Commit Graph

74453 Commits

Author SHA1 Message Date
Michael S. Tsirkin 8347505640 vhost: coding style fix
Drop a trailing whitespace. Make line shorter.

Fixes: 7652511473 ("vhost: Only align sections for vhost-user")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-01-23 02:08:15 -05:00
Filip Bozuta a7b0974667 linux-user: Add support for read/clear RTC voltage low detector using ioctls
This patch implements functionalities of following ioctls:

RTC_VL_READ - Read voltage low detection information

    Read the voltage low for RTCs that support voltage low.
    The third ioctl's' argument points to an int in which
    the voltage low is returned.

RTC_VL_CLR - Clear voltage low information

    Clear the information about voltage low for RTCs that
    support voltage low. The third ioctl(2) argument is
    ignored.

Implementation notes:

    Since one ioctl has a pointer to 'int' as its third agrument,
    and another ioctl has NULL as its third argument, their
    implementation was straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-7-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:21:37 +01:00
Filip Bozuta 373b067ff0 linux-user: Add support for getting/setting RTC PLL correction using ioctls
This patch implements functionalities of following ioctls:

RTC_PLL_GET - Getting PLL correction

    Read the PLL correction for RTCs that support PLL. The PLL correction
    is returned in the following structure:

        struct rtc_pll_info {
            int pll_ctrl;        /* placeholder for fancier control */
            int pll_value;       /* get/set correction value */
            int pll_max;         /* max +ve (faster) adjustment value */
            int pll_min;         /* max -ve (slower) adjustment value */
            int pll_posmult;     /* factor for +ve correction */
            int pll_negmult;     /* factor for -ve correction */
            long pll_clock;      /* base PLL frequency */
        };

    A pointer to this structure should be passed as the third
    ioctl's argument.

RTC_PLL_SET - Setting PLL correction

    Sets the PLL correction for RTCs that support PLL. The PLL correction
    that is set is specified by the rtc_pll_info structure pointed to by
    the third ioctl's' argument.

Implementation notes:

    All ioctls in this patch have a pointer to a structure rtc_pll_info
    as their third argument. All elements of this structure are of
    type 'int', except the last one that is of type 'long'. That is
    the reason why a separate target structure (target_rtc_pll_info)
    is defined in linux-user/syscall_defs. The rest of the
    implementation is straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-6-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:20:51 +01:00
Filip Bozuta abc81bf678 linux-user: Add support for getting/setting RTC wakeup alarm using ioctls
This patch implements functionalities of following ioctls:

RTC_WKALM_SET, RTC_WKALM_GET - Getting/Setting wakeup alarm

    Some RTCs support a more powerful alarm interface, using these
    ioctls to read or write the RTC's alarm time (respectively)
    with this structure:

        struct rtc_wkalrm {
            unsigned char enabled;
            unsigned char pending;
            struct rtc_time time;
        };

    The enabled flag is used to enable or disable the alarm
    interrupt, or to read its current status; when using these
    calls, RTC_AIE_ON and RTC_AIE_OFF are not used. The pending
    flag is used by RTC_WKALM_RD to report a pending interrupt
    (so it's mostly useless on Linux, except when talking to the
    RTC managed by EFI firmware). The time field is as used with
    RTC_ALM_READ and RTC_ALM_SET except that the tm_mday, tm_mon,
    and tm_year fields are also valid. A pointer to this structure
    should be passed as the third ioctl's argument.

