From: Peter Zijlstra <peterz@infradead.org> To: Khalid Aziz <khalid.aziz@oracle.com> Cc: juergh@gmail.com, tycho@tycho.ws, jsteckli@amazon.de, ak@linux.intel.com, liran.alon@oracle.com, keescook@google.com, konrad.wilk@oracle.com, Juerg Haefliger <juerg.haefliger@canonical.com>, deepa.srinivasan@oracle.com, chris.hyser@oracle.com, tyhicks@canonical.com, dwmw@amazon.co.uk, andrew.cooper3@citrix.com, jcm@redhat.com, boris.ostrovsky@oracle.com, kanth.ghatraju@oracle.com, joao.m.martins@oracle.com, jmattson@google.com, pradeep.vincent@oracle.com, john.haxby@oracle.com, tglx@linutronix.de, kirill.shutemov@linux.intel.com, hch@lst.de, steven.sistare@oracle.com, labbott@redhat.com, luto@kernel.org, dave.hansen@intel.com, aaron.lu@intel.com, akpm@linux-foundation.org, alexander.h.duyck@linux.intel.com, amir73il@gmail.com, andreyknvl@google.com, aneesh.kumar@linux.ibm.com, anthony.yznaga@oracle.com, ard.biesheuvel@linaro.org, arnd@arndb.de, arunks@codeaurora.org, ben@decadent.org.uk, bigeasy@linutronix.de, bp@alien8.de, brgl@bgdev.pl, catalin.marinas@arm.com, corbet@lwn.net, cpandya@codeaurora.org, daniel.vetter@ffwll.ch, dan.j.williams@intel.com, gregkh@linuxfoundation.org, guro@fb.com, hannes@cmpxchg.org, hpa@zytor.com, iamjoonsoo.kim@lge.com, james.morse@arm.com, jannh@google.com, jgross@suse.com, jkosina@suse.cz, jmorris@namei.org, joe@perches.com, jrdr.linux@gmail.com, jroedel@suse.de, keith.busch@intel.com, khlebnikov@yandex-team.ru, logang@deltatee.com, marco.antonio.780@gmail.com, mark.rutland@arm.com, mgorman@techsingularity.net, mhocko@suse.com, mhocko@suse.cz, mike.kravetz@oracle.com, mingo@redhat.com, mst@redhat.com, m.szyprowski@samsung.com, npiggin@gmail.com, osalvador@suse.de, paulmck@linux.vnet.ibm.com, pavel.tatashin@microsoft.com, rdunlap@infradead.org, richard.weiyang@gmail.com, riel@surriel.com, rientjes@google.com, robin.murphy@arm.com, rostedt@goodmis.org, rppt@linux.vnet.ibm.com, sai.praneeth.prakhya@intel.com, serge@hallyn.com, steve.capper@arm.com, thymovanbeers@gmail.com, vbabka@suse.cz, will.deacon@arm.com, willy@infradead.org, yang.shi@linux.alibaba.com, yaojun8558363@gmail.com, ying.huang@intel.com, zhangshaokun@hisilicon.com, iommu@lists.linux-foundation.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-security-module@vger.kernel.org, Khalid Aziz <khalid@gonehiking.org> Subject: Re: [RFC PATCH v9 04/13] xpfo, x86: Add support for XPFO for x86-64 Date: Thu, 4 Apr 2019 09:52:06 +0200 [thread overview] Message-ID: <20190404075206.GP4038@hirez.programming.kicks-ass.net> (raw) In-Reply-To: <c15e7d09dfe3dfdb9947d39ed0ddd6573ff86dbf.1554248002.git.khalid.aziz@oracle.com> On Wed, Apr 03, 2019 at 11:34:05AM -0600, Khalid Aziz wrote: > diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h > index 2779ace16d23..5c0e1581fa56 100644 > --- a/arch/x86/include/asm/pgtable.h > +++ b/arch/x86/include/asm/pgtable.h > @@ -1437,6 +1437,32 @@ static inline bool arch_has_pfn_modify_check(void) > return boot_cpu_has_bug(X86_BUG_L1TF); > } > > +/* > + * The current flushing context - we pass it instead of 5 arguments: > + */ > +struct cpa_data { > + unsigned