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2016-02-19MAINTAINERS: Add section for FPU emulationpull-softfloat-20160219softfloat.nextsoftfloat.for-upstreamPeter Maydell
Add an entry to the MAINTAINERS file for our softfloat FPU emulation code. This code is only 'odd fixes' but it's useful to record who to cc on patches to it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453814875-440-1-git-send-email-peter.maydell@linaro.org
2016-02-19osdep.h: Remove int_fast*_t Solaris compatibility codePeter Maydell
We now do not use the int_fast*_t types anywhere in QEMU, so we can remove the compatibility definitions we were providing for the benefit of ancient Solaris versions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Message-id: 1453807806-32698-5-git-send-email-peter.maydell@linaro.org
2016-02-19fpu: Use plain 'int' rather than 'int_fast16_t' for exponentsPeter Maydell
Use the plain 'int' type rather than 'int_fast16_t' for handling exponents. Exponents don't need to be exactly 16 bits, so using int16_t for them would confuse more than it clarified. This should be a safe change because int_fast16_t semantics permit use of 'int' (and on 32-bit glibc that is what you get). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Message-id: 1453807806-32698-4-git-send-email-peter.maydell@linaro.org
2016-02-19fpu: Use plain 'int' rather than 'int_fast16_t' for shift countsPeter Maydell
Use the plain 'int' type rather than 'int_fast16_t' for shift counts in the various shift related functions, since we don't actually care about the size of the integer at all here, and using int16_t would be confusing. This should be a safe change because int_fast16_t semantics permit use of 'int' (and on 32-bit glibc that is what you get). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Message-id: 1453807806-32698-3-git-send-email-peter.maydell@linaro.org
2016-02-19fpu: Remove use of int_fast16_t in conversions to int16Peter Maydell
Make the functions which convert floating point to 16 bit integer return int16_t rather than int_fast16_t, and correspondingly use int_fast16_t in their internal implementations where appropriate. (These functions are used only by the ARM target.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Message-id: 1453807806-32698-2-git-send-email-peter.maydell@linaro.org
2016-02-19target-mips: Stop using uint_fast*_t types in r4k_tlb_t structPeter Maydell
The r4k_tlb_t structure uses the uint_fast*_t types. Most of these uses are in bitfields and are thus pointless, because the bitfield itself specifies the width of the type; just use 'unsigned int' instead. (On glibc uint_fast16_t is defined as either 32 or 64 bits, so we know the code is not reliant on it being exactly 16 bits.) There is also one use of uint_fast8_t, which we replace with uint8_t, because both are exactly 8 bits on glibc and this is the only place outside the softfloat code which uses an int_fast*_t type. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2016-02-19Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2016-02-19' ↵Peter Maydell
into staging Error reporting patches for 2016-02-19 # gpg: Signature made Fri 19 Feb 2016 12:47:50 GMT using RSA key ID EB918653 # gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" # gpg: aka "Markus Armbruster <armbru@pond.sub.org>" * remotes/armbru/tags/pull-error-2016-02-19: vl: Clean up machine selection in main(). vl: Set error location when parsing memory options replay: Set error location properly when parsing options vl: Reset location after handling command-line arguments vl.c: Fix regression in machine error message Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-19Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2016-02-19' into ↵Peter Maydell
staging QAPI patches for 2016-02-19 # gpg: Signature made Fri 19 Feb 2016 10:10:18 GMT using RSA key ID EB918653 # gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" # gpg: aka "Markus Armbruster <armbru@pond.sub.org>" * remotes/armbru/tags/pull-qapi-2016-02-19: qapi: Change visit_start_implicit_struct to visit_start_alternate qapi: Don't box branches of flat unions qapi: Don't box struct branch of alternate qapi-visit: Use common idiom in gen_visit_fields_decl() qapi: Emit structs used as variants in topological order qapi: Adjust layout of FooList types qapi-visit: Less indirection in visit_type_Foo_fields() qapi-visit: Unify struct and union visit qapi: Visit variants in visit_type_FOO_fields() qapi-visit: Simplify how we visit common union members qapi: Add tests of complex objects within alternate qapi: Forbid 'any' inside an alternate qapi: Forbid empty unions and useless alternates qapi: Simplify excess input reporting in input visitors qapi-visit: Honor prefix of discriminator enum Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-19vl: Clean up machine selection in main().Markus Armbruster
We set machine_class to the default first, and update it to the real one later. Any use of machine_class in between is almost certainly wrong (there are no such uses right now). Set it once and for all instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
2016-02-19vl: Set error location when parsing memory optionsEduardo Habkost
Set error location so the error_report() calls will show appropriate command-line argument or config file info. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1455303747-19776-5-git-send-email-ehabkost@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19replay: Set error location properly when parsing optionsEduardo Habkost