Implementation notes:

    All ioctls in this patch have a pointer to a structure
    rtc_wkalrm as their third argument. That is the reason why
    corresponding definition is added in linux-user/syscall_types.h.
    Since all  elements of this structure are either of type
    'unsigned char' or 'struct rtc_time' (that was covered in one
    of previous patches), the rest of the implementation is
    straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-5-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:20:11 +01:00
Filip Bozuta fa857eb570 linux-user: Add support for getting/setting RTC periodic interrupt and epoch using ioctls
This patch implements functionalities of following ioctls:

RTC_IRQP_READ, RTC_IRQP_SET - Getting/Setting IRQ rate

    Read and set the frequency for periodic interrupts, for RTCs
    that support periodic interrupts. The periodic interrupt must
    be separately enabled or disabled using the RTC_PIE_ON,
    RTC_PIE_OFF requests. The third ioctl's argument is an
    unsigned long * or an unsigned long, respectively. The value
    is the frequency in interrupts per second. The set of allow‐
    able frequencies is the multiples of two in the range 2 to
    8192. Only a privileged process (i.e., one having the
    CAP_SYS_RESOURCE capability) can set frequencies above the
    value specified in /proc/sys/dev/rtc/max-user-freq. (This
    file contains the value 64 by default.)

RTC_EPOCH_READ, RTC_EPOCH_SET - Getting/Setting epoch

    Many RTCs encode the year in an 8-bit register which is either
    interpreted as an 8-bit binary number or as a BCD number. In
    both cases, the number is interpreted relative to this RTC's
    Epoch. The RTC's Epoch is initialized to 1900 on most systems
    but on Alpha and MIPS it might also be initialized to 1952,
    1980, or 2000, depending on the value of an RTC register for
    the year. With some RTCs, these operations can be used to
    read or to set the RTC's Epoch, respectively. The third
    ioctl's argument is an unsigned long * or an unsigned long,
    respectively, and the value returned (or assigned) is the
    Epoch. To set the RTC's Epoch the process must be privileged
    (i.e., have the CAP_SYS_TIME capability).

Implementation notes:

    All ioctls in this patch have a pointer to 'ulong' as their
    third argument. That is the reason why corresponding parts
    of added code in linux-user/syscall_defs.h contain special
    handling related to 'ulong' type: they use 'abi_ulong' type
    to make sure that ioctl's code is calculated correctly for
    both 32-bit and 64-bit targets. Also, 'MK_PTR(TYPE_ULONG)'
    is used for the similar reason in linux-user/ioctls.h.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-4-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:19:35 +01:00
Filip Bozuta 178b14a0cd linux-user: Add support for getting/setting RTC time and alarm using ioctls
This patch implements functionalities of following ioctls:

RTC_RD_TIME - Getting RTC time

    Returns this RTC's time in the following structure:

        struct rtc_time {
            int tm_sec;
            int tm_min;
            int tm_hour;
            int tm_mday;
            int tm_mon;
            int tm_year;
            int tm_wday;     /* unused */
            int tm_yday;     /* unused */
            int tm_isdst;    /* unused */
        };

    The fields in this structure have the same meaning and ranges
    as the tm structure described in gmtime man page. A pointer
    to this structure should be passed as the third ioctl's argument.

RTC_SET_TIME - Setting RTC time

    Sets this RTC's time to the time specified by the rtc_time
    structure pointed to by the third ioctl's argument. To set
    the RTC's time the process must be privileged (i.e., have the
    CAP_SYS_TIME capability).

RTC_ALM_READ, RTC_ALM_SET - Getting/Setting alarm time

    Read and set the alarm time, for RTCs that support alarms.
    The alarm interrupt must be separately enabled or disabled
    using the RTC_AIE_ON, RTC_AIE_OFF requests. The third
    ioctl's argument is a pointer to a rtc_time structure. Only
    the tm_sec, tm_min, and tm_hour fields of this structure are
    used.

Implementation notes:

    All ioctls in this patch have pointer to a structure rtc_time
    as their third argument. That is the reason why corresponding
    definition is added in linux-user/syscall_types.h. Since all
    elements of this structure are of type 'int', the rest of the
    implementation is straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-3-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:18:54 +01:00
Filip Bozuta 68365f969c linux-user: Add support for enabling/disabling RTC features using ioctls
This patch implements functionalities of following ioctls:

RTC_AIE_ON, RTC_AIE_OFF - Alarm interrupt enabling on/off

    Enable or disable the alarm interrupt, for RTCs that support
    alarms.  The third ioctl's argument is ignored.

