18 hours, 42 minutes

[PATCH v3] zstd: fixed possible 'rtbTable' underflow in FSE_normalizeCount()

by Ilya Krutskih

'rtbTable' may be underflowed because 'proba' is used without checking for a non-negative as index of rtbTable[]. Add check: proba >= 0 Cc: stable(a)vger.kernel.org # v5.10+ Fixes: e0c1b49f5b67 ("lib: zstd: Upgrade to latest upstream zstd version 1.4.10") Signed-off-by: Ilya Krutskih <devsec(a)tpz.ru> --- lib/zstd/compress/fse_compress.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/lib/zstd/compress/fse_compress.c b/lib/zstd/compress/fse_compress.c index 44a3c10becf2..6b83f8bc943a 100644 --- a/lib/zstd/compress/fse_compress.c +++ b/lib/zstd/compress/fse_compress.c @@ -492,9 +492,10 @@ size_t FSE_normalizeCount (short* normalizedCounter, unsigned tableLog, stillToDistribute--; } else { short proba = (short)((count[s]*step) >> scale); - if (proba<8) { - U64 restToBeat = vStep * rtbTable[proba]; - proba += (count[s]*step) - ((U64)proba<<scale) > restToBeat; + if ((proba >= 0) && (proba < 8)) { + U64 restToBeat = vStep * rtbTable[proba]; + + proba += (count[s]*step) - ((U64)proba<<scale) > restToBeat; } if (proba > largestP) { largestP=proba; largest=s; } normalizedCounter[s] = proba; -- 2.43.0

19 hours, 45 minutes

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