* [PATCH] [PATCH v6] linux-user: syscall: ioctls: support DRM_IOCTL_VERSION
@ 2020-06-04 1:45 chengang
2020-06-04 9:10 ` Laurent Vivier
0 siblings, 1 reply; 3+ messages in thread
From: chengang @ 2020-06-04 1:45 UTC (permalink / raw)
To: laurent, riku.voipio; +Cc: chengang, qemu-devel
From: Chen Gang <chengang@emindsoft.com.cn>
Another DRM_IOCTL_* commands will be done later.
Signed-off-by: Chen Gang <chengang@emindsoft.com.cn>
---
configure | 10 ++++
linux-user/ioctls.h | 5 ++
linux-user/syscall.c | 95 ++++++++++++++++++++++++++++++++++++++
linux-user/syscall_defs.h | 15 ++++++
linux-user/syscall_types.h | 11 +++++
5 files changed, 136 insertions(+)
diff --git a/configure b/configure
index f087d2bcd1..389dbb1d09 100755
--- a/configure
+++ b/configure
@@ -3136,6 +3136,13 @@ if ! check_include "ifaddrs.h" ; then
have_ifaddrs_h=no
fi
+#########################################
+# libdrm check
+have_drm_h=no
+if check_include "libdrm/drm.h" ; then
+ have_drm_h=yes
+fi
+
##########################################
# VTE probe
@@ -7127,6 +7134,9 @@ fi
if test "$have_ifaddrs_h" = "yes" ; then
echo "HAVE_IFADDRS_H=y" >> $config_host_mak
fi
+if test "$have_drm_h" = "yes" ; then
+ echo "HAVE_DRM_H=y" >> $config_host_mak
+fi
if test "$have_broken_size_max" = "yes" ; then
echo "HAVE_BROKEN_SIZE_MAX=y" >> $config_host_mak
fi
diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
index 0defa1d8c1..f2e2fa9c87 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -574,6 +574,11 @@
IOCTL_SPECIAL(SIOCDELRT, IOC_W, do_ioctl_rt,
MK_PTR(MK_STRUCT(STRUCT_rtentry)))
+#ifdef HAVE_DRM_H
+ IOCTL_SPECIAL(DRM_IOCTL_VERSION, IOC_RW, do_ioctl_drm,
+ MK_PTR(MK_STRUCT(STRUCT_drm_version)))
+#endif
+
#ifdef TARGET_TIOCSTART
IOCTL_IGNORE(TIOCSTART)
IOCTL_IGNORE(TIOCSTOP)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 7f6700c54e..1744e7acc7 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -112,6 +112,9 @@
#include <linux/if_alg.h>
#include <linux/rtc.h>
#include <sound/asound.h>
+#ifdef HAVE_DRM_H
+#include <libdrm/drm.h>
+#endif
#include "linux_loop.h"
#include "uname.h"
@@ -5276,6 +5279,98 @@ static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp,
}
#endif
+#ifdef HAVE_DRM_H
+
+static void unlock_drm_version(struct drm_version *host_ver)
+{
+ unlock_user(host_ver->name, 0UL, 0);
+ unlock_user(host_ver->date, 0UL, 0);
+ unlock_user(host_ver->desc, 0UL, 0);
+}
+
+static inline abi_long target_to_host_drmversion(struct drm_version *host_ver,
+ struct target_drm_version *target_ver)
+{
+ memset(host_ver, 0, sizeof(*host_ver));
+
+ __get_user(host_ver->name_len, &target_ver->name_len);
+ if (host_ver->name_len) {
+ host_ver->name = lock_user(VERIFY_WRITE, target_ver->name,
+ target_ver->name_len, 0);
+ if (!host_ver->name) {
+ goto err;
+ }
+ }
+
+ __get_user(host_ver->date_len, &target_ver->date_len);
+ if (host_ver->date_len) {
+ host_ver->date = lock_user(VERIFY_WRITE, target_ver->date,
+ target_ver->date_len, 0);
+ if (!host_ver->date) {
+ goto err;
+ }
+ }
+
+ __get_user(host_ver->desc_len, &target_ver->desc_len);
+ if (host_ver->desc_len) {
+ host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc,
+ target_ver->desc_len, 0);
+ if (!host_ver->desc) {
+ goto err;
+ }
+ }
+
+ return 0;
+err:
+ unlock_drm_version(host_ver);
+ return -EFAULT;
+}
+
+static inline abi_long host_to_target_drmversion(
+ struct target_drm_version *target_ver,
+ struct drm_version *host_ver)
+{