long *vaddr; > + pgd_t *pgd; > + pgprot_t mask_set; > + pgprot_t mask_clr; > + unsigned long numpages; > + unsigned long curpage; > + unsigned long pfn; > + unsigned int flags; > + unsigned int force_split : 1, > + force_static_prot : 1; > + struct page **pages; > +}; > + > + > +int > +should_split_large_page(pte_t *kpte, unsigned long address, > + struct cpa_data *cpa); > +extern spinlock_t cpa_lock; > +int > +__split_large_page(struct cpa_data *cpa, pte_t *kpte, unsigned long address, > + struct page *base); > + I really hate exposing all that. > #include <asm-generic/pgtable.h> > #endif /* __ASSEMBLY__ */ > > diff --git a/arch/x86/mm/xpfo.c b/arch/x86/mm/xpfo.c > new file mode 100644 > index 000000000000..3045bb7e4659 > --- /dev/null > +++ b/arch/x86/mm/xpfo.c > @@ -0,0 +1,123 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (C) 2017 Hewlett Packard Enterprise Development, L.P. > + * Copyright (C) 2016 Brown University. All rights reserved. > + * > + * Authors: > + * Juerg Haefliger <juerg.haefliger@hpe.com> > + * Vasileios P. Kemerlis <vpk@cs.brown.edu> > + * > + * This program is free software; you can redistribute it and/or modify it > + * under the terms of the GNU General Public License version 2 as published by > + * the Free Software Foundation. > + */ > + > +#include <linux/mm.h> > + > +#include <asm/tlbflush.h> > + > +extern spinlock_t cpa_lock; > + > +/* Update a single kernel page table entry */ > +inline void set_kpte(void *kaddr, struct page *page, pgprot_t prot) > +{ > + unsigned int level; > + pgprot_t msk_clr; > + pte_t *pte = lookup_address((unsigned long)kaddr, &level); > + > + if (unlikely(!pte)) { > + WARN(1, "xpfo: invalid address %p\n", kaddr); > + return; > + } > + > + switch (level) { > + case PG_LEVEL_4K: > + set_pte_atomic(pte, pfn_pte(page_to_pfn(page), > + canon_pgprot(prot))); (sorry, do we also need a nikon_pgprot() ? :-) > + break; > + case PG_LEVEL_2M: > + case PG_LEVEL_1G: { > + struct cpa_data cpa = { }; > + int do_split; > + > + if (level == PG_LEVEL_2M) > + msk_clr = pmd_pgprot(*(pmd_t *)pte); > + else > + msk_clr = pud_pgprot(*(pud_t *)pte); > + > + cpa.vaddr = kaddr; > + cpa.pages = &page; > + cpa.mask_set = prot; > + cpa.mask_clr = msk_clr; > + cpa.numpages = 1; > + cpa.flags = 0; > + cpa.curpage = 0; > + cpa.force_split = 0; > + > + > + do_split = should_split_large_page(pte, (unsigned long)kaddr, > + &cpa); > + if (do_split) { > + struct page *base; > + > + base = alloc_pages(GFP_ATOMIC, 0); > + if (!base) { > + WARN(1, "xpfo: failed to split large page\n"); You have to be fcking kidding right? A WARN when a GFP_ATOMIC allocation fails?! > + break; > + } > + > + if (!debug_pagealloc_enabled()) > + spin_lock(&cpa_lock); > + if (__split_large_page(&cpa, pte, (unsigned long)kaddr, > + base) < 0) { > + __free_page(base); > + WARN(1, "xpfo: failed to split large page\n"); > + } > + if (!debug_pagealloc_enabled()) > + spin_unlock(&cpa_lock); > + } > + > + break; Ever heard of helper functions? > + } > + case PG_LEVEL_512G: > + /* fallthrough, splitting infrastructure doesn't > + * support 512G pages. > + */ Broken coment style. > + default: > + WARN(1, "xpfo: unsupported page level %x\n", level); > + } > + > +} > +EXPORT_SYMBOL_GPL(set_kpte); > + > +inline void xpfo_flush_kernel_tlb(struct page *page, int order) > +{ > + int level; > + unsigned long size, kaddr; > + > + kaddr = (unsigned long)page_address(page); > + > + if (unlikely(!lookup_address(kaddr, &level))) { > + WARN(1, "xpfo: invalid address to flush %lx %d\n", kaddr, > + level); > + return; > + } > + > + switch (level) { > + case PG_LEVEL_4K: > + size = PAGE_SIZE; > + break; > + case PG_LEVEL_2M: > + size = PMD_SIZE; > + break; > + case PG_LEVEL_1G: > + size = PUD_SIZE; > + break; > + default: > + WARN(1, "xpfo: unsupported page level %x\n", level); > + return; > + } > + > + flush_tlb_kernel_range(kaddr, kaddr + (1 << order) * size); > +} You call this from IRQ/IRQ-disabled context... that _CANNOT_ be right.
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org> To: Khalid Aziz <khalid.aziz-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org> Cc: catalin.marinas-5wv7dgnIgG8@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org, steven.sistare-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, hch-jcswGhMUV9g@public.gmane.org, tycho-E0fblnxP3wo@public.gmane.org, ak-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, aneesh.kumar-tEXmvtCZX7AybS5Ee8rs3A@public.gmane.org, jmorris-gx6/JNMH7DfYtjvyW6yDsg@public.gmane.org, rientjes-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, anthony.yznaga-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, riel-ebMLmSuQjDVBDgjK7y7TUQ@public.gmane.org, npiggin-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, rppt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org, luto-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org, gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org, rdunlap-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, jrdr.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, jkosina-AlSwsSmVLrQ@public.gmane.org, joe-6d6DIl74uiNBDgjK7y7TUQ@public.gmane.org, arunks-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, dwmw-vV1OtcyAfmbQXOPxS62xeg@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, keith.busch-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, joao.m.martins-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org, brgl-ARrdPY/1zhM@public.gmane.org, konrad.wilk-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, jsteckli-ebkRAfMGSJGzQB+pC5nmwQ@public.gmane.org, jroedel-l3A5Bk7waGM@public.gmane.org, keescook-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, zhangshaokun-C8/M+/jPZTeaMJb+Lgu22Q@public.gmane.org, boris.ostrovsky-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, chris.hyser-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Khalid Aziz <khalid@gonehiking> Subject: Re: [RFC PATCH v9 04/13] xpfo, x86: Add support for XPFO for x86-64 Date: Thu, 4 Apr 2019 09:52:06 +0200 [thread overview] Message-ID: <20190404075206.GP4038@hirez.programming.kicks-ass.net> (raw) In-Reply-To: <c15e7d09dfe3dfdb9947d39ed0ddd6573ff86dbf.1554248002.git.khalid.aziz-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org> On