From: Will Deacon <will@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Will Deacon <will@kernel.org>, Joel Fernandes <joelaf@google.com>,
Sami Tolvanen <samitolvanen@google.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Kees Cook <keescook@chromium.org>, Marco Elver <elver@google.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
Matt Turner <mattst88@gmail.com>,
Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
Richard Henderson <rth@twiddle.net>,
Peter Zijlstra <peterz@infradead.org>,
Alan Stern <stern@rowland.harvard.edu>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
Boqun Feng <boqun.feng@gmail.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-alpha@vger.kernel.org,
virtualization@lists.linux-foundation.org,
kernel-team@android.com
Subject: [PATCH v3 06/19] asm/rwonce: Don't pull <asm/barrier.h> into 'asm-generic/rwonce.h'
Date: Fri, 10 Jul 2020 17:51:50 +0100 [thread overview]
Message-ID: <20200710165203.31284-7-will@kernel.org> (raw)
In-Reply-To: <20200710165203.31284-1-will@kernel.org>
Now that 'smp_read_barrier_depends()' has gone the way of the Norwegian
Blue, drop the inclusion of <asm/barrier.h> in 'asm-generic/rwonce.h'.
This requires fixups to some architecture vdso headers which were
previously relying on 'asm/barrier.h' coming in via 'linux/compiler.h'.
Signed-off-by: Will Deacon <will@kernel.org>
---
arch/arm/include/asm/vdso/gettimeofday.h | 1 +
arch/arm64/include/asm/vdso/compat_gettimeofday.h | 1 +
arch/arm64/include/asm/vdso/gettimeofday.h | 1 +
arch/riscv/include/asm/vdso/gettimeofday.h | 1 +
include/asm-generic/rwonce.h | 2 --
include/linux/nospec.h | 2 ++
6 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/arm/include/asm/vdso/gettimeofday.h b/arch/arm/include/asm/vdso/gettimeofday.h
index 36dc18553ed8..1b207cf07697 100644
--- a/arch/arm/include/asm/vdso/gettimeofday.h
+++ b/arch/arm/include/asm/vdso/gettimeofday.h
@@ -7,6 +7,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/errno.h>
#include <asm/unistd.h>
#include <asm/vdso/cp15.h>
diff --git a/arch/arm64/include/asm/vdso/compat_gettimeofday.h b/arch/arm64/include/asm/vdso/compat_gettimeofday.h
index b6907ae78e53..bcf7649999a4 100644
--- a/arch/arm64/include/asm/vdso/compat_gettimeofday.h
+++ b/arch/arm64/include/asm/vdso/compat_gettimeofday.h
@@ -7,6 +7,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/unistd.h>
#include <asm/errno.h>
diff --git a/arch/arm64/include/asm/vdso/gettimeofday.h b/arch/arm64/include/asm/vdso/gettimeofday.h
index afba6ba332f8..127fa63893e2 100644
--- a/arch/arm64/include/asm/vdso/gettimeofday.h
+++ b/arch/arm64/include/asm/vdso/gettimeofday.h
@@ -7,6 +7,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/unistd.h>
#define VDSO_HAS_CLOCK_GETRES 1
diff --git a/arch/riscv/include/asm/vdso/gettimeofday.h b/arch/riscv/include/asm/vdso/gettimeofday.h
index c8e818688ec1..3099362d9f26 100644
--- a/arch/riscv/include/asm/vdso/gettimeofday.h
+++ b/arch/riscv/include/asm/vdso/gettimeofday.h
@@ -4,6 +4,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/unistd.h>
#include <asm/csr.h>
#include <uapi/linux/time.h>
diff --git a/include/asm-generic/rwonce.h b/include/asm-generic/rwonce.h
index cc810f1f18ca..cd0302746fb4 100644
--- a/include/asm-generic/rwonce.h
+++ b/include/asm-generic/rwonce.h
@@ -26,8 +26,6 @@
#include <linux/kasan-checks.h>
#include <linux/kcsan-checks.h>
-#include <asm/barrier.h>
-
/*
* Use __READ_ONCE() instead of READ_ONCE() if you do not require any
* atomicity. Note that this may result in tears!