+ __put_user(host_ver->version_major, &target_ver->version_major);
+ __put_user(host_ver->version_minor, &target_ver->version_minor);
+ __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel);
+ __put_user(host_ver->name_len, &target_ver->name_len);
+ __put_user(host_ver->date_len, &target_ver->date_len);
+ __put_user(host_ver->desc_len, &target_ver->desc_len);
+ unlock_user(host_ver->name, target_ver->name, host_ver->name_len);
+ unlock_user(host_ver->date, target_ver->date, host_ver->date_len);
+ unlock_user(host_ver->desc, target_ver->desc, host_ver->desc_len);
+ return 0;
+}
+
+static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp,
+ int fd, int cmd, abi_long arg)
+{
+ struct drm_version *ver;
+ struct target_drm_version *target_ver;
+ abi_long ret;
+
+ switch (ie->host_cmd) {
+ case DRM_IOCTL_VERSION:
+ if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) {
+ return -TARGET_EFAULT;
+ }
+ ver = (struct drm_version *)buf_temp;
+ ret = target_to_host_drmversion(ver, target_ver);
+ if (!is_error(ret)) {
+ ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver));
+ if (!is_error(ret)) {
+ ret = host_to_target_drmversion(target_ver, ver);
+ }
+ unlock_drm_version(ver);
+ }
+ unlock_user_struct(target_ver, arg, 0);
+ return ret;
+ }
+ return -TARGET_ENOSYS;
+}
+
+#endif
+
static IOCTLEntry ioctl_entries[] = {
#define IOCTL(cmd, access, ...) \
{ TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } },
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 152ec637cb..3c261cff0e 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -1167,6 +1167,9 @@ struct target_rtc_pll_info {
#define TARGET_DM_TARGET_MSG TARGET_IOWRU(0xfd, 0x0e)
#define TARGET_DM_DEV_SET_GEOMETRY TARGET_IOWRU(0xfd, 0x0f)
+/* drm ioctls */
+#define TARGET_DRM_IOCTL_VERSION TARGET_IOWRU('d', 0x00)
+
/* from asm/termbits.h */
#define TARGET_NCC 8
@@ -2598,6 +2601,18 @@ struct target_mq_attr {
abi_long mq_curmsgs;
};
+struct target_drm_version {
+ int version_major;
+ int version_minor;
+ int version_patchlevel;
+ abi_ulong name_len;
+ abi_ulong name;
+ abi_ulong date_len;
+ abi_ulong date;
+ abi_ulong desc_len;
+ abi_ulong desc;
+};
+
#include "socket.h"
#include "errno_defs.h"
diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h
index 4e12c1661e..e2b0484f50 100644
--- a/linux-user/syscall_types.h
+++ b/linux-user/syscall_types.h
@@ -292,6 +292,17 @@ STRUCT(dm_target_versions,
STRUCT(dm_target_msg,
TYPE_ULONGLONG) /* sector */
+STRUCT(drm_version,
+ TYPE_INT, /* version_major */
+ TYPE_INT, /* version_minor */
+ TYPE_INT, /* version_patchlevel */
+ TYPE_ULONG, /* name_len */
+ TYPE_PTRVOID, /* name */
+ TYPE_ULONG, /* date_len */
+ TYPE_PTRVOID, /* date */
+ TYPE_ULONG, /* desc_len */
+ TYPE_PTRVOID) /* desc */
+
STRUCT(file_clone_range,
TYPE_LONGLONG, /* src_fd */
TYPE_ULONGLONG, /* src_offset */
--
2.24.0.308.g228f53135a
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] [PATCH v6] linux-user: syscall: ioctls: support DRM_IOCTL_VERSION
2020-06-04 1:45 [PATCH] [PATCH v6] linux-user: syscall: ioctls: support DRM_IOCTL_VERSION chengang
@ 2020-06-04 9:10 ` Laurent Vivier
2020-06-04 10:01 ` Chen Gang
0 siblings, 1 reply; 3+ messages in thread
From: Laurent Vivier @ 2020-06-04 9:10 UTC (permalink / raw)
To: chengang, riku.voipio; +Cc: qemu-devel
Le 04/06/2020 à 03:45, chengang@emindsoft.com.cn a écrit :
> From: Chen Gang <chengang@emindsoft.com.cn>
>
> Another DRM_IOCTL_* commands will be done later.
