From: "Gabriel Somlo"
Each fw_cfg entry of type "file" has an associated 56-char,
nul-terminated ASCII string which represents its name. While
the fw_cfg device doesn't itself impose any specific naming
convention, QEMU developers have traditionally used path name
semantics (i.e. "etc/acpi/rsdp")
From: "Gabriel Somlo"
This patch set makes QEMU fw_cfg blobs available for viewing (read-only)
via SysFS.
Several different architectures supported by QEMU are set up with a
"firmware configuration" (fw_cfg) device, used to pass configuration
"blobs" into the guest by the host running QEMU.
His
scan_dir(fw_cfg_register_file);
+ if (err)
+ goto err_scan;
+
+ /* success */
+ pr_debug("fw_cfg: loaded.\n");
+ return 0;
+
+err_scan:
+ fw_cfg_sysfs_cache_cleanup();
+ sysfs_remove_file(fw_cfg_top_ko, &fw_cfg_rev_attr.attr);
+err_rev:
On Mon, Aug 10, 2015 at 11:30:54AM -0700, Greg KH wrote:
> On Mon, Aug 10, 2015 at 12:31:18PM -0400, Gabriel L. Somlo wrote:
> > From: "Gabriel Somlo"
> >
> > Make fw_cfg entries of type "file" available via sysfs. Entries
> > are listed under /
On Mon, Aug 10, 2015 at 11:54:00AM -0700, Greg KH wrote:
> On Mon, Aug 10, 2015 at 02:43:10PM -0400, Gabriel L. Somlo wrote:
> > On Mon, Aug 10, 2015 at 11:33:04AM -0700, Greg KH wrote:
> > > On Mon, Aug 10, 2015 at 12:31:19PM -0400, Gabriel L. Somlo wrote:
> >
On Mon, Aug 10, 2015 at 11:33:04AM -0700, Greg KH wrote:
> On Mon, Aug 10, 2015 at 12:31:19PM -0400, Gabriel L. Somlo wrote:
> > From: "Gabriel Somlo"
> >
> > Signed-off-by: Gabriel Somlo
> > ---
> > lib/kobject.c | 1 +
> > 1 file changed, 1 i
From: "Gabriel Somlo"
Signed-off-by: Gabriel Somlo
---
lib/kobject.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/kobject.c b/lib/kobject.c
index 0554077..8f07202 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -847,6 +847,7 @@ struct kobject *kset_find_obj(struct kset *kset, const
From: "Gabriel Somlo"
Each fw_cfg entry of type "file" has an associated 56-char,
nul-terminated ASCII string which represents its name. While
the fw_cfg device doesn't itself impose any specific naming
convention, QEMU developers have traditionally used path name
semantics (i.e. "etc/acpi/rsdp")
t;fw_cfg: loaded.\n");
+ return 0;
+
+err_scan:
+ fw_cfg_sysfs_cache_cleanup();
+ sysfs_remove_file(fw_cfg_top_ko, &fw_cfg_rev_attr.attr);
+err_rev:
+ fw_cfg_kobj_cleanup(fw_cfg_sel_ko);
+err_sel:
+ fw_cfg_kobj_cleanup(fw_cfg_top_ko);
+err_top:
+ fw_cfg_io
From: "Gabriel Somlo"
This patch set makes QEMU fw_cfg blobs available for viewing (read-only)
via SysFS.
New since v1:
1/3:
- renamed sysfs path components:
s/fw_cfg/qemu_fw_cfg/g, at Greg's suggestion
s/by_select/by_key/g since it
From: Gabriel Somlo
Signed-off-by: Gabriel Somlo
---
lib/kobject.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/kobject.c b/lib/kobject.c
index 7cbccd2..90d1be6 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -861,6 +861,7 @@ struct kobject *kset_find_obj(struct kset *kset, const c
From: Gabriel Somlo
Remove fw_cfg hardware interface details from
Documentation/devicetree/bindings/arm/fw-cfg.txt,
and replace them with a pointer to the authoritative
documentation in the QEMU source tree.
Signed-off-by: Gabriel Somlo
Cc: Laszlo Ersek
Acked-by: Rob Herring
Reviewed-by: Lasz
l) offset of data register
+ *
+ * e.g.:
+ * fw_cfg.ioport=2@0x510:0:1 (the default on x86)
+ * or
+ * fw_cfg.mmio=0xA@0x902:8:0 (the default on arm)
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+
+MODULE_AUTHOR("Gabriel L. Somlo
From: "Gabriel Somlo"
Allow access to QEMU firmware blobs, passed into the guest VM via
the fw_cfg device, through SysFS entries. Blob meta-data (e.g. name,
size, and fw_cfg key), as well as the raw binary blob data may be
accessed.