RTC_UIE_ON, RTC_UIE_OFF - Update interrupt enabling on/off

    Enable or disable the interrupt on every clock update, for
    RTCs that support this once-per-second interrupt. The third
    ioctl's argument is ignored.

RTC_PIE_ON, RTC_PIE_OFF - Periodic interrupt enabling on/off

    Enable or disable the periodic interrupt, for RTCs that sup‐
    port these periodic interrupts. The third ioctl's argument
    is ignored. Only a privileged process (i.e., one having the
    CAP_SYS_RESOURCE capability) can enable the periodic interrupt
    if the frequency is currently set above the value specified in
    /proc/sys/dev/rtc/max-user-freq.

RTC_WIE_ON, RTC_WIE_OFF - Watchdog interrupt enabling on/off

    Enable or disable the Watchdog interrupt, for RTCs that sup-
    port this Watchdog interrupt. The third ioctl's argument is
    ignored.

Implementation notes:

    Since all of involved ioctls have NULL as their third argument,
    their implementation was straightforward.

    The line '#include <linux/rtc.h>' was added to recognize
    preprocessor definitions for these ioctls. This needs to be
    done only once in this series of commits. Also, the content
    of this file (with respect to ioctl definitions) remained
    unchanged for a long time, therefore there is no need to
    worry about supporting older Linux kernel version.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-2-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:18:21 +01:00
Filip Bozuta c858e537a9 linux-user: Add support for TYPE_LONG and TYPE_ULONG in do_ioctl()
Function "do_ioctl()" located in file "syscall.c" was missing
an option for TYPE_LONG and TYPE_ULONG. This caused some ioctls
to not be recognised because they had the third argument that was
of type 'long' or 'unsigned long'.

For example:

Since implemented ioctls RTC_IRQP_SET and RTC_EPOCH_SET
are of type IOW(writing type) that have unsigned long as
their third argument, they were not recognised in QEMU
before the changes of this patch.

Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1579117007-7565-14-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:17:28 +01:00
Aleksandar Markovic f7dbd8fe56 linux-user: Add support for KCOV_INIT_TRACE ioctl
KCOV_INIT_TRACE ioctl plays the role in kernel coverage tracing.
This ioctl's third argument is of type 'unsigned long', and the
implementation in QEMU is straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579214991-19602-13-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:15:51 +01:00
Aleksandar Markovic bd27e675d3 linux-user: Add support for KCOV_<ENABLE|DISABLE> ioctls
KCOV_ENABLE and KCOV_DISABLE play the role in kernel coverage
tracing. These ioctls do not use the third argument of ioctl()
system call and are straightforward to implement in QEMU.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579214991-19602-12-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:15:18 +01:00
Aleksandar Markovic db37dd89d6 configure: Detect kcov support and introduce CONFIG_KCOV
kcov is kernel code coverage tracing tool. It requires kernel 4.4+
compiled with certain kernel options.

This patch checks if kcov header "sys/kcov.h" is present on build
machine, and stores the result in variable CONFIG_KCOV, meant to
be used in linux-user code related to the support for three ioctls
that were introduced at the same time as the mentioned header
(their definition was a part of the first version of that header).

Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1579214991-19602-11-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:14:45 +01:00
Aleksandar Markovic 08e3ce59fc linux-user: Add support for FDFMT<BEG|TRK|END> ioctls
FDFMTBEG, FDFMTTRK, and FDFMTEND ioctls provide means for controlling
formatting of a floppy drive.

FDFMTTRK's third agrument is a pointer to the structure:

struct format_descr {
    unsigned int device,head,track;
};

defined in Linux kernel header <linux/fd.h>.

Since all fields of the structure are of type 'unsigned int', there is
no need to define "target_format_descr".

FDFMTBEG and FDFMTEND ioctls do not use the third argument.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579214991-19602-9-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:13:49 +01:00
Aleksandar Markovic 81eb1a369d linux-user: Add support for FD<SETEMSGTRESH|SETMAXERRS|GETMAXERRS> ioctls
FDSETEMSGTRESH, FDSETMAXERRS, and FDGETMAXERRS ioctls are commands
for controlling error reporting of a floppy drive.