>
> Signed-off-by: Chen Gang <chengang@emindsoft.com.cn>
> ---
> configure | 10 ++++
> linux-user/ioctls.h | 5 ++
> linux-user/syscall.c | 95 ++++++++++++++++++++++++++++++++++++++
> linux-user/syscall_defs.h | 15 ++++++
> linux-user/syscall_types.h | 11 +++++
> 5 files changed, 136 insertions(+)
>
> diff --git a/configure b/configure
> index f087d2bcd1..389dbb1d09 100755
> --- a/configure
> +++ b/configure
> @@ -3136,6 +3136,13 @@ if ! check_include "ifaddrs.h" ; then
> have_ifaddrs_h=no
> fi
>
> +#########################################
> +# libdrm check
> +have_drm_h=no
> +if check_include "libdrm/drm.h" ; then
> + have_drm_h=yes
> +fi
> +
> ##########################################
> # VTE probe
>
> @@ -7127,6 +7134,9 @@ fi
> if test "$have_ifaddrs_h" = "yes" ; then
> echo "HAVE_IFADDRS_H=y" >> $config_host_mak
> fi
> +if test "$have_drm_h" = "yes" ; then
> + echo "HAVE_DRM_H=y" >> $config_host_mak
> +fi
> if test "$have_broken_size_max" = "yes" ; then
> echo "HAVE_BROKEN_SIZE_MAX=y" >> $config_host_mak
> fi
> diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
> index 0defa1d8c1..f2e2fa9c87 100644
> --- a/linux-user/ioctls.h
> +++ b/linux-user/ioctls.h
> @@ -574,6 +574,11 @@
> IOCTL_SPECIAL(SIOCDELRT, IOC_W, do_ioctl_rt,
> MK_PTR(MK_STRUCT(STRUCT_rtentry)))
>
> +#ifdef HAVE_DRM_H
> + IOCTL_SPECIAL(DRM_IOCTL_VERSION, IOC_RW, do_ioctl_drm,
> + MK_PTR(MK_STRUCT(STRUCT_drm_version)))
> +#endif
> +
> #ifdef TARGET_TIOCSTART
> IOCTL_IGNORE(TIOCSTART)
> IOCTL_IGNORE(TIOCSTOP)
> diff --git a/linux-user/syscall.c b/linux-user/syscall.c
> index 7f6700c54e..1744e7acc7 100644
> --- a/linux-user/syscall.c
> +++ b/linux-user/syscall.c
> @@ -112,6 +112,9 @@
> #include <linux/if_alg.h>
> #include <linux/rtc.h>
> #include <sound/asound.h>
> +#ifdef HAVE_DRM_H
> +#include <libdrm/drm.h>
> +#endif
> #include "linux_loop.h"
> #include "uname.h"
>
> @@ -5276,6 +5279,98 @@ static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp,
> }
> #endif
>
> +#ifdef HAVE_DRM_H
> +
> +static void unlock_drm_version(struct drm_version *host_ver)
> +{
> + unlock_user(host_ver->name, 0UL, 0);
> + unlock_user(host_ver->date, 0UL, 0);
> + unlock_user(host_ver->desc, 0UL, 0);
> +}
This is correct but I would prefer to not have this kind of function
with 0UL parameter.