The SysFS access location is /sys/firmware/qemu_fw_cfg/... and
From: Gabriel Somlo
Each fw_cfg entry of type "file" has an associated 56-char,
nul-terminated ASCII string which represents its name. While
the fw_cfg device doesn't itself impose any specific naming
convention, QEMU developers have traditionally used path name
semantics (i.e. "etc/acpi/rsdp") t
Hi Pavel,
On Sat, Dec 19, 2015 at 10:12:28AM +0100, Pavel Machek wrote:
> On Thu 2015-12-17 11:09:23, Gabriel L. Somlo wrote:
> > ping ?
> >
> > Also, for the corresponding patch set on the QEMU end of things,
> > ping on http://thread.gmane.org/gmane.comp.emulato
On Sat, Feb 06, 2016 at 11:24:23PM -0800, Greg KH wrote:
> On Thu, Jan 28, 2016 at 09:23:12AM -0500, Gabriel L. Somlo wrote:
> > From: Gabriel Somlo
> >
> > Signed-off-by: Gabriel Somlo
> > ---
> > lib/kobject.c | 1 +
> > 1 file changed, 1 insertion(+
From: Gabriel Somlo
Signed-off-by: Gabriel Somlo
---
lib/kobject.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/kobject.c b/lib/kobject.c
index 7cbccd2..90d1be6 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -861,6 +861,7 @@ struct kobject *kset_find_obj(struct kset *kset, const c
Add a fw_cfg device node to the ACPI DSDT. This is mostly
informational, as the authoritative fw_cfg MMIO region(s)
are listed in the Device Tree. However, since we are building
ACPI tables, we might as well be thorough while at it...
Signed-off-by: Gabriel Somlo
Reviewed-by: Laszlo Ersek
Tested
From: "Gabriel Somlo"
Allow access to QEMU firmware blobs, passed into the guest VM via
the fw_cfg device, through SysFS entries. Blob meta-data (e.g. name,
size, and fw_cfg key), as well as the raw binary blob data may be
accessed.
The SysFS access location is /sys/firmware/qemu_fw_cfg/... and
Signed-off-by: Gabriel Somlo
Reviewed-by: Laszlo Ersek
Reviewed-by: Marc Marí
---
docs/specs/fw_cfg.txt | 9 +
1 file changed, 9 insertions(+)
diff --git a/docs/specs/fw_cfg.txt b/docs/specs/fw_cfg.txt
index 2099ad9..5414140 100644
--- a/docs/specs/fw_cfg.txt
+++ b/docs/specs/fw_cfg.tx
Expose the size of the control register (FW_CFG_CTL_SIZE) in fw_cfg.h.
Add comment to fw_cfg_io_realize() pointing out that since the
8-bit data register is always subsumed by the 16-bit control
register in the port I/O case, we use the control register width
as the *total* width of the (classic, n
tch 2/3.
>>>>>
>>>>> - Patch 2/3 adds a fw_cfg node to the pc SSDT.
>>>>>
>>>>> - Patch 3/3 adds a fw_cfg node to the arm DSDT.
>>>>>
>>>>> I made up some names - "FWCF" for the node name, and "FW
Add a fw_cfg device node to the ACPI SSDT. While the guest-side
firmware can't utilize this information (since it has to access
the hard-coded fw_cfg device to extract ACPI tables to begin with),
having fw_cfg listed in ACPI will help the guest kernel keep a more
accurate inventory of in-use IO por
cfg.ioport=2@0x510:0:1 (the default on x86)
+ * or
+ * fw_cfg.mmio=0xA@0x902:8:0 (the default on arm)
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+
+MODULE_AUTHOR("Gabriel L. Somlo ");
+MODULE_DESCRIPTION("QEMU fw
From: Gabriel Somlo
Each fw_cfg entry of type "file" has an associated 56-char,
nul-terminated ASCII string which represents its name. While
the fw_cfg device doesn't itself impose any specific naming
convention, QEMU developers have traditionally used path name
semantics (i.e. "etc/acpi/rsdp") t
Move BIOS_CFG_IOPORT define from pc.c to pc.h, and rename
it to FW_CFG_IO_BASE.
