From: Charlie Jenkins <charlie@rivosinc.com>
To: Arnd Bergmann <arnd@arndb.de>,
Richard Henderson <richard.henderson@linaro.org>,
Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
Matt Turner <mattst88@gmail.com>,
Vineet Gupta <vgupta@kernel.org>,
Russell King <linux@armlinux.org.uk>,
Guo Ren <guoren@kernel.org>, Huacai Chen <chenhuacai@kernel.org>,
WANG Xuerui <kernel@xen0n.name>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Helge Deller <deller@gmx.de>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Naveen N Rao <naveen@kernel.org>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Rich Felker <dalias@libc.org>,
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
"David S. Miller" <davem@davemloft.net>,
Andreas Larsson <andreas@gaisler.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Muchun Song <muchun.song@linux.dev>,
Andrew Morton <akpm@linux-foundation.org>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Shuah Khan <shuah@kernel.org>
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-alpha@vger.kernel.org, linux-snps-arc@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-csky@vger.kernel.org, loongarch@lists.linux.dev,
linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org,
linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
Charlie Jenkins <charlie@rivosinc.com>
Subject: [PATCH RFC v2 2/4] mm: Add hint and mmap_flags to struct vm_unmapped_area_info
Date: Thu, 29 Aug 2024 00:15:59 -0700 [thread overview]
Message-ID: <20240829-patches-below_hint_mmap-v2-2-638a28d9eae0@rivosinc.com> (raw)
In-Reply-To: <20240829-patches-below_hint_mmap-v2-0-638a28d9eae0@rivosinc.com>
The hint address and mmap_flags are necessary to determine if
MAP_BELOW_HINT requirements are satisfied.
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
---
arch/alpha/kernel/osf_sys.c | 2 ++
arch/arc/mm/mmap.c | 3 +++
arch/arm/mm/mmap.c | 7 +++++++
arch/csky/abiv1/mmap.c | 3 +++
arch/loongarch/mm/mmap.c | 3 +++
arch/mips/mm/mmap.c | 3 +++
arch/parisc/kernel/sys_parisc.c | 3 +++
arch/powerpc/mm/book3s64/slice.c | 7 +++++++
arch/s390/mm/hugetlbpage.c | 4 ++++
arch/s390/mm/mmap.c | 6 ++++++
arch/sh/mm/mmap.c | 6 ++++++
arch/sparc/kernel/sys_sparc_32.c | 3 +++
arch/sparc/kernel/sys_sparc_64.c | 6 ++++++
arch/sparc/mm/hugetlbpage.c | 4 ++++
arch/x86/kernel/sys_x86_64.c | 6 ++++++
arch/x86/mm/hugetlbpage.c | 4 ++++
fs/hugetlbfs/inode.c | 4 ++++
include/linux/mm.h | 2 ++
mm/mmap.c | 6 ++++++
19 files changed, 82 insertions(+)
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index e5f881bc8288..6903700afd12 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -1223,6 +1223,8 @@ arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
info.length = len;
info.low_limit = addr;
info.high_limit = limit;
+ info.hint = addr;
+ info.mmap_flags = flags;
return vm_unmapped_area(&info);
}
diff --git a/arch/arc/mm/mmap.c b/arch/arc/mm/mmap.c
index 69a915297155..5922cb51e029 100644
--- a/arch/arc/mm/mmap.c
+++ b/arch/arc/mm/mmap.c
@@ -29,6 +29,9 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
struct vm_area_struct *vma;
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
/*
* We enforce the MAP_FIXED case.
*/
diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c
index d65d0e6ed10a..04d9234f049a 100644
--- a/arch/arm/mm/mmap.c
+++ b/arch/arm/mm/mmap.c
@@ -36,6 +36,9 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
int aliasing = cache_is_vipt_aliasing();
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
/*
* We only need to do colour alignment if either the I or D
* caches alias.