Set error location so the error_report() calls will show appropriate command-line argument or config file info. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1455303747-19776-4-git-send-email-ehabkost@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19vl: Reset location after handling command-line argumentsEduardo Habkost
After looping through all command-line arguments, error location info becomes obsolete, and any function calling error_report() will print misleading information. This breaks error reporting for some option handling, like: $ qemu-system-x86_64 -icount rr=x -vnc :0 qemu-system-x86_64: -vnc :0: Invalid icount rr option: x $ qemu-system-x86_64 -m size= -vnc :0 qemu-system-x86_64: -vnc :0: missing 'size' option value Fix this by resetting location info as soon as we exit the command-line handling loop. With this, replay_configure() and set_memory_options() won't print any location info yet, but at least they won't print incorrect information. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1455303747-19776-3-git-send-email-ehabkost@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> ["Do not insert code here" comment added to prevent regressions] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19vl.c: Fix regression in machine error messageMarcel Apfelbaum
Commit e1ce0c3cb (vl.c: fix regression when reading machine type from config file) fixed the error message when the machine type was supplied inside the config file. However now the option name is not displayed correctly if the error happens when the machine is specified at command line. Running ./x86_64-softmmu/qemu-system-x86_64 -M q35-1.5 -redir tcp:8022::22 will result in the error message: qemu-system-x86_64: -redir tcp:8022::22: unsupported machine type Use -machine help to list supported machines Fixed it by restoring the error location and also extracted the code dealing with machine options into a separate function. Reported-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Marcel Apfelbaum <marcel@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1455303747-19776-2-git-send-email-ehabkost@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell
vhost, virtio, pci, pxe Fixes all over the place. New tests for pxe. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Thu 18 Feb 2016 15:46:39 GMT using RSA key ID D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" * remotes/mst/tags/for_upstream: tests/vhost-user-bridge: add scattering of incoming packets vhost-user interrupt management fixes rules: filter out irrelevant files change type of pci_bridge_initfn() to void dec: convert to realize() tests: add pxe e1000 and virtio-pci tests msix: fix msix_vector_masked virtio: optimize virtio_access_is_big_endian() for little-endian targets vhost: simplify vhost_needs_vring_endian() vhost: move virtio 1.0 check to cross-endian helper virtio: move cross-endian helper to vhost vhost-net: revert support of cross-endian vnet headers virtio-net: use the backend cross-endian capabilities Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-19qapi: Change visit_start_implicit_struct to visit_start_alternateEric Blake
After recent changes, the only remaining use of visit_start_implicit_struct() is for allocating the space needed when visiting an alternate. Since the term 'implicit struct' is hard to explain, rename the function to its current usage. While at it, we can merge the functionality of visit_get_next_type() into the same function, making it more like visit_start_struct(). Generated code is now slightly smaller: | { | Error *err = NULL; | |- visit_start_implicit_struct(v, (void**) obj, sizeof(BlockdevRef), &err); |+ visit_start_alternate(v, name, (GenericAlternate **)obj, sizeof(**obj), |+ true, &err); | if (err) { | goto out; | } |- visit_get_next_type(v, name, &(*obj)->type, true, &err); |- if (err) { |- goto out_obj; |- } | switch ((*obj)->type) { | case QTYPE_QDICT: | visit_start_struct(v, name, NULL, 0, &err); ... | } |-out_obj: |- visit_end_implicit_struct(v); |+ visit_end_alternate(v); | out: | error_propagate(errp, err); | } Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-16-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi: Don't box branches of flat unionsEric Blake
There's no reason to do two malloc's for a flat union; let's just inline the branch struct directly into the C union branch of the flat union. Surprisingly, fewer clients were actually using explicit references to the branch types in comparison to the number of flat unions thus modified. This lets us reduce the hack in qapi-types:gen_variants() added in the previous patch; we no longer need to distinguish between alternates and flat unions. The change to unboxed structs means that u.data (added in commit cee2dedb) is now coincident with random fields of each branch of the flat union, whereas beforehand it was only coincident with pointers (since all branches of a flat union have to be objects). Note that this was already the case for simple unions - but there we got lucky. Remember, visit_start_union() blindly returns true for all visitors except for the dealloc visitor, where it returns the value !!obj->u.data, and that this result then controls whether to proceed with the visit to the variant. Pre-patch, this meant that flat unions were testing whether the boxed pointer was still NULL, and thereby skipping visit_end_implicit_struct() and avoiding a NULL dereference if the pointer had not been allocated. The same was true for simple unions where the current branch had pointer type, except there we bypassed visit_type_FOO(). But for simple unions where the current branch had scalar type, the contents of that scalar meant that the decision to call visit_type_FOO() was data-dependent - the reason we got lucky there is