FDSETEMSGTRESH's third agrument is a pointer to the structure:

struct floppy_max_errors {
    unsigned int
      abort,      /* number of errors to be reached before aborting */
      read_track, /* maximal number of errors permitted to read an
                   * entire track at once */
      reset,      /* maximal number of errors before a reset is tried */
      recal,      /* maximal number of errors before a recalibrate is
                   * tried */
      /*
       * Threshold for reporting FDC errors to the console.
       * Setting this to zero may flood your screen when using
       * ultra cheap floppies ;-)
       */
      reporting;
};

defined in Linux kernel header <linux/fd.h>.

Since all fields of the structure are of type 'unsigned int', there is
no need to define "target_floppy_max_errors".

FDSETMAXERRS and FDGETMAXERRS ioctls do not use the third argument.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579214991-19602-8-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:13:13 +01:00
Aleksandar Markovic 0d899cd61a linux-user: Add support for FS_IOC32_<GET|SET>VERSION ioctls
These FS_IOC32_<GET|SET>VERSION ioctls are identical to
FS_IOC_<GET|SET>VERSION ioctls, but without the anomaly of their
number defined as if their third argument is of type long, while
it is treated internally in kernel as is of type int.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579214991-19602-4-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:06:48 +01:00
Aleksandar Markovic 0b471ba698 linux-user: Add support for FS_IOC32_<GET|SET>FLAGS ioctls
These FS_IOC32_<GET|SET>FLAGS ioctls are identical to
FS_IOC_<GET|SET>FLAGS ioctls, but without the anomaly of their
number defined as if their third argument is of type long, while
it is treated internally in kernel as is of type int.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579214991-19602-3-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:06:12 +01:00
Aleksandar Markovic 5ae774a91f linux-user: Add support for FS_IOC_<GET|SET>VERSION ioctls
A very specific thing for these two ioctls is that their code
implies that their third argument is of type 'long', but the
kernel uses that argument as if it is of type 'int'. This anomaly
is recognized also in commit 6080723 (linux-user: Implement
FS_IOC_GETFLAGS and FS_IOC_SETFLAGS ioctls).

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579214991-19602-2-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:04:09 +01:00
Richard Henderson 6fd5944980 linux-user: Reserve space for brk
With bad luck, we can wind up with no space at all for brk,
which will generally cause the guest malloc to fail.

This bad luck is easier to come by with ET_DYN (PIE) binaries,
where either the stack or the interpreter (ld.so) gets placed
immediately after the main executable.

But there's nothing preventing this same thing from happening
with ET_EXEC (normal) binaries, during probe_guest_base().

In both cases, reserve some extra space via mmap and release
it back to the system after loading the interpreter and
allocating the stack.

The choice of 16MB is somewhat arbitrary.  It's enough for libc
to get going, but without being so large that 32-bit guests or
32-bit hosts are in danger of running out of virtual address space.
It is expected that libc will be able to fall back to mmap arenas
after the limited brk space is exhausted.

Launchpad: https://bugs.launchpad.net/qemu/+bug/1749393
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200117230245.5040-1-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 15:00:03 +01:00
Xinyu Li 91c8bdb1e6 linux-user:Fix align mistake when mmap guest space
In init_guest_space, we need to mmap guest space. If the return address
of first mmap is not aligned with align, which was set to MAX(SHMLBA,
qemu_host_page_size), we need unmap and a new mmap(space is larger than
first size). The new size is named real_size, which is aligned_size +
qemu_host_page_size. alugned_size is the guest space size. And add a
qemu_host_page_size to avoid memory error when we align real_start
manually (ROUND_UP(real_start, align)). But when SHMLBA >
qemu_host_page_size, the added size will smaller than the size to align,
which can make a mistake(in a mips machine, it appears). So change
real_size from aligned_size +qemu_host_page_size
to aligned_size + align will solve it.