@@ -56,6 +59,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
if (len > TASK_SIZE)
return -ENOMEM;
+
if (addr) {
if (do_align)
addr = COLOUR_ALIGN(addr, pgoff);
@@ -88,6 +92,9 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
int aliasing = cache_is_vipt_aliasing();
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
/*
* We only need to do colour alignment if either the I or D
* caches alias.
diff --git a/arch/csky/abiv1/mmap.c b/arch/csky/abiv1/mmap.c
index 7f826331d409..0be4913c6cf3 100644
--- a/arch/csky/abiv1/mmap.c
+++ b/arch/csky/abiv1/mmap.c
@@ -35,6 +35,9 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
.align_offset = pgoff << PAGE_SHIFT
};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
/*
* We only need to do colour alignment if either the I or D
* caches alias.
diff --git a/arch/loongarch/mm/mmap.c b/arch/loongarch/mm/mmap.c
index 889030985135..7d1e8be20519 100644
--- a/arch/loongarch/mm/mmap.c
+++ b/arch/loongarch/mm/mmap.c
@@ -27,6 +27,9 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
int do_color_align;
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
if (unlikely(len > TASK_SIZE))
return -ENOMEM;
diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c
index 7e11d7b58761..22e8f9c8eaa0 100644
--- a/arch/mips/mm/mmap.c
+++ b/arch/mips/mm/mmap.c
@@ -36,6 +36,9 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
int do_color_align;
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
if (unlikely(len > TASK_SIZE))
return -ENOMEM;
diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index f7722451276e..2ac53f148624 100644
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -108,6 +108,9 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
.length = len
};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
if (unlikely(len > TASK_SIZE))
return -ENOMEM;
diff --git a/arch/powerpc/mm/book3s64/slice.c b/arch/powerpc/mm/book3s64/slice.c
index ef3ce37f1bb3..f0e2550af6d0 100644
--- a/arch/powerpc/mm/book3s64/slice.c
+++ b/arch/powerpc/mm/book3s64/slice.c
@@ -286,6 +286,10 @@ static unsigned long slice_find_area_bottomup(struct mm_struct *mm,
.length = len,
.align_mask = PAGE_MASK & ((1ul << pshift) - 1),
};
+
+ info.hint = addr;
+ info.mmap_flags = flags;
+
/*
* Check till the allow max value for this mmap request
*/
@@ -331,6 +335,9 @@ static unsigned long slice_find_area_topdown(struct mm_struct *mm,
};
unsigned long min_addr = max(PAGE_SIZE, mmap_min_addr);
+ info.hint = addr;
+ info.mmap_flags = flags;
+
/*
* If we are trying to allocate above DEFAULT_MAP_WINDOW
* Add the different to the mmap_base.
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index ded0eff58a19..dc38f7022037 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -254,6 +254,8 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file,
info.low_limit = current->mm->mmap_base;
info.high_limit = TASK_SIZE;
info.align_mask = PAGE_MASK & ~huge_page_mask(h);
+ info.hint = addr;
+ info.mmap_flags = flags;
return vm_unmapped_area(&info);
}
@@ -270,6 +272,8 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
info.low_limit = PAGE_SIZE;
info.high_limit = current->mm->mmap_base;
info.align_mask = PAGE_MASK & ~huge_page_mask(h);
+ info.hint = addr;
+ info.mmap_flags = flags;
addr = vm_unmapped_area(&info);
/*
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index 206756946589..001345df61b6 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -88,6 +88,9 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
struct vm_area_struct *vma;
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
if (len > TASK_SIZE - mmap_min_addr)
return -ENOMEM;
@@ -123,6 +126,9 @@ unsigned long arch_get_unmapped_area_topdown(struct file *filp, unsigned long ad
struct mm_struct *mm = current->mm;
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
/* requested length too big for entire address space */
if (len > TASK_SIZE - mmap_min_addr)
return -ENOMEM;
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
index bee329d4149a..ab1f5613b5e2 100644
--- a/arch/sh/mm/mmap.c
+++ b/arch/sh/mm/mmap.c
@@ -59,6 +59,9 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
int do_colour_align;
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
if (flags & MAP_FIXED) {
/* We do not accept a shared mapping if it would violate
* cache aliasing constraints.