Wed, Apr 03, 2019 at 11:34:05AM -0600, Khalid Aziz wrote: > diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h > index 2779ace16d23..5c0e1581fa56 100644 > --- a/arch/x86/include/asm/pgtable.h > +++ b/arch/x86/include/asm/pgtable.h > @@ -1437,6 +1437,32 @@ static inline bool arch_has_pfn_modify_check(void) > return boot_cpu_has_bug(X86_BUG_L1TF); > } > > +/* > + * The current flushing context - we pass it instead of 5 arguments: > + */ > +struct cpa_data { > + unsigned long *vaddr; > + pgd_t *pgd; > + pgprot_t mask_set; > + pgprot_t mask_clr; > + unsigned long numpages; > + unsigned long curpage; > + unsigned long pfn; > + unsigned int flags; > + unsigned int force_split : 1, > + force_static_prot : 1; > + struct page **pages; > +}; > + > + > +int > +should_split_large_page(pte_t *kpte, unsigned long address, > + struct cpa_data *cpa); > +extern spinlock_t cpa_lock; > +int > +__split_large_page(struct cpa_data *cpa, pte_t *kpte, unsigned long address, > + struct page *base); > + I really hate exposing all that. > #include <asm-generic/pgtable.h> > #endif /* __ASSEMBLY__ */ > > diff --git a/arch/x86/mm/xpfo.c b/arch/x86/mm/xpfo.c > new file mode 100644 > index 000000000000..3045bb7e4659 > --- /dev/null > +++ b/arch/x86/mm/xpfo.c > @@ -0,0 +1,123 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (C) 2017 Hewlett Packard Enterprise Development, L.P. > + * Copyright (C) 2016 Brown University. All rights reserved. > + * > + * Authors: > + * Juerg Haefliger <juerg.haefliger-ZPxbGqLxI0U@public.gmane.org> > + * Vasileios P. Kemerlis <vpk-9N4TdPD67tT2fBVCVOL8/A@public.gmane.org> > + * > + * This program is free software; you can redistribute it and/or modify it > + * under the terms of the GNU General Public License version 2 as published by > + * the Free Software Foundation. > + */ > + > +#include <linux/mm.h> > + > +#include <asm/tlbflush.h> > + > +extern spinlock_t cpa_lock; > + > +/* Update a single kernel page table entry */ > +inline void set_kpte(void *kaddr, struct page *page, pgprot_t prot) > +{ > + unsigned int level; > + pgprot_t msk_clr; > + pte_t *pte = lookup_address((unsigned long)kaddr, &level); > + > + if (unlikely(!pte)) { > + WARN(1, "xpfo: invalid address %p\n", kaddr); > + return; > + } > + > + switch (level) { > + case PG_LEVEL_4K: > + set_pte_atomic(pte, pfn_pte(page_to_pfn(page), > + canon_pgprot(prot))); (sorry, do we also need a nikon_pgprot() ? :-) > + break; > + case PG_LEVEL_2M: > + case PG_LEVEL_1G: { > + struct cpa_data cpa = { }; > + int do_split; > + > + if (level == PG_LEVEL_2M) > + msk_clr = pmd_pgprot(*(pmd_t *)pte); > + else > + msk_clr = pud_pgprot(*(pud_t *)pte); > + > + cpa.vaddr = kaddr; > + cpa.pages = &page; > + cpa.mask_set = prot; > + cpa.mask_clr = msk_clr; > + cpa.numpages = 1; > + cpa.flags = 0; > + cpa.curpage = 0; > + cpa.force_split = 0; > + > + > + do_split = should_split_large_page(pte, (unsigned long)kaddr, > + &cpa); > + if (do_split) { > + struct page *base; > + > + base = alloc_pages(GFP_ATOMIC, 0); > + if (!base) { > + WARN(1, "xpfo: failed to split large