Displaying 20 results from an estimated 83 matches for "is_writ".
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is_write
2012 Aug 02
0
[PATCH 3/3] ALPHA: implement and use rdwr_bytes
...insertions(+), 11 deletions(-)
diff --git a/core/fs/diskio.c b/core/fs/diskio.c
index 6683816..7e58d6f 100644
--- a/core/fs/diskio.c
+++ b/core/fs/diskio.c
@@ -265,6 +265,80 @@ static int edd_rdwr_sectors(struct disk *disk, void *buf,
return done;
}
+#define rdwr_sectors0(buf, lba, count, is_write) \
+ disk->rdwr_sectors(disk, buf, lba, count, is_write)
+/*
+ * Read a range of bytes
+ */
+int rdwr_bytes(struct disk *disk, void *buf,
+ bytes_t lba, size_t count, bool is_write)
+{
+ int done, res;
+ unsigned mask, before, len;
+ unsigned shift = disk->sector_shift;
+
+...
2012 Jul 23
2
[PATCH V2] qemu-xen-traditionnal, Fix dirty logging during migration.
...TARGET_PAGE_BITS)
- - (addr >> TARGET_PAGE_BITS));
return qemu_map_cache(addr, 1);
}
@@ -835,6 +831,6 @@ void *cpu_physical_memory_map(target_phys_addr_t addr,
void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
int is_write, target_phys_addr_t access_len)
{
- qemu_invalidate_entry(buffer);
+ qemu_invalidate_entry(buffer, access_len, is_write);
cpu_notify_map_clients();
}
diff --git a/qemu-xen.h b/qemu-xen.h
index d50c89f..54159bf 100644
--- a/qemu-xen.h
+++ b/qemu-xen.h
@@ -28,7 +28,7 @@ extern int vga_r...
2011 Jun 17
3
[LLVMdev] LLVM-based address sanity checker
...or whatever reason we can not use SIGILL.
Default (use ud2):
402ed5: 48 89 d8 mov %rbx,%rax << move the
address to rax
402ed8: 0f 0b ud2a << crash
402eda: 52 push %rdx << encode is_write
and size in the opcode
(note: with a good disassembler and some work we can leave just ud2 or
equivalent)
-mllvm -asan-use-call
402ed5: 48 89 df mov %rbx,%rdi << address is the
paremeter to __asan_report_error_2
402ed8: e8 53 69 00 00 callq 40983...
2012 Apr 07
0
[PATCH 05/14] kvm tools: Add virtio-mmio support
...ct kvm *kvm, struct virtio_device *vdev)
+{
+ struct virtio_mmio *vmmio = vdev->virtio;
+
+ vmmio->hdr.interrupt_state |= VIRTIO_MMIO_INT_CONFIG;
+ kvm__irq_trigger(vmmio->kvm, vmmio->irq);
+
+ return 0;
+}
+
+static void virtio_mmio_device_specific(u64 addr, u8 *data, u32 len,
+ u8 is_write, struct virtio_device *vdev)
+{
+ struct virtio_mmio *vmmio = vdev->virtio;
+ u32 i;
+
+ for (i = 0; i < len; i++) {
+ if (is_write)
+ vdev->ops->set_config(vmmio->kvm, vmmio->dev,
+ *(u8 *)data + i, addr + i);
+ else
+ data[i] = vdev->ops->get_config(vmmio-...
2012 Apr 07
0
[PATCH 05/14] kvm tools: Add virtio-mmio support
...ct kvm *kvm, struct virtio_device *vdev)
+{
+ struct virtio_mmio *vmmio = vdev->virtio;
+
+ vmmio->hdr.interrupt_state |= VIRTIO_MMIO_INT_CONFIG;
+ kvm__irq_trigger(vmmio->kvm, vmmio->irq);
+
+ return 0;
+}
+
+static void virtio_mmio_device_specific(u64 addr, u8 *data, u32 len,
+ u8 is_write, struct virtio_device *vdev)
+{
+ struct virtio_mmio *vmmio = vdev->virtio;
+ u32 i;
+
+ for (i = 0; i < len; i++) {
+ if (is_write)
+ vdev->ops->set_config(vmmio->kvm, vmmio->dev,
+ *(u8 *)data + i, addr + i);
+ else
+ data[i] = vdev->ops->get_config(vmmio-...
2019 Oct 04
1
Re: [nbdkit PATCH 2/5] retry: Check size before transactions
...lters/retry/retry.c
> @@ -148,6 +148,17 @@ struct retry_data {
> int delay; /* Seconds to wait before retrying. */
> };
>
> +static bool
> +valid_range (struct nbdkit_next_ops *next_ops, void *nxdata,
> + uint32_t count, uint64_t offset, bool is_write, int *err)
> +{
> + if ((int64_t) offset + count > next_ops->get_size (nxdata)) {
> + *err = is_write ? ENOSPC : EIO;
> + return false;
> + }
> + return true;
> +}
> +
> static bool
> do_retry (struct retry_handle *h,
> struct retry_data...