Signed-off-by: Xinyu Li <precinct@mail.ustc.edu.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20191213022919.5934-1-precinct@mail.ustc.edu.cn>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22 14:59:22 +01:00
Corey Minyard aefcaf9d1b i386:acpi: Remove _HID from the SMBus ACPI entry
Per the ACPI spec (version 6.1, section 6.1.5 _HID) it is not required
on enumerated buses (like PCI in this case), _ADR is required (and is
already there).  And the _HID value is wrong.  Linux appears to ignore
the _HID entry, but Windows 10 detects it as 'Unknown Device' and there
is no driver available.  See https://bugs.launchpad.net/qemu/+bug/1856724

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200120170725.24935-6-minyard@acm.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-01-22 01:47:55 -05:00
Dr. David Alan Gilbert 7652511473 vhost: Only align sections for vhost-user
I added hugepage alignment code in c1ece84e7c to deal with
vhost-user + postcopy which needs aligned pages when using userfault.
However, on x86 the lower 2MB of address space tends to be shotgun'd
with small fragments around the 512-640k range - e.g. video RAM, and
with HyperV synic pages tend to sit around there - again splitting
it up.  The alignment code complains with a 'Section rounded to ...'
error and gives up.

Since vhost-user already filters out devices without an fd
(see vhost-user.c vhost_user_mem_section_filter) it shouldn't be
affected by those overlaps.

Turn the alignment off on vhost-kernel so that it doesn't try
and align, and thus won't hit the rounding issues.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20200116202414.157959-3-dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2020-01-22 00:50:03 -05:00
Dr. David Alan Gilbert ff4776147e vhost: Add names to section rounded warning
Add the memory region names to section rounding/alignment
warnings.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20200116202414.157959-2-dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-01-22 00:50:03 -05:00
Pan Nengyuan e1932cf914 vhost-vsock: delete vqs in vhost_vsock_unrealize to avoid memleaks
Receive/transmit/event vqs forgot to cleanup in vhost_vsock_unrealize. This
patch save receive/transmit vq pointer in realize() and cleanup vqs
through those vq pointers in unrealize(). The leak stack is as follow:

Direct leak of 21504 byte(s) in 3 object(s) allocated from:
   0x7f86a1356970 (/lib64/libasan.so.5+0xef970)  ??:?
   0x7f86a09aa49d (/lib64/libglib-2.0.so.0+0x5249d)  ??:?
   0x5604852f85ca (./x86_64-softmmu/qemu-system-x86_64+0x2c3e5ca)  /mnt/sdb/qemu/hw/virtio/virtio.c:2333
   0x560485356208 (./x86_64-softmmu/qemu-system-x86_64+0x2c9c208)  /mnt/sdb/qemu/hw/virtio/vhost-vsock.c:339
   0x560485305a17 (./x86_64-softmmu/qemu-system-x86_64+0x2c4ba17)  /mnt/sdb/qemu/hw/virtio/virtio.c:3531
   0x5604858e6b65 (./x86_64-softmmu/qemu-system-x86_64+0x322cb65)  /mnt/sdb/qemu/hw/core/qdev.c:865
   0x5604861e6c41 (./x86_64-softmmu/qemu-system-x86_64+0x3b2cc41)  /mnt/sdb/qemu/qom/object.c:2102

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-Id: <20200115062535.50644-1-pannengyuan@huawei.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-01-22 00:23:07 -05:00
Pan Nengyuan 2feff67c4e virtio-scsi: convert to new virtio_delete_queue
Use virtio_delete_queue to make it more clear.

Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-Id: <20200117075547.60864-3-pannengyuan@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-01-22 00:23:07 -05:00
Pan Nengyuan dd958f9ef4 virtio-scsi: delete vqs in unrealize to avoid memleaks
This patch fix memleaks when attaching/detaching virtio-scsi device, the
memory leak stack is as follow:

Direct leak of 21504 byte(s) in 3 object(s) allocated from:
   0x7f491f2f2970 (/lib64/libasan.so.5+0xef970)  ??:?
   0x7f491e94649d (/lib64/libglib-2.0.so.0+0x5249d)  ??:?
   0x564d0f3919fa (./x86_64-softmmu/qemu-system-x86_64+0x2c3e9fa)  /mnt/sdb/qemu/hw/virtio/virtio.c:2333
   0x564d0f2eca55 (./x86_64-softmmu/qemu-system-x86_64+0x2b99a55)  /mnt/sdb/qemu/hw/scsi/virtio-scsi.c:912
   0x564d0f2ece7b (./x86_64-softmmu/qemu-system-x86_64+0x2b99e7b)  /mnt/sdb/qemu/hw/scsi/virtio-scsi.c:924
   0x564d0f39ee47 (./x86_64-softmmu/qemu-system-x86_64+0x2c4be47)  /mnt/sdb/qemu/hw/virtio/virtio.c:3531
   0x564d0f980224 (./x86_64-softmmu/qemu-system-x86_64+0x322d224)  /mnt/sdb/qemu/hw/core/qdev.c:865

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-Id: <20200117075547.60864-2-pannengyuan@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-01-22 00:23:07 -05:00
Pan Nengyuan ad30a9e904 virtio-9p-device: convert to new virtio_delete_queue
Use virtio_delete_queue to make it more clear.

Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-Id: <20200117060927.51996-3-pannengyuan@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
2020-01-22 00:23:07 -05:00
Pan Nengyuan 9580d60e66 virtio-9p-device: fix memleak in virtio_9p_device_unrealize
v->vq forgot to cleanup in virtio_9p_device_unrealize, the memory leak
stack is as follow:

Direct leak of 14336 byte(s) in 2 object(s) allocated from:
   0x7f819ae43970 (/lib64/libasan.so.5+0xef970)  ??:?
   0x7f819872f49d (/lib64/libglib-2.0.so.0+0x5249d)  ??:?
   0x55a3a58da624 (./x86_64-softmmu/qemu-system-x86_64+0x2c14624)  /mnt/sdb/qemu/hw/virtio/virtio.c:2327
   0x55a3a571bac7 (./x86_64-softmmu/qemu-system-x86_64+0x2a55ac7)  /mnt/sdb/qemu/hw/9pfs/virtio-9p-device.c:209
   0x55a3a58e7bc6 (./x86_64-softmmu/qemu-system-x86_64+0x2c21bc6)  /mnt/sdb/qemu/hw/virtio/virtio.c:3504
   0x55a3a5ebfb37 (./x86_64-softmmu/qemu-system-x86_64+0x31f9b37)  /mnt/sdb/qemu/hw/core/qdev.c:876

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-Id: <20200117060927.51996-2-pannengyuan@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Acked-by: Greg Kurz <groug@kaod.org>
2020-01-22 00:23:07 -05:00
Michael S. Tsirkin 3c2ab5593b bios-tables-test: document expected file update
Document the flow for the case where contributor
updates the expected files.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-01-22 00:23:07 -05:00
Igor Mammedov 3a61c8db9d acpi: cpuhp: add CPHP_GET_CPU_ID_CMD command
Firmware can enumerate present at boot APs by broadcasting wakeup IPI,
so that woken up secondary CPUs could register them-selves.
However in CPU hotplug case, it would need to know architecture
specific CPU IDs for possible and hotplugged CPUs so it could
prepare environment for and wake hotplugged AP.

Reuse and extend existing CPU hotplug interface to return architecture
specific ID for currently selected CPU in 2 registers:
 - lower 32 bits in ACPI_CPU_CMD_DATA_OFFSET_RW
 - upper 32 bits in ACPI_CPU_CMD_DATA2_OFFSET_R

On x86, firmware will use CPHP_GET_CPU_ID_CMD for fetching the APIC ID
when handling hotplug SMI.