page\n"); You have to be fcking kidding right? A WARN when a GFP_ATOMIC allocation fails?! > + break; > + } > + > + if (!debug_pagealloc_enabled()) > + spin_lock(&cpa_lock); > + if (__split_large_page(&cpa, pte, (unsigned long)kaddr, > + base) < 0) { > + __free_page(base); > + WARN(1, "xpfo: failed to split large page\n"); > + } > + if (!debug_pagealloc_enabled()) > + spin_unlock(&cpa_lock); > + } > + > + break; Ever heard of helper functions? > + } > + case PG_LEVEL_512G: > + /* fallthrough, splitting infrastructure doesn't > + * support 512G pages. > + */ Broken coment style. > + default: > + WARN(1, "xpfo: unsupported page level %x\n", level); > + } > + > +} > +EXPORT_SYMBOL_GPL(set_kpte); > + > +inline void xpfo_flush_kernel_tlb(struct page *page, int order) > +{ > + int level; > + unsigned long size, kaddr; > + > + kaddr = (unsigned long)page_address(page); > + > + if (unlikely(!lookup_address(kaddr, &level))) { > + WARN(1, "xpfo: invalid address to flush %lx %d\n", kaddr, > + level); > + return; > + } > + > + switch (level) { > + case PG_LEVEL_4K: > + size = PAGE_SIZE; > + break; > + case PG_LEVEL_2M: > + size = PMD_SIZE; > + break; > + case PG_LEVEL_1G: > + size = PUD_SIZE; > + break; > + default: > + WARN(1, "xpfo: unsupported page level %x\n", level); > + return; > + } > + > + flush_tlb_kernel_range(kaddr, kaddr + (1 << order) * size); > +} You call this from IRQ/IRQ-disabled context... that _CANNOT_ be right.
next prev parent reply other threads:[~2019-04-04 7:52 UTC|newest] Thread overview: 202+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-04-03 17:34 [RFC PATCH v9 00/13] Add support for eXclusive Page Frame Ownership Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-03 17:34 ` [RFC PATCH v9 01/13] mm: add MAP_HUGETLB support to vm_mmap Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-03 17:34 ` [RFC PATCH v9 02/13] x86: always set IF before oopsing from page fault Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-04 0:12 ` Andy Lutomirski 2019-04-04 0:12 ` Andy Lutomirski 2019-04-04 1:42 ` Tycho Andersen 2019-04-04 1:42 ` Tycho Andersen 2019-04-04 4:12 ` Andy Lutomirski 2019-04-04 4:12 ` Andy Lutomirski 2019-04-04 15:47 ` Tycho Andersen 2019-04-04 15:47 ` Tycho Andersen 2019-04-04 16:23 ` Sebastian Andrzej Siewior 2019-04-04 16:28 ` Thomas Gleixner 2019-04-04 16:28 ` Thomas Gleixner 2019-04-04 17:11 ` Andy Lutomirski 2019-04-04 17:11 ` Andy Lutomirski 2019-04-03 17:34 ` [RFC PATCH v9 03/13] mm: Add support for eXclusive Page Frame Ownership (XPFO) Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-04 7:21 ` Peter Zijlstra 2019-04-04 7:21 ` Peter Zijlstra 2019-04-04 9:25 ` Peter Zijlstra 2019-04-04 9:25 ` Peter Zijlstra 2019-04-04 14:48 ` Tycho Andersen 2019-04-04 14:48 ` Tycho Andersen 2019-04-04 7:43 ` Peter Zijlstra 2019-04-04 7:43 ` Peter Zijlstra 2019-04-04 15:15 ` Khalid Aziz 2019-04-04 15:15 ` Khalid Aziz 2019-04-04 17:01 ` Peter Zijlstra 2019-04-04 17:01 ` Peter Zijlstra 2019-04-17 16:15 ` Ingo Molnar 2019-04-17 16:15 ` Ingo Molnar 2019-04-17 16:15 ` Ingo Molnar 2019-04-17 16:15 ` Ingo Molnar 2019-04-17 16:49 ` Khalid