From: junyan.he@gmx.com
To: qemu-devel@nongnu.org
Cc: ehabkost@redhat.com, imammedo@redhat.com, pbonzini@redhat.com,
crosthwaite.peter@gmail.com, rth@twiddle.net,
xiaoguangrong.eric@gmail.com, mst@redhat.com,
quintela@redhat.com, dgilbert@redhat.com, stefanha@redhat.com,
Junyan He <junyan.he@intel.com>,
Haozhong Zhang <haozhong.zhang@intel.com>
Subject: [Qemu-devel] [PATCH 3/9 V5] configure: add libpmem support
Date: Thu, 10 May 2018 10:08:52 +0800 [thread overview]
Message-ID: <1525918138-6189-4-git-send-email-junyan.he@gmx.com> (raw)
In-Reply-To: <1525918138-6189-1-git-send-email-junyan.he@gmx.com>
From: Junyan He <junyan.he@intel.com>
Add a pair of configure options --{enable,disable}-libpmem to control
whether QEMU is compiled with PMDK libpmem [1].
QEMU may write to the host persistent memory (e.g. in vNVDIMM label
emulation and live migration), so it must take the proper operations
to ensure the persistence of its own writes. Depending on the CPU
models and available instructions, the optimal operation can vary [2].
PMDK libpmem have already implemented those operations on multiple CPU
models (x86 and ARM) and the logic to select the optimal ones, so QEMU
can just use libpmem rather than re-implement them.
[1] PMDK (formerly known as NMVL), https://github.com/pmem/pmdk/
[2] https://github.com/pmem/pmdk/blob/38bfa652721a37fd94c0130ce0e3f5d8baa3ed40/src/libpmem/pmem.c#L33
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
---
configure | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/configure b/configure
index 1443422..cbb3793 100755
--- a/configure
+++ b/configure
@@ -456,6 +456,7 @@ jemalloc="no"
replication="yes"
vxhs=""
libxml2=""
+libpmem=""
supported_cpu="no"
supported_os="no"
@@ -1379,6 +1380,10 @@ for opt do
;;
--disable-git-update) git_update=no
;;
+ --enable-libpmem) libpmem=yes
+ ;;
+ --disable-libpmem) libpmem=no
+ ;;
*)
echo "ERROR: unknown option $opt"
echo "Try '$0 --help' for more information"
@@ -1636,6 +1641,7 @@ disabled with --disable-FEATURE, default is enabled if available:
crypto-afalg Linux AF_ALG crypto backend driver
vhost-user vhost-user support
capstone capstone disassembler support
+ libpmem libpmem support
NOTE: The object files are built at the place where configure is launched
EOF
@@ -5443,6 +5449,30 @@ EOF
fi
##########################################
+# check for libpmem
+
+if test "$libpmem" != "no"; then
+ cat > $TMPC <<EOF
+#include <libpmem.h>
+int main(void)
+{
+ pmem_is_pmem(0, 0);
+ return 0;
+}
+EOF
+ libpmem_libs="-lpmem"
+ if compile_prog "" "$libpmem_libs" ; then
+ libs_softmmu="$libpmem_libs $libs_softmmu"
+ libpmem="yes"
+ else
+ if test "$libpmem" = "yes" ; then
+ feature_not_found "libpmem" "Install nvml or pmdk"
+ fi
+ libpmem="no"
+ fi
+fi
+
+##########################################
# End of CC checks
# After here, no more $cc or $ld runs
@@ -5903,6 +5933,7 @@ echo "avx2 optimization $avx2_opt"
echo "replication support $replication"
echo "VxHS block device $vxhs"
echo "capstone $capstone"
+echo "libpmem support $libpmem"
if test "$sdl_too_old" = "yes"; then
echo "-> Your SDL version is too old - please upgrade to have SDL support"
@@ -6647,6 +6678,10 @@ if test "$vxhs" = "yes" ; then
echo "VXHS_LIBS=$vxhs_libs" >> $config_host_mak
fi
+if test "$libpmem" = "yes" ; then
+ echo "CONFIG_LIBPMEM=y" >> $config_host_mak
+fi
+
if test "$tcg_interpreter" = "yes"; then
QEMU_INCLUDES="-iquote \$(SRC_PATH)/tcg/tci $QEMU_INCLUDES"
elif test "$ARCH" = "sparc64" ; then
--
2.7.4
next prev parent reply other threads:[~2018-05-10 2:09 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-10 2:08 [Qemu-devel] [PATCH V5 0/9] nvdimm: guarantee persistence of QEMU writes to persistent memory junyan.he
2018-05-10 2:08 ` [Qemu-devel] [PATCH 1/9 V5] memory, exec: switch file ram allocation functions to 'flags' parameters junyan.he
2018-05-10 21:08 ` Murilo Opsfelder Araujo
2018-05-11 7:20 ` Junyan He
2018-05-31 12:46 ` Stefan Hajnoczi
2018-05-10 2:08 ` [Qemu-devel] [PATCH 2/9 V5] hostmem-file: add the 'pmem' option junyan.he
2018-05-31 12:35 ` Stefan Hajnoczi
2018-05-31 13:09 ` Stefan Hajnoczi
2018-06-01 5:14 ` Junyan He
2018-05-10 2:08 ` junyan.he [this message]
2018-05-31 12:54 ` [Qemu-devel] [PATCH 3/9 V5] configure: add libpmem support Stefan Hajnoczi
2018-05-10 2:08 ` [Qemu-devel] [PATCH 4/9 V5] mem/nvdimm: ensure write persistence to PMEM in label emulation junyan.he
2018-05-10 2:08 ` [Qemu-devel] [PATCH 5/9 V5] migration/ram: ensure write persistence on loading zero pages to PMEM junyan.he
2018-05-10 2:08 ` [Qemu-devel] [PATCH 6/9 V5] migration/ram: ensure write persistence on loading normal " junyan.he
2018-05-10 2:08 ` [Qemu-devel] [PATCH 7/9 V5] migration/ram: ensure write persistence on loading compressed " junyan.he
2018-05-10 2:08 ` [Qemu-devel] [PATCH 8/9 V5] migration/ram: ensure write persistence on loading xbzrle " junyan.he
2018-05-10 2:08 ` [Qemu-devel] [PATCH 9/9 V5] migration/ram: Add check and info message to nvdimm post copy junyan.he
2018-05-10 2:21 ` [Qemu-devel] [PATCH V5 0/9] nvdimm: guarantee persistence of QEMU writes to persistent memory He, Junyan
2018-05-10 2:22 ` no-reply
2018-05-21 3:19 ` Junyan He
2018-05-28 5:26 ` Junyan He
2018-05-31 13:18 ` Stefan Hajnoczi
2018-05-31 14:28 ` Dr. David Alan Gilbert
2018-05-31 14:36 ` Junyan He
2018-05-31 14:42 ` Dr. David Alan Gilbert
2018-05-31 15:04 ` Junyan He
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