From: Chao Gao <chao.gao@intel.com>
To: xen-devel@lists.xenproject.org
Cc: Sergey Dyasli <sergey.dyasli@citrix.com>,
Ashok Raj <ashok.raj@intel.com>, Wei Liu <wl@xen.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Chao Gao <chao.gao@intel.com>
Subject: [Xen-devel] [PATCH v7 01/10] misc/xen-ucode: Upload a microcode blob to the hypervisor
Date: Mon, 27 May 2019 16:31:22 +0800 [thread overview]
Message-ID: <1558945891-3015-2-git-send-email-chao.gao@intel.com> (raw)
Message-ID: <20190527083122.ihBhgJM3tf_G7P1J7FBpIFryyvYRici3jMVXVlNUjmQ@z> (raw)
In-Reply-To: <1558945891-3015-1-git-send-email-chao.gao@intel.com>
This patch provides a tool for late microcode update.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Chao Gao <chao.gao@intel.com>
---
Changes in v7:
- introduce xc_microcode_update() rather than xc_platform_op()
- avoid creating bounce buffer twice
- rename xenmicrocode to xen-ucode, following naming tradition
of other tools there.
---
tools/libxc/include/xenctrl.h | 1 +
tools/libxc/xc_misc.c | 23 +++++++++++++
tools/misc/Makefile | 4 +++
tools/misc/xen-ucode.c | 78 +++++++++++++++++++++++++++++++++++++++++++
4 files changed, 106 insertions(+)
create mode 100644 tools/misc/xen-ucode.c
diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h
index 538007a..6d80ae5 100644
--- a/tools/libxc/include/xenctrl.h
+++ b/tools/libxc/include/xenctrl.h
@@ -1244,6 +1244,7 @@ typedef uint32_t xc_node_to_node_dist_t;
int xc_physinfo(xc_interface *xch, xc_physinfo_t *info);
int xc_cputopoinfo(xc_interface *xch, unsigned *max_cpus,
xc_cputopo_t *cputopo);
+int xc_microcode_update(xc_interface *xch, const void *buf, size_t len);
int xc_numainfo(xc_interface *xch, unsigned *max_nodes,
xc_meminfo_t *meminfo, uint32_t *distance);
int xc_pcitopoinfo(xc_interface *xch, unsigned num_devs,
diff --git a/tools/libxc/xc_misc.c b/tools/libxc/xc_misc.c
index 5e6714a..85538e0 100644
--- a/tools/libxc/xc_misc.c
+++ b/tools/libxc/xc_misc.c
@@ -226,6 +226,29 @@ int xc_physinfo(xc_interface *xch,
return 0;
}
+int xc_microcode_update(xc_interface *xch, const void *buf, size_t len)
+{
+ int ret;
+ DECLARE_PLATFORM_OP;
+ DECLARE_HYPERCALL_BUFFER(struct xenpf_microcode_update, uc);
+
+ uc = xc_hypercall_buffer_alloc(xch, uc, len);
+ if (uc == NULL)
+ return -1;
+
+ memcpy(uc, buf, len);
+
+ platform_op.cmd = XENPF_microcode_update;
+ platform_op.u.microcode.length = len;
+ set_xen_guest_handle(platform_op.u.microcode.data, uc);
+
+ ret = do_platform_op(xch, &platform_op);
+
+ xc_hypercall_buffer_free(xch, uc);
+
+ return ret;
+}
+
int xc_cputopoinfo(xc_interface *xch, unsigned *max_cpus,
xc_cputopo_t *cputopo)
{
diff --git a/tools/misc/Makefile b/tools/misc/Makefile
index d4320dc..63947bf 100644
--- a/tools/misc/Makefile
+++ b/tools/misc/Makefile
@@ -22,6 +22,7 @@ INSTALL_SBIN-$(CONFIG_X86) += xen-hvmcrash
INSTALL_SBIN-$(CONFIG_X86) += xen-hvmctx
INSTALL_SBIN-$(CONFIG_X86) += xen-lowmemd
INSTALL_SBIN-$(CONFIG_X86) += xen-mfndump
+INSTALL_SBIN-$(CONFIG_X86) += xen-ucode
INSTALL_SBIN += xencov
INSTALL_SBIN += xenlockprof
INSTALL_SBIN += xenperf
@@ -113,4 +114,7 @@ xen-lowmemd: xen-lowmemd.o
xencov: xencov.o
$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
+xen-ucode: xen-ucode.o
+ $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
+
-include $(DEPS_INCLUDE)
diff --git a/tools/misc/xen-ucode.c b/tools/misc/xen-ucode.c
new file mode 100644
index 0000000..da668ca
--- /dev/null
+++ b/tools/misc/xen-ucode.c
@@ -0,0 +1,78 @@
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <string.h>
+#include <inttypes.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <xenctrl.h>
+
+void show_help(void)
+{
+ fprintf(stderr,
+ "xenmicrocode: Xen microcode updating tool\n"
+ "Usage: xenmicrocode <microcode blob>\n");
+}
+
+int main(int argc, char *argv[])
+{
+ int fd, len, ret;
+ char *filename, *buf;
+ struct stat st;
+ xc_interface *xch;
+
+ if (argc < 2)
+ {
+ show_help();
+ return 0;
+ }
+
+ filename = argv[1];