Aziz 2019-04-17 16:49 ` Khalid Aziz 2019-04-17 16:49 ` Khalid Aziz 2019-04-17 16:49 ` Khalid Aziz 2019-04-17 17:09 ` Ingo Molnar 2019-04-17 17:09 ` Ingo Molnar 2019-04-17 17:09 ` Ingo Molnar 2019-04-17 17:09 ` Ingo Molnar 2019-04-17 17:19 ` Nadav Amit 2019-04-17 17:19 ` Nadav Amit 2019-04-17 17:19 ` Nadav Amit 2019-04-17 17:19 ` Nadav Amit 2019-04-17 17:26 ` Ingo Molnar 2019-04-17 17:26 ` Ingo Molnar 2019-04-17 17:26 ` Ingo Molnar 2019-04-17 17:26 ` Ingo Molnar 2019-04-17 17:44 ` Nadav Amit 2019-04-17 17:44 ` Nadav Amit 2019-04-17 17:44 ` Nadav Amit 2019-04-17 17:44 ` Nadav Amit 2019-04-17 21:19 ` Thomas Gleixner 2019-04-17 21:19 ` Thomas Gleixner 2019-04-17 21:19 ` Thomas Gleixner 2019-04-17 21:19 ` Thomas Gleixner 2019-04-17 21:19 ` Thomas Gleixner 2019-04-17 23:18 ` Linus Torvalds 2019-04-17 23:18 ` Linus Torvalds 2019-04-17 23:18 ` Linus Torvalds 2019-04-17 23:42 ` Thomas Gleixner 2019-04-17 23:42 ` Thomas Gleixner 2019-04-17 23:42 ` Thomas Gleixner 2019-04-17 23:42 ` Thomas Gleixner 2019-04-17 23:42 ` Thomas Gleixner 2019-04-17 23:52 ` Linus Torvalds 2019-04-17 23:52 ` Linus Torvalds 2019-04-17 23:52 ` Linus Torvalds 2019-04-17 23:52 ` Linus Torvalds 2019-04-17 23:52 ` Linus Torvalds 2019-04-18 4:41 ` Andy Lutomirski 2019-04-18 4:41 ` Andy Lutomirski 2019-04-18 4:41 ` Andy Lutomirski 2019-04-18 4:41 ` Andy Lutomirski 2019-04-18 4:41 ` Andy Lutomirski 2019-04-18 5:41 ` Kees Cook 2019-04-18 5:41 ` Kees Cook 2019-04-18 5:41 ` Kees Cook via iommu 2019-04-18 5:41 ` Kees Cook 2019-04-18 5:41 ` Kees Cook 2019-04-18 14:34 ` Khalid Aziz 2019-04-18 14:34 ` Khalid Aziz 2019-04-18 14:34 ` Khalid Aziz 2019-04-18 14:34 ` Khalid Aziz 2019-04-22 19:30 ` Khalid Aziz 2019-04-22 19:30 ` Khalid Aziz 2019-04-22 19:30 ` Khalid Aziz 2019-04-22 19:30 ` Khalid Aziz 2019-04-22 22:23 ` Kees Cook 2019-04-22 22:23 ` Kees Cook 2019-04-22 22:23 ` Kees Cook via iommu 2019-04-22 22:23 ` Kees Cook via iommu 2019-04-22 22:23 ` Kees Cook 2019-04-18 6:14 ` Thomas Gleixner 2019-04-18 6:14 ` Thomas Gleixner 2019-04-18 6:14 ` Thomas Gleixner 2019-04-18 6:14 ` Thomas Gleixner 2019-04-18 6:14 ` Thomas Gleixner 2019-04-17 17:33 ` Khalid Aziz 2019-04-17 17:33 ` Khalid Aziz 2019-04-17 17:33 ` Khalid Aziz 2019-04-17 17:33 ` Khalid Aziz 2019-04-17 19:49 ` Andy Lutomirski 2019-04-17 19:49 ` Andy Lutomirski 2019-04-17 19:49 ` Andy Lutomirski 2019-04-17 19:49 ` Andy Lutomirski 2019-04-17 19:49 ` Andy Lutomirski 2019-04-17 19:52 ` Tycho Andersen 2019-04-17 19:52 ` Tycho Andersen 2019-04-17 19:52 ` Tycho Andersen 2019-04-17 19:52 ` Tycho Andersen 2019-04-17 20:12 ` Khalid Aziz 2019-04-17 20:12 ` Khalid Aziz 2019-04-17 20:12 ` Khalid Aziz 2019-04-17 20:12 ` Khalid Aziz 2019-05-01 14:49 ` Waiman Long 2019-05-01 14:49 ` Waiman Long 2019-05-01 14:49 ` Waiman Long 2019-05-01 14:49 ` Waiman Long 2019-05-01 15:18 ` Khalid Aziz 2019-05-01 15:18 ` Khalid Aziz 2019-05-01 15:18 ` Khalid Aziz 2019-05-01 15:18 ` Khalid Aziz 2019-04-03 17:34 ` [RFC PATCH v9 04/13] xpfo, x86: Add support for XPFO for x86-64 Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-04 7:52 ` Peter Zijlstra [this message] 2019-04-04 7:52 ` Peter Zijlstra 2019-04-04 15:40 ` Khalid Aziz 2019-04-04 15:40 ` Khalid Aziz 2019-04-03 17:34 ` [RFC PATCH v9 05/13] mm: add a user_virt_to_phys symbol Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-03 17:34 ` [RFC PATCH v9 06/13] lkdtm: Add test for XPFO Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-03 17:34 ` [RFC PATCH v9 07/13] arm64/mm: Add support " Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-03 17:34 ` [RFC PATCH v9 08/13] swiotlb: Map the buffer if it was unmapped by XPFO Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-03 17:34 ` [RFC PATCH v9 09/13] xpfo: add primitives for mapping underlying memory Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-03 17:34 ` [RFC PATCH v9 10/13] arm64/mm, xpfo: temporarily map dcache regions Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-03 17:34 ` [RFC PATCH v9 11/13] xpfo, mm: optimize spinlock usage in xpfo_kunmap Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-04 7:56 ` Peter Zijlstra 2019-04-04 7:56 ` Peter Zijlstra 2019-04-04 16:06 ` Khalid Aziz 2019-04-04 16:06 ` Khalid Aziz 2019-04-03 17:34 ` [RFC PATCH v9 12/13] xpfo, mm: Defer TLB flushes for non-current CPUs (x86 only) Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-04 4:10 ` Andy Lutomirski 2019-04-04 4:10 ` Andy Lutomirski [not found] ` <CALCETrXMXxnWqN94d83UvGWhkD1BNWiwvH2vsUth1w0T3=0ywQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2019-04-04 22:55 ` Khalid Aziz 2019-04-05 7:17 ` Thomas Gleixner 2019-04-05 7:17 ` Thomas Gleixner 2019-04-05 14:44 ` Dave Hansen 2019-04-05 14:44 ` Dave Hansen 2019-04-05 15:24 ` Andy Lutomirski 2019-04-05 15:24 ` Andy Lutomirski 2019-04-05 15:24 ` Andy Lutomirski 2019-04-05 15:56 ` Tycho Andersen 2019-04-05 15:56 ` Tycho Andersen 2019-04-05 15:56 ` Tycho Andersen 2019-04-05 16:32 ` Andy Lutomirski 2019-04-05 16:32 ` Andy Lutomirski 2019-04-05 16:32 ` Andy Lutomirski 2019-04-05 15:56 ` Khalid Aziz 2019-04-05 15:56 ` Khalid Aziz 2019-04-05 15:56 ` Khalid Aziz 2019-04-05 16:01 ` Dave Hansen 2019-04-05 16:01 ` Dave Hansen 2019-04-05 16:01 ` Dave Hansen 2019-04-05 16:27 ` Andy Lutomirski 2019-04-05 16:27 ` Andy Lutomirski 2019-04-05 16:27 ` Andy Lutomirski 2019-04-05 16:41 ` Peter Zijlstra 2019-04-05 16:41 ` Peter Zijlstra 2019-04-05 16:41 ` Peter Zijlstra 2019-04-05 17:35 ` Khalid Aziz 2019-04-05 17:35 ` Khalid Aziz 2019-04-05 17:35 ` Khalid Aziz 2019-04-05 15:44 ` Khalid Aziz 2019-04-05 15:44 ` Khalid Aziz 2019-04-05 15:44 ` Khalid Aziz 2019-04-05 15:24 ` Andy Lutomirski 2019-04-05 15:24 ` Andy Lutomirski 2019-04-05 15:24 ` Andy Lutomirski 2019-04-04 8:18 ` Peter Zijlstra 2019-04-04 8:18 ` Peter Zijlstra 2019-04-03 17:34 ` [RFC PATCH v9 13/13] xpfo, mm: Optimize XPFO TLB flushes by batching them together Khalid Aziz 2019-04-03 17:34 ` Khalid Aziz 2019-04-04 16:44 ` [RFC PATCH v9 00/13] Add support for eXclusive Page Frame Ownership Nadav Amit 2019-04-04 16:44 ` Nadav Amit 2019-04-04 17:18 ` Khalid Aziz 2019-04-04 17:18 ` Khalid Aziz 2019-04-06 6:40 ` Jon Masters 2019-04-06 6:40 ` Jon Masters 2019-04-06 6:40 ` Jon Masters
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