You can use target_ver for the guest pointer and host_ver for the len,
guest pointer will be ignored if host pointer is NULL.
You can have a generic function that not copies data in case of error:
static void unlock_drm_strings(struct drm_version *host_ver,
struct target_drm_version *target_ver,
int copy)
{
unlock_user(host_ver->name, target_ver->name,
copy ? host_ver->name_len : 0);
...
> +
> +static inline abi_long target_to_host_drmversion(struct drm_version *host_ver,
> + struct target_drm_version *target_ver)
> +{
> + memset(host_ver, 0, sizeof(*host_ver));
> +
> + __get_user(host_ver->name_len, &target_ver->name_len);
> + if (host_ver->name_len) {
> + host_ver->name = lock_user(VERIFY_WRITE, target_ver->name,
> + target_ver->name_len, 0);
> + if (!host_ver->name) {
> + goto err;
> + }
> + }
> +
> + __get_user(host_ver->date_len, &target_ver->date_len);
> + if (host_ver->date_len) {
> + host_ver->date = lock_user(VERIFY_WRITE, target_ver->date,
> + target_ver->date_len, 0);
> + if (!host_ver->date) {
> + goto err;
> + }
> + }
> +
> + __get_user(host_ver->desc_len, &target_ver->desc_len);
> + if (host_ver->desc_len) {
> + host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc,
> + target_ver->desc_len, 0);
> + if (!host_ver->desc) {
> + goto err;
> + }
> + }
> +
> + return 0;
> +err:
> + unlock_drm_version(host_ver);
unlock_drm_strings(host_ver, target_ver, 0);
> + return -EFAULT;
> +}
> +
> +static inline abi_long host_to_target_drmversion(
> + struct target_drm_version *target_ver,
> + struct drm_version *host_ver)
> +{
> + __put_user(host_ver->version_major, &target_ver->version_major);
> + __put_user(host_ver->version_minor, &target_ver->version_minor);
> + __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel);
> + __put_user(host_ver->name_len, &target_ver->name_len);
> + __put_user(host_ver->date_len, &target_ver->date_len);
> + __put_user(host_ver->desc_len, &target_ver->desc_len);
> + unlock_user(host_ver->name, target_ver->name, host_ver->name_len);
> + unlock_user(host_ver->date, target_ver->date, host_ver->date_len);
> + unlock_user(host_ver->desc, target_ver->desc, host_ver->desc_len);
unlock_drm_strings(host_ver, target_ver, 1);
> + return 0;
> +}
> +
> +static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp,
> + int fd, int cmd, abi_long arg)
> +{
> + struct drm_version *ver;
> + struct target_drm_version *target_ver;
> + abi_long ret;
> +
> + switch (ie->host_cmd) {
> + case DRM_IOCTL_VERSION:
> + if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) {
> + return -TARGET_EFAULT;
> + }
> + ver = (struct drm_version *)buf_temp;
> + ret = target_to_host_drmversion(ver, target_ver);
> + if (!is_error(ret)) {
> + ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver));
> + if (!is_error(ret)) {
> + ret = host_to_target_drmversion(target_ver, ver);
> + }
> + unlock_drm_version(ver);
} else {
unlock_drm_strings(host_ver, target_ver, 0);
}
Thanks,
Laurent
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] [PATCH v6] linux-user: syscall: ioctls: support DRM_IOCTL_VERSION
2020-06-04 9:10 ` Laurent Vivier
@ 2020-06-04 10:01 ` Chen Gang
0 siblings, 0 replies; 3+ messages in thread
From: Chen Gang @ 2020-06-04 10:01 UTC (permalink / raw)
To: Laurent Vivier, riku.voipio; +Cc: qemu-devel
That sounds good, I'll send patch v7, thanks.