that visit_type_FOO() for all scalar types in the dealloc visitor is a no-op (only the pointer variants had anything to free), so it did not matter whether the dealloc visit was skipped. But with this patch, we would risk leaking memory if we could skip a call to visit_type_FOO_fields() based solely on a data-dependent decision. But notice: in the dealloc visitor, visit_type_FOO() already handles a NULL obj - it was only the visit_type_implicit_FOO() that was failing to check for NULL. And now that we have refactored things to have the branch be part of the parent struct, we no longer have a separate pointer that can be NULL in the first place. So we can just delete the call to visit_start_union() altogether, and blindly visit the branch type; there is no change in behavior except to the dealloc visitor, where we now unconditionally visit the branch, but where that visit is now always safe (for a flat union, we can no longer dereference NULL, and for a simple union, visit_type_FOO() was already safely handling NULL on pointer types). Unfortunately, simple unions are not as easy to switch to unboxed layout; because we are special-casing the hidden implicit type with a single 'data' member, we really DO need to keep calling another layer of visit_start_struct(), with a second malloc; although there are some cleanups planned for simple unions in later patches. visit_start_union() and gen_visit_implicit_struct() are now unused. Drop them. Note that after this patch, the only remaining use of visit_start_implicit_struct() is for alternate types; the next patch will do further cleanup based on that fact. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-14-git-send-email-eblake@redhat.com> [Dead code deletion squashed in, commit message updated accordingly] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi: Don't box struct branch of alternateEric Blake
There's no reason to do two malloc's for an alternate type visiting a QAPI struct; let's just inline the struct directly as the C union branch of the struct. Surprisingly, no clients were actually using the struct member prior to this patch outside of the testsuite; an earlier patch in the series added some testsuite coverage to make the effect of this patch more obvious. In qapi.py, c_type() gains a new is_unboxed flag to control when we are emitting a C struct unboxed within the context of an outer struct (different from our other two modes of usage with no flags for normal local variable declarations, and with is_param for adding 'const' in a parameter list). I don't know if there is any more pythonic way of collapsing the two flags into a single parameter, as we never have a caller setting both flags at once. Ultimately, we want to also unbox branches for QAPI unions, but as that touches a lot more client code, it is better as separate patches. But since unions and alternates share gen_variants(), I had to hack in a way to test if we are visiting an alternate type for setting the is_unboxed flag: look for a non-object branch. This works because alternates have at least two branches, with at most one object branch, while unions have only object branches. The hack will go away in a later patch. The generated code difference to qapi-types.h is relatively small: | struct BlockdevRef { | QType type; | union { /* union tag is @type */ | void *data; |- BlockdevOptions *definition; |+ BlockdevOptions definition; | char *reference; | } u; | }; The corresponding spot in qapi-visit.c calls visit_type_FOO(), which first calls visit_start_struct() to allocate or deallocate the member and handle a layer of {} from the JSON stream, then visits the members. To peel off the indirection and the memory management that comes with it, we inline this call, then suppress allocation / deallocation by passing NULL to visit_start_struct(), and adjust the member visit: | switch ((*obj)->type) { | case QTYPE_QDICT: |- visit_type_BlockdevOptions(v, name, &(*obj)->u.definition, &err); |+ visit_start_struct(v, name, NULL, 0, &err); |+ if (err) { |+ break; |+ } |+ visit_type_BlockdevOptions_fields(v, &(*obj)->u.definition, &err); |+ error_propagate(errp, err); |+ err = NULL; |+ visit_end_struct(v, &err); | break; | case QTYPE_QSTRING: | visit_type_str(v, name, &(*obj)->u.reference, &err); The visit of non-object fields is unchanged. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-13-git-send-email-eblake@redhat.com> [Commit message tweaked] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi-visit: Use common idiom in gen_visit_fields_decl()Eric Blake
We have several instances of methods that do an early exit if output is not needed, then log that output is being generated, and finally produce the output; see qapi-types.py:gen_object() and qapi-visit.py:gen_visit_implicit_struct(). The odd man out was gen_visit_fields_decl(); rearrange it to be more like the others. No semantic change or difference to generated code. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-12-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi: Emit structs used as variants in topological orderEric Blake