Later, CPHP_GET_CPU_ID_CMD will be used on ARM to retrieve MPIDR,
which serves the similar to APIC ID purpose.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1575896942-331151-10-git-send-email-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2020-01-22 00:23:07 -05:00
Igor Mammedov ae340aa3d2 acpi: cpuhp: spec: add typical usecases
Document work-flows for
  * enabling/detecting modern CPU hotplug interface
  * finding a CPU with pending 'insert/remove' event
  * enumerating present and possible CPUs

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1575896942-331151-9-git-send-email-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2020-01-22 00:23:07 -05:00
Igor Mammedov e6d0c3ce68 acpi: cpuhp: introduce 'Command data 2' field
No functional change in practice, patch only aims to properly
document (in spec and code) intended usage of the reserved space.

The new field is to be used for 2 purposes:
  - detection of modern CPU hotplug interface using
    CPHP_GET_NEXT_CPU_WITH_EVENT_CMD command.
    procedure will be described in follow up patch:
      "acpi: cpuhp: spec: add typical usecases"
  - for returning upper 32 bits of architecture specific CPU ID,
    for new CPHP_GET_CPU_ID_CMD command added by follow up patch:
      "acpi: cpuhp: add CPHP_GET_CPU_ID_CMD command"

Change is backward compatible with 4.2 and older machines, as field was
unconditionally reserved and always returned 0x0 if modern CPU hotplug
interface was enabled.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1575896942-331151-8-git-send-email-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2020-01-22 00:23:07 -05:00
Igor Mammedov 5b8e5363fa acpi: cpuhp: spec: clarify store into 'Command data' when 'Command field' == 0
Write section of 'Command data' register should describe what happens
when it's written into. Correct description in case the last stored
'Command field' value is equal to 0, to reflect that currently it's not
supported.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <1575896942-331151-7-git-send-email-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-01-22 00:23:07 -05:00
Igor Mammedov 1c1d43bf01 acpi: cpuhp: spec: fix 'Command data' description
Correct returned value description in case 'Command field' == 0x0,
it's not PXM but CPU selector value with pending event

In addition describe 0 blanket value in case of not supported
'Command field' value.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <1575896942-331151-6-git-send-email-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-01-22 00:23:07 -05:00
Igor Mammedov 1d7a52835d acpi: cpuhp: spec: clarify 'CPU selector' register usage and endianness
* Move reserved registers to the top of the section, so reader would be
  aware of effects when reading registers description.
* State registers endianness explicitly at the beginning of the section
* Describe registers behavior in case of 'CPU selector' register contains
  value that doesn't point to a possible CPU.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <1575896942-331151-5-git-send-email-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-01-22 00:23:07 -05:00
Igor Mammedov 0cdd3eae15 tests: q35: MCH: add default SMBASE SMRAM lock test
test lockable SMRAM at default SMBASE feature, introduced by
patch "q35: implement 128K SMRAM at default SMBASE address"

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1575899217-333105-1-git-send-email-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-01-22 00:23:07 -05:00
Igor Mammedov f404220e27 q35: implement 128K SMRAM at default SMBASE address
It's not what real HW does, implementing which would be overkill [**]
and would require complex cross stack changes (QEMU+firmware) to make
it work.
So considering that SMRAM is owned by MCH, for simplicity (ab)use
reserved Q35 register, which allows QEMU and firmware easily init
and make RAM at SMBASE available only from SMM context.

Patch uses commit (2f295167e0 q35/mch: implement extended TSEG sizes)
for inspiration and uses reserved register in config space at 0x9c
offset [*] to extend q35 pci-host with ability to use 128K at
0x30000 as SMRAM and hide it (like TSEG) from non-SMM context.

Usage:
  1: write 0xff in the register
  2: if the feature is supported, follow up read from the register
     should return 0x01. At this point RAM at 0x30000 is still
     available for SMI handler configuration from non-SMM context
  3: writing 0x02 in the register, locks SMBASE area, making its contents
     available only from SMM context. In non-SMM context, reads return
     0xff and writes are ignored. Further writes into the register are
     ignored until the system reset.

