From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D2E2413B59E for ; Wed, 4 Sep 2024 20:07:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725480467; cv=none; b=tXkP+jzivlORPUUPLG7qOOavATt8rOybdBXTlc06zmvbIOwltAWKMtVCvK0r+uwXk4gw+f/CIegk+z5gVO6F+V9bAF9+fQIc/+sJO1CIR0gUgjoY9Ko98tRjAyFGeCHHrwPy0PQ9PqfOmbcCG6DunUnCN1RbaVN+xZQWq1LKNYA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725480467; c=relaxed/simple; bh=TUWWt2aNB4UOUbbkdyvyVmCcF2S/afMZkYrqhD4mo4g=; h=Date:To:From:Subject:Message-Id; b=jM+wpaoGfiShugh3qZZlUK/aWVS7zkDQoZ20mZKVLQ0+MHb6hKSFKG8f3L3xsB4qSvYCBOxxKCK6EB+FRD3GK7upDfmCnMLTAlMb17K+9QcwwUFEPyDJt3oxtCXPwnTNvQRePYYKbMkPo48f0MmcXsW95hrkBu/23V3TJnB2rAM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=VA2zmlQv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="VA2zmlQv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3855DC4CEC2; Wed, 4 Sep 2024 20:07:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1725480467; bh=TUWWt2aNB4UOUbbkdyvyVmCcF2S/afMZkYrqhD4mo4g=; h=Date:To:From:Subject:From; b=VA2zmlQvFJbTN/qig4y5t7lw9GYN1X8q6C1wrriSzrUEcZTu6rPKsLjEYFXD6Bcix Hz1nEhRDy4giQpg8xLmHRcXdOPaRGWgqVOKNAmeOJjr9OOroQkImLg+kwsX01QlMja +rwmD6sluo/10g2YLVugqWoRV2esHcqw9edKXApg= Date: Wed, 04 Sep 2024 13:07:46 -0700 To: mm-commits@vger.kernel.org,ysato@users.sourceforge.jp,vgupta@kernel.org,vbabka@suse.cz,tsbogend@alpha.franken.de,tglx@linutronix.de,svens@linux.ibm.com,rick.p.edgecombe@intel.com,richard.henderson@linaro.org,npiggin@gmail.com,naveen@kernel.org,mpe@ellerman.id.au,mingo@redhat.com,mattst88@gmail.com,lorenzo.stoakes@oracle.com,linux@armlinux.org.uk,Liam.Howlett@Oracle.com,kernel@xen0n.name,jcmvbkbc@gmail.com,James.Bottomley@HansenPartnership.com,ink@jurassic.park.msu.ru,hpa@zytor.com,hca@linux.ibm.com,guoren@kernel.org,gor@linux.ibm.com,glaubitz@physik.fu-berlin.de,gerald.schaefer@linux.ibm.com,deller@gmx.de,davem@davemloft.net,dave.hansen@linux.intel.com,dalias@libc.org,chris@zankel.net,christophe.leroy@csgroup.eu,chenhuacai@kernel.org,bp@alien8.de,borntraeger@linux.ibm.com,andreas@gaisler.com,agordeev@linux.ibm.com,broonie@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-pass-vm_flags-to-generic_get_unmapped_area.patch added to mm-unstable branch Message-Id: <20240904200747.3855DC4CEC2@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm: pass vm_flags to generic_get_unmapped_area() has been added to the -mm mm-unstable branch. Its filename is mm-pass-vm_flags-to-generic_get_unmapped_area.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-pass-vm_flags-to-generic_get_unmapped_area.patch This patch will later appear in the mm-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 the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Mark Brown Subject: mm: pass vm_flags to generic_get_unmapped_area() Date: Wed, 04 Sep 2024 17:58:00 +0100 In preparation for using vm_flags to ensure guard pages for shadow stacks supply them as an argument to generic_get_unmapped_area(). The only user outside of the core code is the PowerPC book3s64 implementation which is trivially wrapping the generic implementation in the radix_enabled() case. No functional changes. Link: https://lkml.kernel.org/r/20240904-mm-generic-shadow-stack-guard-v2-2-a46b8b6dc0ed@kernel.org Signed-off-by: Mark Brown Acked-by: Lorenzo Stoakes Reviewed-by: Liam R. Howlett Acked-by: Michael Ellerman Cc: Alexander Gordeev Cc: Andreas Larsson Cc: Borislav Petkov Cc: Christian Borntraeger Cc: Christophe Leroy Cc: Chris Zankel Cc: Dave Hansen Cc: David S. Miller Cc: "Edgecombe, Rick P" Cc: Gerald Schaefer Cc: Guo