+ fd = open(filename, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "Could not open %s. (err: %s)\n",
+ filename, strerror(errno));
+ return errno;
+ }
+
+ if (stat(filename, &st) != 0) {
+ fprintf(stderr, "Could not get the size of %s. (err: %s)\n",
+ filename, strerror(errno));
+ return errno;
+ }
+
+ len = st.st_size;
+ buf = mmap(0, len, PROT_READ, MAP_PRIVATE, fd, 0);
+ if (buf == MAP_FAILED) {
+ fprintf(stderr, "mmap failed. (error: %s)\n", strerror(errno));
+ return errno;
+ }
+
+ xch = xc_interface_open(0,0,0);
+ if (xch == NULL)
+ {
+ fprintf(stderr, "Error opening xc interface. (err: %s)\n",
+ strerror(errno));
+ return errno;
+ }
+
+ ret = xc_microcode_update(xch, buf, len);
+ if (ret)
+ fprintf(stderr, "Failed to update microcode. (err: %s)\n",
+ strerror(errno));
+
+ xc_interface_close(xch);
+
+ if (munmap(buf, len)) {
+ printf("Could not unmap: %d(%s)\n", errno, strerror(errno));
+ return errno;
+ }
+ close(fd);
+
+ return 0;
+}
--
1.8.3.1
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next prev parent reply other threads:[~2019-05-27 8:27 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-27 8:31 [PATCH v7 00/10] improve late microcode loading Chao Gao
2019-05-27 8:31 ` [Xen-devel] " Chao Gao
2019-05-27 8:31 ` Chao Gao [this message]
2019-05-27 8:31 ` [Xen-devel] [PATCH v7 01/10] misc/xen-ucode: Upload a microcode blob to the hypervisor Chao Gao
2019-06-04 16:14 ` Andrew Cooper
2019-06-04 16:23 ` Jan Beulich
2019-06-06 2:29 ` Chao Gao
2019-05-27 8:31 ` [PATCH v7 02/10] microcode/intel: extend microcode_update_match() Chao Gao
2019-05-27 8:31 ` [Xen-devel] " Chao Gao
2019-06-04 14:39 ` Jan Beulich
2019-06-05 13:22 ` Roger Pau Monné
2019-06-05 14:16 ` Jan Beulich
2019-06-06 8:26 ` Chao Gao
2019-06-06 9:01 ` Jan Beulich
2019-05-27 8:31 ` [PATCH v7 03/10] microcode: introduce a global cache of ucode patch Chao Gao
2019-05-27 8:31 ` [Xen-devel] " Chao Gao
2019-06-04 15:03 ` Jan Beulich
2019-06-10 5:33 ` Chao Gao
2019-06-11 6:50 ` Jan Beulich
2019-05-27 8:31 ` [PATCH v7 04/10] microcode: remove struct ucode_cpu_info Chao Gao
2019-05-27 8:31 ` [Xen-devel] " Chao Gao
2019-06-04 15:13 ` Jan Beulich
2019-06-10 7:19 ` Chao Gao
2019-05-27 8:31 ` [PATCH v7 05/10] microcode: remove pointless 'cpu' parameter Chao Gao
2019-05-27 8:31 ` [Xen-devel] " Chao Gao
2019-06-04 15:29 ` Jan Beulich
2019-06-10 7:31 ` Chao Gao
2019-05-27 8:31 ` [PATCH v7 06/10] microcode: split out apply_microcode() from cpu_request_microcode() Chao Gao
2019-05-27 8:31 ` [Xen-devel] " Chao Gao
2019-06-05 12:37 ` Jan Beulich
2019-06-11 3:32 ` Chao Gao
2019-06-11 7:08 ` Jan Beulich
2019-06-11 8:53 ` Chao Gao
2019-06-11 9:15 ` Jan Beulich
2019-05-27 8:31 ` [PATCH v7 07/10] microcode/intel: Writeback and invalidate caches before updating microcode Chao Gao
2019-05-27 8:31 ` [Xen-devel] " Chao Gao
2019-06-05 13:20 ` Jan Beulich
2019-05-27 8:31 ` [PATCH v7 08/10] x86/microcode: Synchronize late microcode loading Chao Gao
2019-05-27 8:31 ` [Xen-devel] " Chao Gao
2019-06-05 14:09 ` Jan Beulich
2019-06-11 12:36 ` Chao Gao
2019-06-11 12:58 ` Jan Beulich
2019-06-11 15:47 ` Raj, Ashok
2019-06-05 14:42 ` Roger Pau Monné
2019-05-27 8:31 ` [PATCH v7 09/10] microcode: remove microcode_update_lock Chao Gao
2019-05-27 8:31 ` [Xen-devel] " Chao Gao
2019-06-05 14:52 ` Roger Pau Monné
2019-06-05 15:15 ` Jan Beulich
2019-06-05 14:53 ` Jan Beulich
2019-06-11 12:46 ` Chao Gao
2019-06-11 13:23 ` Jan Beulich
2019-06-11 16:04 ` Raj, Ashok
2019-06-12 7:38 ` Jan Beulich
2019-06-13 14:05 ` Chao Gao
2019-06-13 14:08 ` Jan Beulich
2019-06-13 14:58 ` Chao Gao
2019-06-13 17:47 ` Raj, Ashok
2019-06-14 8:58 ` Jan Beulich
2019-05-27 8:31 ` [PATCH v7 10/10] x86/microcode: always collect_cpu_info() during boot Chao Gao
2019-05-27 8:31 ` [Xen-devel] " Chao Gao
2019-06-05 14:56 ` Roger Pau Monné
2019-06-11 13:02 ` Chao Gao
2019-06-05 15:05 ` Jan Beulich
2019-06-11 12:58 ` Chao Gao
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