Cc: Marc Marí
Signed-off-by: Gabriel Somlo
Reviewed-by: Laszlo Ersek
Reviewed-by: Marc Marí
---
hw/i386/pc.c | 5 ++---
include/hw/i386/pc.h | 2 ++
2 files changed, 4 insertions(+), 3 deletions(-)
diff -
From: Gabriel Somlo
Remove fw_cfg hardware interface details from
Documentation/devicetree/bindings/arm/fw-cfg.txt,
and replace them with a pointer to the authoritative
documentation in the QEMU source tree.
Signed-off-by: Gabriel Somlo
Cc: Laszlo Ersek
Acked-by: Rob Herring
Reviewed-by: Lasz
tch 2/3.
>>>>>
>>>>> - Patch 2/3 adds a fw_cfg node to the pc SSDT.
>>>>>
>>>>> - Patch 3/3 adds a fw_cfg node to the arm DSDT.
>>>>>
>>>>> I made up some names - "FWCF" for the node name, and "FW
Hi Geert, Mateusz,
On Fri, Sep 25, 2020 at 03:16:02PM +0200, Geert Uytterhoeven wrote:
> Hi Mateusz,
>
> On Wed, Sep 23, 2020 at 12:10 PM Mateusz Holenko
> wrote:
> > From: Pawel Czarnecki
> >
> > This commit adds driver for the FPGA-based LiteX SoC
> > Controller from LiteX SoC builder.
> >
>
e consciously do *not* expose the feature in our CPUID bitmap, as most
> people will want to benefit from sleeping vCPUs to allow for over commit.
>
> Reported-by: "Gabriel L. Somlo"
That's maybe a bit inacurate, I didn't actually report anything *this*
patch is t
On Tue, Apr 11, 2017 at 08:41:11AM -0400, Gabriel L. Somlo wrote:
> On Tue, Apr 11, 2017 at 01:45:35PM +0200, Alexander Graf wrote:
> > From: "Michael S. Tsirkin"
> >
> > Guests that are heavy on futexes end up IPI'ing each other a lot. That
> > can
Eliminate the following sparse warnings:
tcpci.c:291:38: warning: incorrect type in argument 1 (different base types)
tcpci.c:291:38:expected unsigned short [unsigned] [usertype] header
tcpci.c:291:38:got restricted __le16 const [usertype] header
tcpci.c:296:16: warning: incorrect type in
Signed-off-by: Gabriel Somlo
---
drivers/staging/fsl-mc/bus/dpio/dpio-service.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/fsl-mc/bus/dpio/dpio-service.c
b/drivers/staging/fsl-mc/bus/dpio/dpio-service.c
index e5d6674..8c45f81 100644
--- a/drivers/staging/
Hi Radim,
On Wed, May 03, 2017 at 09:37:29PM +0200, Radim Krčmář wrote:
> kvm_mwait_in_guest() was overcomplicated and also missed one AMD bug
> that should prevent MWAIT pass through.
>
> This series ignores errata that don't have any Linux bug defined;
> I know of two minor (not affecting the h
On Thu, May 04, 2017 at 08:07:15PM +0200, Radim Krčmář wrote:
> 2017-05-04 13:56-0400, Gabriel L. Somlo:
> > If I wanted to test this (e.g. with OS X 10.8 guests on several of my older
> > Mac boxes running Fedora), which git repo would you have me use? (The series
> > won&#x
On Thu, May 04, 2017 at 08:07:15PM +0200, Radim Krčmář wrote:
> 2017-05-04 13:56-0400, Gabriel L. Somlo:
> > If I wanted to test this (e.g. with OS X 10.8 guests on several of my older
> > Mac boxes running Fedora), which git repo would you have me use? (The series
> > won&#x
Resolving checkpatch issue:
CHECK: 'successfuly' may be misspelled - perhaps 'successfully'?
Signed-off-by: Gabriel Somlo
---
On Tue, Jun 13, 2017 at 02:57:40PM +0200, Greg KH wrote:
> On Mon, Jun 12, 2017 at 03:43:35PM -0400, Gabriel L. Somlo wrote:
> >
Acked-by: Gabriel Somlo
On Tue, Nov 28, 2017 at 10:40:27PM +0100, Vasyl Gomonovych wrote:
> Fix ptr_ret.cocci warnings:
> drivers/firmware/efi/efi.c:610:8-14: WARNING: PTR_ERR_OR_ZERO can be used
>
> Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR
>
> Generated by: scripts/coccinelle/
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