diff --git a/include/linux/nospec.h b/include/linux/nospec.h
index 0c5ef54fd416..c1e79f72cd89 100644
--- a/include/linux/nospec.h
+++ b/include/linux/nospec.h
@@ -5,6 +5,8 @@
#ifndef _LINUX_NOSPEC_H
#define _LINUX_NOSPEC_H
+
+#include <linux/compiler.h>
#include <asm/barrier.h>
struct task_struct;
--
2.27.0.383.g050319c2ae-goog
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Will Deacon <will@kernel.org>, Joel Fernandes <joelaf@google.com>,
Sami Tolvanen <samitolvanen@google.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Kees Cook <keescook@chromium.org>, Marco Elver <elver@google.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
Matt Turner <mattst88@gmail.com>,
Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
Richard Henderson <rth@twiddle.net>,
Peter Zijlstra <peterz@infradead.org>,
Alan Stern <stern@rowland.harvard.edu>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
Boqun Feng <boqun.feng@gmail.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-alpha@vger.kernel.org, virtualizati
Subject: [PATCH v3 06/19] asm/rwonce: Don't pull <asm/barrier.h> into 'asm-generic/rwonce.h'
Date: Fri, 10 Jul 2020 17:51:50 +0100 [thread overview]
Message-ID: <20200710165203.31284-7-will@kernel.org> (raw)
In-Reply-To: <20200710165203.31284-1-will@kernel.org>
Now that 'smp_read_barrier_depends()' has gone the way of the Norwegian
Blue, drop the inclusion of <asm/barrier.h> in 'asm-generic/rwonce.h'.
This requires fixups to some architecture vdso headers which were
previously relying on 'asm/barrier.h' coming in via 'linux/compiler.h'.
Signed-off-by: Will Deacon <will@kernel.org>
---
arch/arm/include/asm/vdso/gettimeofday.h | 1 +
arch/arm64/include/asm/vdso/compat_gettimeofday.h | 1 +
arch/arm64/include/asm/vdso/gettimeofday.h | 1 +
arch/riscv/include/asm/vdso/gettimeofday.h | 1 +
include/asm-generic/rwonce.h | 2 --
include/linux/nospec.h | 2 ++
6 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/arm/include/asm/vdso/gettimeofday.h b/arch/arm/include/asm/vdso/gettimeofday.h
index 36dc18553ed8..1b207cf07697 100644
--- a/arch/arm/include/asm/vdso/gettimeofday.h
+++ b/arch/arm/include/asm/vdso/gettimeofday.h
@@ -7,6 +7,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/errno.h>
#include <asm/unistd.h>
#include <asm/vdso/cp15.h>
diff --git a/arch/arm64/include/asm/vdso/compat_gettimeofday.h b/arch/arm64/include/asm/vdso/compat_gettimeofday.h
index b6907ae78e53..bcf7649999a4 100644
--- a/arch/arm64/include/asm/vdso/compat_gettimeofday.h
+++ b/arch/arm64/include/asm/vdso/compat_gettimeofday.h
@@ -7,6 +7,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/unistd.h>
#include <asm/errno.h>
diff --git a/arch/arm64/include/asm/vdso/gettimeofday.h b/arch/arm64/include/asm/vdso/gettimeofday.h
index afba6ba332f8..127fa63893e2 100644
--- a/arch/arm64/include/asm/vdso/gettimeofday.h
+++ b/arch/arm64/include/asm/vdso/gettimeofday.h
@@ -7,6 +7,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/unistd.h>
#define VDSO_HAS_CLOCK_GETRES 1
diff --git a/arch/riscv/include/asm/vdso/gettimeofday.h b/arch/riscv/include/asm/vdso/gettimeofday.h
index c8e818688ec1..3099362d9f26 100644
--- a/arch/riscv/include/asm/vdso/gettimeofday.h
+++ b/arch/riscv/include/asm/vdso/gettimeofday.h
@@ -4,6 +4,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/unistd.h>
#include <asm/csr.h>
#include <uapi/linux/time.h>
diff --git a/include/asm-generic/rwonce.h b/include/asm-generic/rwonce.h
index cc810f1f18ca..cd0302746fb4 100644
--- a/include/asm-generic/rwonce.h
+++ b/include/asm-generic/rwonce.h
@@ -26,8 +26,6 @@
#include <linux/kasan-checks.h>
#include <linux/kcsan-checks.h>
-#include <asm/barrier.h>
-
/*
* Use __READ_ONCE() instead of READ_ONCE() if you do not require any
* atomicity. Note that this may result in tears!