2014 Jul 10
3
[LLVMdev] Proposal: ASan debugging API
...gn) reported, returns the pc, bp, sp,
// address, access type, access type and bug description, and the return
// value of the function is 1. If no error occurred yet, returns 0.
int __asan_get_report_data(void **pc, void **bp, void **sp, void **addr,
int *is_write, size_t *access_size,
char **bug_description);
// Address/memory type from ASan's point of view.
typedef enum {
__ADDRESS_TYPE_UNKNOWN,
__ADDRESS_TYPE_SHADOW_LOW,
__ADDRESS_TYPE_SHADOW_GAP,
__ADDRESS_TYPE_SHADOW_HIGH,
__ADDR...
2011 Jun 21
0
[LLVMdev] LLVM-based address sanity checker
...SIGILL.
>
> Default (use ud2):
> 402ed5: 48 89 d8 mov %rbx,%rax << move the
> address to rax
> 402ed8: 0f 0b ud2a << crash
> 402eda: 52 push %rdx << encode
> is_write and size in the opcode
> (note: with a good disassembler and some work we can leave just ud2 or
> equivalent)
>
> -mllvm -asan-use-call
> 402ed5: 48 89 df mov %rbx,%rdi << address is the
> paremeter to __asan_report_error_2
> 402ed8: e8...
2011 Nov 15
2
[RFC] kvm tools: Add support for virtio-mmio
...ruct kvm *kvm, struct virtio_trans *vtrans)
+{
+ struct virtio_mmio *vmmio = vtrans->virtio;
+
+ vmmio->hdr.interrupt_state |= VIRTIO_MMIO_INT_CONFIG;
+ kvm__irq_trigger(vmmio->kvm, vmmio->irq);
+
+ return 0;
+}
+
+static void virtio_mmio__device_specific(u64 addr, u8 *data, u32 len, u8 is_write,
+ struct virtio_trans *vtrans)
+{
+ struct virtio_mmio *vmmio = vtrans->virtio;
+ u32 i;
+
+ for (i = 0; i < len; i++) {
+ if (is_write)
+ vtrans->virtio_ops->set_config(vmmio->kvm, vmmio->dev,
+ *(u8 *)data + i, addr + i);
+ else
+ data[i] =
+ vtrans->virt...
2011 Nov 15
2
[RFC] kvm tools: Add support for virtio-mmio
...ruct kvm *kvm, struct virtio_trans *vtrans)
+{
+ struct virtio_mmio *vmmio = vtrans->virtio;
+
+ vmmio->hdr.interrupt_state |= VIRTIO_MMIO_INT_CONFIG;
+ kvm__irq_trigger(vmmio->kvm, vmmio->irq);
+
+ return 0;
+}
+
+static void virtio_mmio__device_specific(u64 addr, u8 *data, u32 len, u8 is_write,
+ struct virtio_trans *vtrans)
+{
+ struct virtio_mmio *vmmio = vtrans->virtio;
+ u32 i;
+
+ for (i = 0; i < len; i++) {
+ if (is_write)
+ vtrans->virtio_ops->set_config(vmmio->kvm, vmmio->dev,
+ *(u8 *)data + i, addr + i);
+ else
+ data[i] =
+ vtrans->virt...
2009 Oct 27
2
[PATCH 3/4] scsi-disk: Factor out SCSI command emulation
...nt32_t tag,
- uint8_t *buf, int lun)
+static int scsi_check_cdb_len(uint8_t *cdb, uint32_t *datalen, uint64_t *lba)
{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
- uint64_t nb_sectors;
- uint64_t lba;
- uint32_t len;
- int cmdlen;
- int is_write;
- uint8_t command;
- uint8_t *outbuf;
- SCSIRequest *r;
+ int cmdlen = 0;
- command = buf[0];
- r = scsi_find_request(s, tag);
- if (r) {
- BADF("Tag 0x%x already in use\n", tag);
- scsi_cancel_io(d, tag);
- }
- /* ??? Tags are not unique for d...
2009 Oct 27
2
[PATCH 3/4] scsi-disk: Factor out SCSI command emulation
...nt32_t tag,
- uint8_t *buf, int lun)
+static int scsi_check_cdb_len(uint8_t *cdb, uint32_t *datalen, uint64_t *lba)
{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
- uint64_t nb_sectors;
- uint64_t lba;
- uint32_t len;
- int cmdlen;
- int is_write;
- uint8_t command;
- uint8_t *outbuf;
- SCSIRequest *r;
+ int cmdlen = 0;
- command = buf[0];
- r = scsi_find_request(s, tag);
- if (r) {
- BADF("Tag 0x%x already in use\n", tag);
- scsi_cancel_io(d, tag);
- }
- /* ??? Tags are not unique for d...
2019 Oct 04
0
[nbdkit PATCH 2/5] retry: Check size before transactions
...-- a/filters/retry/retry.c
+++ b/filters/retry/retry.c
@@ -148,6 +148,17 @@ struct retry_data {
int delay; /* Seconds to wait before retrying. */
};
+static bool
+valid_range (struct nbdkit_next_ops *next_ops, void *nxdata,
+ uint32_t count, uint64_t offset, bool is_write, int *err)
+{
+ if ((int64_t) offset + count > next_ops->get_size (nxdata)) {
+ *err = is_write ? ENOSPC : EIO;
+ return false;
+ }
+ return true;
+}
+
static bool
do_retry (struct retry_handle *h,
struct retry_data *data,
@@ -204,6 +215,8 @@ retry_pread (struct nbdkit_...