On 2020/6/4 下午5:10, Laurent Vivier wrote:
> Le 04/06/2020 à 03:45, chengang@emindsoft.com.cn a écrit :
>> From: Chen Gang <chengang@emindsoft.com.cn>
>>
>> Another DRM_IOCTL_* commands will be done later.
>>
>> Signed-off-by: Chen Gang <chengang@emindsoft.com.cn>
>> ---
>> configure | 10 ++++
>> linux-user/ioctls.h | 5 ++
>> linux-user/syscall.c | 95 ++++++++++++++++++++++++++++++++++++++
>> linux-user/syscall_defs.h | 15 ++++++
>> linux-user/syscall_types.h | 11 +++++
>> 5 files changed, 136 insertions(+)
>>
>> diff --git a/configure b/configure
>> index f087d2bcd1..389dbb1d09 100755
>> --- a/configure
>> +++ b/configure
>> @@ -3136,6 +3136,13 @@ if ! check_include "ifaddrs.h" ; then
>> have_ifaddrs_h=no
>> fi
>>
>> +#########################################
>> +# libdrm check
>> +have_drm_h=no
>> +if check_include "libdrm/drm.h" ; then
>> + have_drm_h=yes
>> +fi
>> +
>> ##########################################
>> # VTE probe
>>
>> @@ -7127,6 +7134,9 @@ fi
>> if test "$have_ifaddrs_h" = "yes" ; then
>> echo "HAVE_IFADDRS_H=y" >> $config_host_mak
>> fi
>> +if test "$have_drm_h" = "yes" ; then
>> + echo "HAVE_DRM_H=y" >> $config_host_mak
>> +fi
>> if test "$have_broken_size_max" = "yes" ; then
>> echo "HAVE_BROKEN_SIZE_MAX=y" >> $config_host_mak
>> fi
>> diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
>> index 0defa1d8c1..f2e2fa9c87 100644
>> --- a/linux-user/ioctls.h
>> +++ b/linux-user/ioctls.h
>> @@ -574,6 +574,11 @@
>> IOCTL_SPECIAL(SIOCDELRT, IOC_W, do_ioctl_rt,
>> MK_PTR(MK_STRUCT(STRUCT_rtentry)))
>>
>> +#ifdef HAVE_DRM_H
>> + IOCTL_SPECIAL(DRM_IOCTL_VERSION, IOC_RW, do_ioctl_drm,
>> + MK_PTR(MK_STRUCT(STRUCT_drm_version)))
>> +#endif
>> +
>> #ifdef TARGET_TIOCSTART
>> IOCTL_IGNORE(TIOCSTART)
>> IOCTL_IGNORE(TIOCSTOP)
>> diff --git a/linux-user/syscall.c b/linux-user/syscall.c
>> index 7f6700c54e..1744e7acc7 100644
>> --- a/linux-user/syscall.c
>> +++ b/linux-user/syscall.c
>> @@ -112,6 +112,9 @@
>> #include <linux/if_alg.h>
>> #include <linux/rtc.h>
>> #include <sound/asound.h>
>> +#ifdef HAVE_DRM_H
>> +#include <libdrm/drm.h>
>> +#endif
>> #include "linux_loop.h"
>> #include "uname.h"
>>
>> @@ -5276,6 +5279,98 @@ static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp,
>> }
>> #endif
>>
>> +#ifdef HAVE_DRM_H
>> +
>> +static void unlock_drm_version(struct drm_version *host_ver)
>> +{
>> + unlock_user(host_ver->name, 0UL, 0);
>> + unlock_user(host_ver->date, 0UL, 0);
>> + unlock_user(host_ver->desc, 0UL, 0);
>> +}
>
> This is correct but I would prefer to not have this kind of function
> with 0UL parameter.