diff --git a/include/linux/nospec.h b/include/linux/nospec.h
index 0c5ef54fd416..c1e79f72cd89 100644
--- a/include/linux/nospec.h
+++ b/include/linux/nospec.h
@@ -5,6 +5,8 @@
#ifndef _LINUX_NOSPEC_H
#define _LINUX_NOSPEC_H
+
+#include <linux/compiler.h>
#include <asm/barrier.h>
struct task_struct;
--
2.27.0.383.g050319c2ae-goog
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Joel Fernandes <joelaf@google.com>,
Mark Rutland <mark.rutland@arm.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Jason Wang <jasowang@redhat.com>,
virtualization@lists.linux-foundation.org,
Will Deacon <will@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Alan Stern <stern@rowland.harvard.edu>,
Sami Tolvanen <samitolvanen@google.com>,
Matt Turner <mattst88@gmail.com>,
kernel-team@android.com, Marco Elver <elver@google.com>,
Kees Cook <keescook@chromium.org>,
"Paul E. McKenney" <paulmck@kernel.org>,
Boqun Feng <boqun.feng@gmail.com>,
Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
linux-arm-kernel@lists.infradead.org,
Richard Henderson <rth@twiddle.net>,
Nick Desaulniers <ndesaulniers@google.com>,
linux-alpha@vger.kernel.org
Subject: [PATCH v3 06/19] asm/rwonce: Don't pull <asm/barrier.h> into 'asm-generic/rwonce.h'
Date: Fri, 10 Jul 2020 17:51:50 +0100 [thread overview]
Message-ID: <20200710165203.31284-7-will@kernel.org> (raw)
In-Reply-To: <20200710165203.31284-1-will@kernel.org>
Now that 'smp_read_barrier_depends()' has gone the way of the Norwegian
Blue, drop the inclusion of <asm/barrier.h> in 'asm-generic/rwonce.h'.
This requires fixups to some architecture vdso headers which were
previously relying on 'asm/barrier.h' coming in via 'linux/compiler.h'.
Signed-off-by: Will Deacon <will@kernel.org>
---
arch/arm/include/asm/vdso/gettimeofday.h | 1 +
arch/arm64/include/asm/vdso/compat_gettimeofday.h | 1 +
arch/arm64/include/asm/vdso/gettimeofday.h | 1 +
arch/riscv/include/asm/vdso/gettimeofday.h | 1 +
include/asm-generic/rwonce.h | 2 --
include/linux/nospec.h | 2 ++
6 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/arm/include/asm/vdso/gettimeofday.h b/arch/arm/include/asm/vdso/gettimeofday.h
index 36dc18553ed8..1b207cf07697 100644
--- a/arch/arm/include/asm/vdso/gettimeofday.h
+++ b/arch/arm/include/asm/vdso/gettimeofday.h
@@ -7,6 +7,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/errno.h>
#include <asm/unistd.h>
#include <asm/vdso/cp15.h>
diff --git a/arch/arm64/include/asm/vdso/compat_gettimeofday.h b/arch/arm64/include/asm/vdso/compat_gettimeofday.h
index b6907ae78e53..bcf7649999a4 100644
--- a/arch/arm64/include/asm/vdso/compat_gettimeofday.h
+++ b/arch/arm64/include/asm/vdso/compat_gettimeofday.h
@@ -7,6 +7,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/unistd.h>
#include <asm/errno.h>
diff --git a/arch/arm64/include/asm/vdso/gettimeofday.h b/arch/arm64/include/asm/vdso/gettimeofday.h
index afba6ba332f8..127fa63893e2 100644
--- a/arch/arm64/include/asm/vdso/gettimeofday.h
+++ b/arch/arm64/include/asm/vdso/gettimeofday.h
@@ -7,6 +7,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/unistd.h>
#define VDSO_HAS_CLOCK_GETRES 1
diff --git a/arch/riscv/include/asm/vdso/gettimeofday.h b/arch/riscv/include/asm/vdso/gettimeofday.h
index c8e818688ec1..3099362d9f26 100644
--- a/arch/riscv/include/asm/vdso/gettimeofday.h
+++ b/arch/riscv/include/asm/vdso/gettimeofday.h
@@ -4,6 +4,7 @@
#ifndef __ASSEMBLY__
+#include <asm/barrier.h>
#include <asm/unistd.h>
#include <asm/csr.h>
#include <uapi/linux/time.h>
diff --git a/include/asm-generic/rwonce.h b/include/asm-generic/rwonce.h
index cc810f1f18ca..cd0302746fb4 100644
--- a/include/asm-generic/rwonce.h
+++ b/include/asm-generic/rwonce.h
@@ -26,8 +26,6 @@
#include <linux/kasan-checks.h>
#include <linux/kcsan-checks.h>
-#include <asm/barrier.h>
-
/*
* Use __READ_ONCE() instead of READ_ONCE() if you do not require any
* atomicity. Note that this may result in tears!