*) https://www.mail-archive.com/qemu-devel@nongnu.org/msg455991.html
**) https://www.mail-archive.com/qemu-devel@nongnu.org/msg646965.html

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1575896942-331151-3-git-send-email-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
2020-01-22 00:23:07 -05:00
Philippe Mathieu-Daudé 75fa376cda scripts/git.orderfile: Display decodetree before C source
To avoid scrolling each instruction when reviewing tcg
helpers written for the decodetree script, display the
.decode files (similar to header declarations) before
the C source (implementation of previous declarations).

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20191230082856.30556-1-philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 15:26:09 -10:00
Richard Henderson 3c3959f2d9 cputlb: Hoist timestamp outside of loops over tlbs
Do not call get_clock_realtime() in tlb_mmu_resize_locked,
but hoist outside of any loop over a set of tlbs.  This is
only two (indirect) callers, tlb_flush_by_mmuidx_async_work
and tlb_flush_page_locked, so not onerous.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:21:59 -10:00
Richard Henderson 3c16304af4 cputlb: Initialize tlbs as flushed
There's little point in leaving these data structures half initialized,
and relying on a flush to be done during reset.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:21:59 -10:00
Richard Henderson 56e89f76fd cputlb: Partially merge tlb_dyn_init into tlb_init
Merge into the only caller, but at the same time split
out tlb_mmu_init to initialize a single tlb entry.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:21:59 -10:00
Richard Henderson bbf021b04a cputlb: Split out tlb_mmu_flush_locked
We will want to be able to flush a tlb without resizing.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:21:59 -10:00
Richard Henderson 5c948e3175 cputlb: Hoist tlb portions in tlb_flush_one_mmuidx_locked
No functional change, but the smaller expressions make
the code easier to read.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:21:59 -10:00
Richard Henderson 71ccd47ba5 cputlb: Hoist tlb portions in tlb_mmu_resize_locked
No functional change, but the smaller expressions make
the code easier to read.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:21:59 -10:00
Richard Henderson 722a1c1e97 cputlb: Pass CPUTLBDescFast to tlb_n_entries and sizeof_tlb
We do not need the entire CPUArchState to compute these values.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:21:59 -10:00
Richard Henderson 7a1efe1b97 cputlb: Make tlb_n_entries private to cputlb.c
There are no users of this function outside cputlb.c,
and its interface will change in the next patch.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:21:59 -10:00
Richard Henderson f1293145d6 cputlb: Merge tlb_table_flush_by_mmuidx into tlb_flush_one_mmuidx_locked
There is only one caller for tlb_table_flush_by_mmuidx.  Place
the result at the earlier line number, due to an expected user
in the near future.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:21:59 -10:00
Richard Henderson 755ee1f301 vl: Only choose enabled accelerators in configure_accelerators
By choosing "tcg:kvm" when kvm is not enabled, we generate
an incorrect warning: "invalid accelerator kvm".

At the same time, use g_str_has_suffix rather than open-coding
the same operation.

Presumably the inverse is also true with --disable-tcg.

Fixes: 28a0961757
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:18:24 -10:00
Richard Henderson a024b09067 vl: Remove useless test in configure_accelerators
The result of g_strsplit is never NULL.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:18:24 -10:00
Richard Henderson 60ee355276 vl: Reduce scope of variables in configure_accelerators
The accel_list and tmp variables are only used when manufacturing
-machine accel, options based on -accel.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:18:24 -10:00
Richard Henderson 7970dc12e9 vl: Remove unused variable in configure_accelerators
The accel_initialised variable no longer has any setters.

Fixes: 6f6e1698a6
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:18:24 -10:00
Carlos Santos 00b5032ead util/cacheinfo: fix crash when compiling with uClibc
uClibc defines _SC_LEVEL1_ICACHE_LINESIZE and _SC_LEVEL1_DCACHE_LINESIZE
but the corresponding sysconf calls returns -1, which is a valid result,
meaning that the limit is indeterminate.

Handle this situation using the fallback values instead of crashing due
to an assertion failure.

Signed-off-by: Carlos Santos <casantos@redhat.com>
Message-Id: <20191017123713.30192-1-casantos@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-01-21 14:18:12 -10:00