>
> You can use target_ver for the guest pointer and host_ver for the len,
> guest pointer will be ignored if host pointer is NULL.
>
> You can have a generic function that not copies data in case of error:
>
> static void unlock_drm_strings(struct drm_version *host_ver,
> struct target_drm_version *target_ver,
> int copy)
> {
> unlock_user(host_ver->name, target_ver->name,
> copy ? host_ver->name_len : 0);
> ...
>
>> +
>> +static inline abi_long target_to_host_drmversion(struct drm_version *host_ver,
>> + struct target_drm_version *target_ver)
>> +{
>> + memset(host_ver, 0, sizeof(*host_ver));
>> +
>> + __get_user(host_ver->name_len, &target_ver->name_len);
>> + if (host_ver->name_len) {
>> + host_ver->name = lock_user(VERIFY_WRITE, target_ver->name,
>> + target_ver->name_len, 0);
>> + if (!host_ver->name) {
>> + goto err;
>> + }
>> + }
>> +
>> + __get_user(host_ver->date_len, &target_ver->date_len);
>> + if (host_ver->date_len) {
>> + host_ver->date = lock_user(VERIFY_WRITE, target_ver->date,
>> + target_ver->date_len, 0);
>> + if (!host_ver->date) {
>> + goto err;
>> + }
>> + }
>> +
>> + __get_user(host_ver->desc_len, &target_ver->desc_len);
>> + if (host_ver->desc_len) {
>> + host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc,
>> + target_ver->desc_len, 0);
>> + if (!host_ver->desc) {
>> + goto err;
>> + }
>> + }
>> +
>> + return 0;
>> +err:
>> + unlock_drm_version(host_ver);
>
> unlock_drm_strings(host_ver, target_ver, 0);
>
>> + return -EFAULT;
>> +}
>> +
>> +static inline abi_long host_to_target_drmversion(
>> + struct target_drm_version *target_ver,
>> + struct drm_version *host_ver)
>> +{
>> + __put_user(host_ver->version_major, &target_ver->version_major);
>> + __put_user(host_ver->version_minor, &target_ver->version_minor);
>> + __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel);
>> + __put_user(host_ver->name_len, &target_ver->name_len);
>> + __put_user(host_ver->date_len, &target_ver->date_len);
>> + __put_user(host_ver->desc_len, &target_ver->desc_len);
>> + unlock_user(host_ver->name, target_ver->name, host_ver->name_len);
>> + unlock_user(host_ver->date, target_ver->date, host_ver->date_len);
>> + unlock_user(host_ver->desc, target_ver->desc, host_ver->desc_len);
>
> unlock_drm_strings(host_ver, target_ver, 1);
>
>> + return 0;
>> +}
>> +
>> +static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp,
>> + int fd, int cmd, abi_long arg)
>> +{
>> + struct drm_version *ver;
>> + struct target_drm_version *target_ver;
>> + abi_long ret;
>> +
>> + switch (ie->host_cmd) {
>> + case DRM_IOCTL_VERSION:
>> + if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) {
>> + return -TARGET_EFAULT;
>> + }
>> + ver = (struct drm_version *)buf_temp;
>> + ret = target_to_host_drmversion(ver, target_ver);
>> + if (!is_error(ret)) {
>> + ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver));
>> + if (!is_error(ret)) {
>> + ret = host_to_target_drmversion(target_ver, ver);
>> + }
>> + unlock_drm_version(ver);
>
> } else {
> unlock_drm_strings(host_ver, target_ver, 0);
> }
>
> Thanks,
> Laurent
>
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-06-04 1:45 [PATCH] [PATCH v6] linux-user: syscall: ioctls: support DRM_IOCTL_VERSION chengang
2020-06-04 9:10 ` Laurent Vivier
2020-06-04 10:01 ` Chen Gang
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