@@ -107,6 +110,9 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
int do_colour_align;
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
if (flags & MAP_FIXED) {
/* We do not accept a shared mapping if it would violate
* cache aliasing constraints.
diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c
index 08a19727795c..bcc3242e003d 100644
--- a/arch/sparc/kernel/sys_sparc_32.c
+++ b/arch/sparc/kernel/sys_sparc_32.c
@@ -43,6 +43,9 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
{
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
if (flags & MAP_FIXED) {
/* We do not accept a shared mapping if it would violate
* cache aliasing constraints.
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index d9c3b34ca744..05de444d66f6 100644
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -95,6 +95,9 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
int do_color_align;
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
if (flags & MAP_FIXED) {
/* We do not accept a shared mapping if it would violate
* cache aliasing constraints.
@@ -155,6 +158,9 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
int do_color_align;
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
/* This should only ever run for 32-bit processes. */
BUG_ON(!test_thread_flag(TIF_32BIT));
diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
index cc91ca7a1e18..148064142628 100644
--- a/arch/sparc/mm/hugetlbpage.c
+++ b/arch/sparc/mm/hugetlbpage.c
@@ -40,6 +40,8 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *filp,
info.low_limit = TASK_UNMAPPED_BASE;
info.high_limit = min(task_size, VA_EXCLUDE_START);
info.align_mask = PAGE_MASK & ~huge_page_mask(h);
+ info.hint = addr;
+ info.mmap_flags = flags;
addr = vm_unmapped_area(&info);
if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) {
@@ -71,6 +73,8 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
info.low_limit = PAGE_SIZE;
info.high_limit = mm->mmap_base;
info.align_mask = PAGE_MASK & ~huge_page_mask(h);
+ info.hint = addr;
+ info.mmap_flags = flags;
addr = vm_unmapped_area(&info);
/*
diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c
index 01d7cd85ef97..248a210c2b0b 100644
--- a/arch/x86/kernel/sys_x86_64.c
+++ b/arch/x86/kernel/sys_x86_64.c
@@ -129,6 +129,9 @@ arch_get_unmapped_area_vmflags(struct file *filp, unsigned long addr, unsigned l
struct vm_unmapped_area_info info = {};
unsigned long begin, end;
+ info.hint = addr;
+ info.mmap_flags = flags;
+
if (flags & MAP_FIXED)
return addr;
@@ -167,6 +170,9 @@ arch_get_unmapped_area_topdown_vmflags(struct file *filp, unsigned long addr0,
unsigned long addr = addr0;
struct vm_unmapped_area_info info = {};
+ info.hint = addr;
+ info.mmap_flags = flags;
+
/* requested length too big for entire address space */
if (len > TASK_SIZE)
return -ENOMEM;
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index 807a5859a3c4..d3f8cec4895d 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -29,6 +29,8 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file,
info.length = len;
info.low_limit = get_mmap_base(1);
+ info.hint = addr;
+ info.mmap_flags = flags;
/*
* If hint address is above DEFAULT_MAP_WINDOW, look for unmapped area
@@ -52,6 +54,8 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
info.length = len;
info.low_limit = PAGE_SIZE;
info.high_limit = get_mmap_base(0);
+ info.hint = addr;
+ info.mmap_flags = flags;
/*
* If hint address is above DEFAULT_MAP_WINDOW, look for unmapped area