diff --git a/include/linux/nospec.h b/include/linux/nospec.h
index 0c5ef54fd416..c1e79f72cd89 100644
--- a/include/linux/nospec.h
+++ b/include/linux/nospec.h
@@ -5,6 +5,8 @@
#ifndef _LINUX_NOSPEC_H
#define _LINUX_NOSPEC_H
+
+#include <linux/compiler.h>
#include <asm/barrier.h>
struct task_struct;
--
2.27.0.383.g050319c2ae-goog
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-07-10 16:52 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-10 16:51 [PATCH 00/18] Allow architectures to override __READ_ONCE() Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 01/19] tools: bpf: Use local copy of headers including uapi/linux/filter.h Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 02/19] compiler.h: Split {READ,WRITE}_ONCE definitions out into rwonce.h Will Deacon
2020-07-10 16:51 ` [PATCH v3 02/19] compiler.h: Split {READ, WRITE}_ONCE " Will Deacon
2020-07-10 16:51 ` [PATCH v3 02/19] compiler.h: Split {READ,WRITE}_ONCE " Will Deacon
2020-07-13 12:23 ` boqun.feng
2020-07-13 12:23 ` [PATCH v3 02/19] compiler.h: Split {READ, WRITE}_ONCE " boqun.feng
2020-07-13 12:23 ` [PATCH v3 02/19] compiler.h: Split {READ,WRITE}_ONCE " boqun.feng
2020-07-20 15:55 ` Will Deacon
2020-07-20 15:55 ` [PATCH v3 02/19] compiler.h: Split {READ, WRITE}_ONCE " Will Deacon
2020-07-20 15:55 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 03/19] asm/rwonce: Allow __READ_ONCE to be overridden by the architecture Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 04/19] alpha: Override READ_ONCE() with barriered implementation Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 05/19] asm/rwonce: Remove smp_read_barrier_depends() invocation Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon [this message]
2020-07-10 16:51 ` [PATCH v3 06/19] asm/rwonce: Don't pull <asm/barrier.h> into 'asm-generic/rwonce.h' Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 17:06 ` Nick Desaulniers
2020-07-10 17:06 ` Nick Desaulniers
2020-07-10 17:06 ` Nick Desaulniers
2020-07-10 17:15 ` Will Deacon
2020-07-10 17:15 ` Will Deacon
2020-07-10 17:15 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 07/19] vhost: Remove redundant use of read_barrier_depends() barrier Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-13 11:27 ` Michael S. Tsirkin
2020-07-13 11:27 ` Michael S. Tsirkin
2020-07-13 11:27 ` Michael S. Tsirkin
2020-07-10 16:51 ` [PATCH v3 08/19] alpha: Replace smp_read_barrier_depends() usage with smp_[r]mb() Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 09/19] locking/barriers: Remove definitions for [smp_]read_barrier_depends() Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 10/19] Documentation/barriers: Remove references to [smp_]read_barrier_depends() Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 11/19] Documentation/barriers/kokr: " Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 12/19] tools/memory-model: Remove smp_read_barrier_depends() from informal doc Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 13/19] include/linux: Remove smp_read_barrier_depends() from comments Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 14/19] checkpatch: Remove checks relating to [smp_]read_barrier_depends() Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` [PATCH v3 15/19] arm64: Reduce the number of header files pulled into vmlinux.lds.S Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:51 ` Will Deacon
2020-07-10 16:52 ` [PATCH v3 16/19] arm64: alternatives: Split up alternative.h Will Deacon
2020-07-10 16:52 ` Will Deacon
2020-07-10 16:52 ` Will Deacon
2020-07-10 16:52 ` [PATCH v3 17/19] arm64: cpufeatures: Add capability for LDAPR instruction Will Deacon
2020-07-10 16:52 ` Will Deacon
2020-07-10 16:52 ` Will Deacon
2020-07-10 16:52 ` [PATCH v3 18/19] arm64: alternatives: Remove READ_ONCE() usage during patch operation Will Deacon
2020-07-10 16:52 ` Will Deacon
2020-07-10 16:52 ` Will Deacon
2020-07-10 16:52 ` [PATCH v3 19/19] arm64: lto: Strengthen READ_ONCE() to acquire when CONFIG_LTO=y Will Deacon
2020-07-10 16:52 ` Will Deacon
2020-07-10 16:52 ` Will Deacon
2020-07-28 20:40 ` Pavel Machek
2020-07-28 20:40 ` Pavel Machek
2020-07-28 20:40 ` Pavel Machek
2020-07-13 10:34 ` [PATCH 00/18] Allow architectures to override __READ_ONCE() Peter Zijlstra
2020-07-13 10:34 ` Peter Zijlstra
2020-07-13 10:34 ` Peter Zijlstra
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200710165203.31284-7-will@kernel.org \
--to=will@kernel.org \
--cc=arnd@arndb.de \
--cc=boqun.feng@gmail.com \
--cc=catalin.marinas@arm.com \
--cc=elver@google.com \
--cc=ink@jurassic.park.msu.ru \
--cc=jasowang@redhat.com \
--cc=joelaf@google.com \
--cc=keescook@chromium.org \
--cc=kernel-team@android.com \
--cc=linux-alpha@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=mattst88@gmail.com \
--cc=mst@redhat.com \
--cc=ndesaulniers@google.com \
--cc=paulmck@kernel.org \
--cc=peterz@infradead.org \
--cc=rth@twiddle.net \
--cc=samitolvanen@google.com \
--cc=stern@rowland.harvard.edu \
--cc=virtualization@lists.linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.