Ren Cc: Heiko Carstens Cc: Helge Deller Cc: "H. Peter Anvin" Cc: Huacai Chen Cc: Ingo Molnar Cc: Ivan Kokshaysky Cc: James Bottomley Cc: John Paul Adrian Glaubitz Cc: Matt Turner Cc: Max Filippov Cc: Naveen N Rao Cc: Nicholas Piggin Cc: Richard Henderson Cc: Rich Felker Cc: Russell King Cc: Sven Schnelle Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Vasily Gorbik Cc: Vineet Gupta Cc: Vlastimil Babka Cc: WANG Xuerui Cc: Yoshinori Sato Signed-off-by: Andrew Morton --- arch/powerpc/mm/book3s64/slice.c | 4 ++-- include/linux/sched/mm.h | 4 ++-- mm/mmap.c | 10 ++++++---- 3 files changed, 10 insertions(+), 8 deletions(-) --- a/arch/powerpc/mm/book3s64/slice.c~mm-pass-vm_flags-to-generic_get_unmapped_area +++ a/arch/powerpc/mm/book3s64/slice.c @@ -641,7 +641,7 @@ unsigned long arch_get_unmapped_area(str vm_flags_t vm_flags) { if (radix_enabled()) - return generic_get_unmapped_area(filp, addr, len, pgoff, flags); + return generic_get_unmapped_area(filp, addr, len, pgoff, flags, vm_flags); return slice_get_unmapped_area(addr, len, flags, mm_ctx_user_psize(¤t->mm->context), 0); @@ -655,7 +655,7 @@ unsigned long arch_get_unmapped_area_top vm_flags_t vm_flags) { if (radix_enabled()) - return generic_get_unmapped_area_topdown(filp, addr0, len, pgoff, flags); + return generic_get_unmapped_area_topdown(filp, addr0, len, pgoff, flags, vm_flags); return slice_get_unmapped_area(addr0, len, flags, mm_ctx_user_psize(¤t->mm->context), 1); --- a/include/linux/sched/mm.h~mm-pass-vm_flags-to-generic_get_unmapped_area +++ a/include/linux/sched/mm.h @@ -204,11 +204,11 @@ unsigned long mm_get_unmapped_area_vmfla unsigned long generic_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, - unsigned long flags); + unsigned long flags, vm_flags_t vm_flags); unsigned long generic_get_unmapped_area_topdown(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, - unsigned long flags); + unsigned long flags, vm_flags_t vm_flags); #else static inline void arch_pick_mmap_layout(struct mm_struct *mm, struct rlimit *rlim_stack) {} --- a/mm/mmap.c~mm-pass-vm_flags-to-generic_get_unmapped_area +++ a/mm/mmap.c @@ -738,7 +738,7 @@ unsigned long vm_unmapped_area(struct vm unsigned long generic_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, - unsigned long flags) + unsigned long flags, vm_flags_t vm_flags) { struct mm_struct *mm = current->mm; struct vm_area_struct *vma, *prev; @@ -772,7 +772,8 @@ arch_get_unmapped_area(struct file *filp unsigned long len, unsigned long pgoff, unsigned long flags, vm_flags_t vm_flags) { - return generic_get_unmapped_area(filp, addr, len, pgoff, flags); + return generic_get_unmapped_area(filp, addr, len, pgoff, flags, + vm_flags); } #endif @@ -783,7 +784,7 @@ arch_get_unmapped_area(struct file *filp unsigned long generic_get_unmapped_area_topdown(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, - unsigned long flags) + unsigned long flags, vm_flags_t vm_flags) { struct vm_area_struct *vma, *prev; struct mm_struct *mm = current->mm; @@ -836,7 +837,8 @@ arch_get_unmapped_area_topdown(struct fi unsigned long len, unsigned long pgoff, unsigned long flags, vm_flags_t vm_flags) { - return generic_get_unmapped_area_topdown(filp, addr, len, pgoff, flags); + return generic_get_unmapped_area_topdown(filp, addr, len, pgoff, flags, + vm_flags); } #endif _ Patches currently in -mm which might be from broonie@kernel.org are mm-make-arch_get_unmapped_area-take-vm_flags-by-default.patch mm-pass-vm_flags-to-generic_get_unmapped_area.patch mm-care-about-shadow-stack-guard-gap-when-getting-an-unmapped-area.patch