2019 Mar 25
1
[RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted
On Sat, Mar 23, 2019 at 05:01:35PM -0400, Michael S. Tsirkin wrote:
> On Thu, Mar 21, 2019 at 09:05:04PM -0300, Thiago Jung Bauermann wrote:
> > Michael S. Tsirkin <mst at redhat.com> writes:
[snip]
> > >> > Is there any justification to doing that beyond someone putting
> > >> > out slow code in the past?
> > >>
> > >> The
2012 Sep 10
19
Initial support for sector size >512
This set of patches add some support for sector size >512.
Currently it fixes extlinux, MBR for GPT and ext partitions.
Other code is unaffected.
This set of patches has been tested on a read Dell machine running a beta
firmware.
2013 Nov 25
0
QEMU dies on any attempt to load a Linux kernel module when using a 9P rootfs
...ial stdio -fsdev
> local,id=root,path=/mnt/test,security_model=none -device
> virtio-9p-pci,fsdev=root,mount_tag=/dev/root
>
> Here is a backtrace of QEMU itself that I obtained using gdb:
>
> Breakpoint 1, virtqueue_map_sg (sg=0x7f695b797b98, addr=0x7f695b793b98,
> num_sg=3, is_write=1) at
> /usr/src/debug/app-emulation/qemu-9999/qemu-9999/hw/virtio/virtio.c:434
> 434 error_report("virtio: trying to map MMIO memory");
> (gdb) bt
> #0 virtqueue_map_sg (sg=0x7f695b797b98, addr=0x7f695b793b98, num_sg=3,
> is_write=1) at
> /usr/src/debu...
2014 Oct 07
0
[PATCH RFC 07/11] dataplane: allow virtio-1 devices
...ng *vring)
}
-static int get_desc(Vring *vring, VirtQueueElement *elem,
+static int get_desc(VirtIODevice *vdev, Vring *vring, VirtQueueElement *elem,
struct vring_desc *desc)
{
unsigned *num;
struct iovec *iov;
hwaddr *addr;
MemoryRegion *mr;
+ int is_write = virtio_tswap16(vdev, desc->flags) & VRING_DESC_F_WRITE;
+ uint32_t len = virtio_tswap32(vdev, desc->len);
+ uint64_t desc_addr = virtio_tswap64(vdev, desc->addr);
- if (desc->flags & VRING_DESC_F_WRITE) {
+ if (is_write) {
num = &elem->in_num;...
2014 Oct 07
0
[PATCH RFC 07/11] dataplane: allow virtio-1 devices
...ng *vring)
}
-static int get_desc(Vring *vring, VirtQueueElement *elem,
+static int get_desc(VirtIODevice *vdev, Vring *vring, VirtQueueElement *elem,
struct vring_desc *desc)
{
unsigned *num;
struct iovec *iov;
hwaddr *addr;
MemoryRegion *mr;
+ int is_write = virtio_tswap16(vdev, desc->flags) & VRING_DESC_F_WRITE;
+ uint32_t len = virtio_tswap32(vdev, desc->len);
+ uint64_t desc_addr = virtio_tswap64(vdev, desc->addr);
- if (desc->flags & VRING_DESC_F_WRITE) {
+ if (is_write) {
num = &elem->in_num;...
2014 Nov 25
0
[PATCH RFC v2 07/12] dataplane: allow virtio-1 devices
...ring *vring, VirtQueueElement *elem,
> +static int get_desc(VirtIODevice *vdev, Vring *vring, VirtQueueElement *elem,
> struct vring_desc *desc)
> {
> unsigned *num;
> struct iovec *iov;
> hwaddr *addr;
> MemoryRegion *mr;
> + int is_write = virtio_tswap16(vdev, desc->flags) & VRING_DESC_F_WRITE;
> + uint32_t len = virtio_tswap32(vdev, desc->len);
> + uint64_t desc_addr = virtio_tswap64(vdev, desc->addr);
>
> - if (desc->flags & VRING_DESC_F_WRITE) {
> + if (is_write) {
> n...
2014 Dec 11
0
[PATCH RFC v6 08/20] dataplane: allow virtio-1 devices
...ng *vring)
}
-static int get_desc(Vring *vring, VirtQueueElement *elem,
+static int get_desc(VirtIODevice *vdev, Vring *vring, VirtQueueElement *elem,
struct vring_desc *desc)
{
unsigned *num;
struct iovec *iov;
hwaddr *addr;
MemoryRegion *mr;
+ int is_write = virtio_tswap16(vdev, desc->flags) & VRING_DESC_F_WRITE;
+ uint32_t len = virtio_tswap32(vdev, desc->len);
+ uint64_t desc_addr = virtio_tswap64(vdev, desc->addr);
- if (desc->flags & VRING_DESC_F_WRITE) {
+ if (is_write) {
num = &elem->in_num;...