') + ')', 'gi'); if (regex.test(text)) { found = true; var frag = document.createDocumentFragment(); var parts = text.split(regex); parts.forEach(function(part, i) { if (i % 2 === 0) { frag.appendChild(document.createTextNode(part)); } else { var span = document.createElement('span'); span.className = 'userscript-highlight'; span.textContent = part; frag.appendChild(span); } }); node.parentNode.replaceChild(frag, node); } }); } else if (node.nodeType === 1 && node.childNodes) { // element var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT']; if (!skipTags.includes(node.tagName)) { Array.from(node.childNodes).forEach(highlight); } } } highlight(document.body); // Re-highlight on dynamic content var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1 || node.nodeType === 3) highlight(node); }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ', 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ', 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ', 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); })(); ppcmmu: Track translated entries for invalidation by mihaip · Pull Request #219 · dingusdev/dingusppc · GitHub
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ppcmmu: Track translated entries for invalidation - #219

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dingusdev merged 3 commits into
dingusdev:masterfrom
mihaip:upstream-tlb-flush
Aug 21, 2026
Merged

ppcmmu: Track translated entries for invalidation#219
dingusdev merged 3 commits into
dingusdev:masterfrom
mihaip:upstream-tlb-flush

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@mihaip

@mihaipmihaip commented Aug 21, 2026•
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XNU frequently changes BAT and PAT mappings for physical-memory access. Each resulting context synchronization can walk tens of thousands of TLB entries, which consumes a lot of time.

Record the instruction and data TLB slots populated by BAT or PAT and invalidate only those slots. Pending invalidations are coalesced by source. This supersedes the PAT generational counter optimization from #199 - there are fewer BAT changes after boot, and having the overhead of a generation check on every TLB entry access would have made everything slower.

Also includes an additional optimization skip over no-op BAT writes.

Saves another 0.7 seconds in the time it takes to boot Mac OS X 10.3 to the WindowServer.

@mihaip
ppcmmu: Revert generational PAT invalidation
6f24b52
PAT generation counters make invalidation constant-time by adding a
generation check to every TLB lookup, but they added a per-access overhead
to compare generation counters. I am swithcing to an alternate approach
(explicitly tracking populated entries, which can also be used for
BAT-derived entries), and am removing this first to make that diff
easier to read.
This logically reverts the work from dingusdev#199 (the TLB helper refactoring
from dingusdev#203 prevents a mechanical revert).
@mihaip
ppcmmu: Track translated entries for invalidation
9f71ed5
XNU frequently changes BAT and PAT mappings for physical-memory access.
Each resulting context synchronization can walk tens of thousands of TLB
entries, which consumes a lot of time.
Record the instruction and data TLB slots populated by BAT or PAT and
invalidate only those slots. Pending invalidations are coalesced by source,
and BAT updates cover PAT-derived entries because a new BAT can shadow a page
mapping.
Saves another 0.7 secondss in the time it takes to boot Mac OS X 10.3 to
the WindowServer (compared to the generational PAT invalidation).
@mihaip
ppc: Ignore unchanged BAT register writes
c051937
Avoids unncessary TLB invalidations.
@mihaip
mihaipforce-pushed the upstream-tlb-flush branch from 03b1266 to c051937CompareAugust 21, 2026 05:47
@dingusdev
dingusdev merged commit dced15e into dingusdev:masterAug 21, 2026
7 checks passed
@mihaip
mihaip deleted the upstream-tlb-flush branch August 21, 2026 06:27
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@mihaip@dingusdev