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 9f6cff356796..4b35eadd2ad8 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -182,6 +182,8 @@ hugetlb_get_unmapped_area_bottomup(struct file *file, unsigned long addr,
info.low_limit = current->mm->mmap_base;
info.high_limit = arch_get_mmap_end(addr, len, flags);
info.align_mask = PAGE_MASK & ~huge_page_mask(h);
+ info.hint = addr;
+ info.mmap_flags = flags;
return vm_unmapped_area(&info);
}
@@ -197,6 +199,8 @@ hugetlb_get_unmapped_area_topdown(struct file *file, unsigned long addr,
info.low_limit = PAGE_SIZE;
info.high_limit = arch_get_mmap_base(addr, current->mm->mmap_base);
info.align_mask = PAGE_MASK & ~huge_page_mask(h);
+ info.hint = addr;
+ info.mmap_flags = flags;
addr = vm_unmapped_area(&info);
/*
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 6549d0979b28..b5fcb9dfb942 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3445,6 +3445,8 @@ struct vm_unmapped_area_info {
unsigned long align_mask;
unsigned long align_offset;
unsigned long start_gap;
+ unsigned long hint;
+ unsigned long mmap_flags;
};
extern unsigned long vm_unmapped_area(struct vm_unmapped_area_info *info);
diff --git a/mm/mmap.c b/mm/mmap.c
index d0dfc85b209b..34ba0db23678 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1796,6 +1796,9 @@ generic_get_unmapped_area(struct file *filp, unsigned long addr,
struct vm_unmapped_area_info info = {};
const unsigned long mmap_end = arch_get_mmap_end(addr, len, flags);
+ info.hint = addr;
+ info.mmap_flags = flags;
+
if (len > mmap_end - mmap_min_addr)
return -ENOMEM;
@@ -1841,6 +1844,9 @@ generic_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
struct vm_unmapped_area_info info = {};
const unsigned long mmap_end = arch_get_mmap_end(addr, len, flags);
+ info.hint = addr;
+ info.mmap_flags = flags;
+
/* requested length too big for entire address space */
if (len > mmap_end - mmap_min_addr)
return -ENOMEM;
--
2.45.0
next prev parent reply other threads:[~2024-08-29 7:16 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-29 7:15 [PATCH RFC v2 0/4] mm: Introduce MAP_BELOW_HINT Charlie Jenkins
2024-08-29 7:15 ` [PATCH RFC v2 1/4] mm: Add MAP_BELOW_HINT Charlie Jenkins
2024-08-29 8:26 ` Michael Ellerman
2024-08-30 1:16 ` Charlie Jenkins
2024-08-29 7:15 ` Charlie Jenkins [this message]
2024-08-29 8:48 ` [PATCH RFC v2 2/4] mm: Add hint and mmap_flags to struct vm_unmapped_area_info Lorenzo Stoakes
2024-08-30 1:11 ` Charlie Jenkins
2024-09-03 17:18 ` Christophe Leroy
2024-08-29 7:16 ` [PATCH RFC v2 3/4] mm: Support MAP_BELOW_HINT in vm_unmapped_area() Charlie Jenkins
2024-08-29 7:16 ` [PATCH RFC v2 4/4] selftests/mm: Create MAP_BELOW_HINT test Charlie Jenkins
2024-08-29 8:30 ` [PATCH RFC v2 0/4] mm: Introduce MAP_BELOW_HINT Michal Hocko
2024-08-29 17:33 ` Charlie Jenkins
2024-09-03 8:44 ` Michal Hocko
2024-08-29 8:42 ` Lorenzo Stoakes
2024-08-29 9:54 ` Lorenzo Stoakes
2024-08-29 22:16 ` Charlie Jenkins
2024-08-30 9:52 ` Lorenzo Stoakes
2024-08-31 1:45 ` Charlie Jenkins
2024-08-30 15:03 ` Dave Hansen
2024-08-30 15:18 ` Lorenzo Stoakes
2024-08-29 9:02 ` Vlastimil Babka
2024-08-29 17:00 ` Palmer Dabbelt
2024-09-05 6:47 ` Kirill A. Shutemov
2024-09-05 17:26 ` Charlie Jenkins
2024-09-09 9:46 ` Kirill A. Shutemov
2024-10-21 13:22 ` Steven Price
2024-10-21 19:48 ` Liam R. Howlett
2024-10-23 9:31 ` Steven Price
2024-10-23 18:10 ` Liam R. Howlett
2024-10-24 10:52 ` Steven Price
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