Right now, we emit the branches of union types as a boxed pointer, and it suffices to have a forward declaration of the type. However, a future patch will swap things to directly use the branch type, instead of hiding it behind a pointer. For this to work, the compiler needs the full definition of the type, not just a forward declaration, prior to the union that is including the branch type. This patch just adds topological sorting to hoist all types mentioned in a branch of a union to be fully declared before the union itself. The sort is always possible, because we do not allow circular union types that include themselves as a direct branch (it is, however, still possible to include a branch type that itself has a pointer to the union, for a type that can indirectly recursively nest itself - that remains safe, because that the member of the branch type will remain a pointer, and the QMP representation of such a type adds another {} for each recurring layer of the union type). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-11-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi: Adjust layout of FooList typesEric Blake
By sticking the next pointer first, we don't need a union with 64-bit padding for smaller types. On 32-bit platforms, this can reduce the size of uint8List from 16 bytes (or 12, depending on whether 64-bit ints can tolerate 4-byte alignment) down to 8. It has no effect on 64-bit platforms (where alignment still dictates a 16-byte struct); but fewer anonymous unions is still a win in my book. It requires visit_next_list() to gain a size parameter, to know what size element to allocate; comparable to the size parameter of visit_start_struct(). I debated about going one step further, to allow for fewer casts, by doing: typedef GenericList GenericList; struct GenericList { GenericList *next; }; struct FooList { GenericList base; Foo *value; }; so that you convert to 'GenericList *' by '&foolist->base', and back by 'container_of(generic, GenericList, base)' (as opposed to the existing '(GenericList *)foolist' and '(FooList *)generic'). But doing that would require hoisting the declaration of GenericList prior to inclusion of qapi-types.h, rather than its current spot in visitor.h; it also makes iteration a bit more verbose through 'foolist->base.next' instead of 'foolist->next'. Note that for lists of objects, the 'value' payload is still hidden behind a boxed pointer. Someday, it would be nice to do: struct FooList { FooList *next; Foo value; }; for one less level of malloc for each list element. This patch is a step in that direction (now that 'next' is no longer at a fixed non-zero offset within the struct, we can store more than just a pointer's-worth of data as the value payload), but the actual conversion would be a task for another series, as it will touch a lot of code. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-10-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi-visit: Less indirection in visit_type_Foo_fields()Eric Blake
We were passing 'Foo **obj' to the internal helper function, but all uses within the helper were via reads of '*obj'. Refactor things to pass one less level of indirection, by having the callers dereference before calling. For an example of the generated code change: |-static void visit_type_BalloonInfo_fields(Visitor *v, BalloonInfo **obj, Error **errp) |+static void visit_type_BalloonInfo_fields(Visitor *v, BalloonInfo *obj, Error **errp) | { | Error *err = NULL; | |- visit_type_int(v, "actual", &(*obj)->actual, &err); |+ visit_type_int(v, "actual", &obj->actual, &err); | error_propagate(errp, err); | } | |@@ -261,7 +261,7 @@ void visit_type_BalloonInfo(Visitor *v, | if (!*obj) { | goto out_obj; | } |- visit_type_BalloonInfo_fields(v, obj, &err); |+ visit_type_BalloonInfo_fields(v, *obj, &err); | out_obj: The refactoring will also make it easier to reuse the helpers in a future patch when implicit structs are stored directly in the parent struct rather than boxed through a pointer. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-9-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi-visit: Unify struct and union visitMarkus Armbruster
gen_visit_union() is now just like gen_visit_struct(). Rename it to gen_visit_object(), use it for structs, and drop gen_visit_struct(). Output is unchanged. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1453902888-20457-4-git-send-email-armbru@redhat.com> [split out variant handling, rebase to earlier changes] Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-8-git-send-email-eblake@redhat.com>
2016-02-19qapi: Visit variants in visit_type_FOO_fields()Eric Blake
We initially created the static visit_type_FOO_fields() helper function for reuse of code - we have cases where the initial setup for a visit has different allocation (depending on whether the fields represent a stand-alone type or are embedded as part of a larger type), but where the actual field visits are identical once a pointer is available. Up until the previous patch, visit_type_FOO_fields() was only used for structs (no variants), so it was covering every field for each type where it was emitted. Meanwhile, the code for visiting unions looks like: static visit_type_U_fields() { visit base; visit local_members; } visit_type_U() { visit_start_struct(); visit_type_U_fields(); visit variants; visit_end_struct(); } which splits the fields of the union visit across two functions. Move the code to visit variants to live inside visit_type_U_fields(), while making it conditional on having variants so that all other instances of the helper function remain unchanged. This is also a step closer towards unifying struct and union visits, and towards allowing one union type to be the branch of another flat union. The resulting diff to the generated code is a bit hard to read, but it can be verified that it touches only union types, and that the end result is the following general structure: static visit_type_U_fields() { visit base; visit local_members; visit variants; } visit_type_U() { visit_start_struct(); visit_type_U_fields(); visit_end_struct(); } Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-7-git-send-email-eblake@redhat.com> [gen_visit_struct_fields() parameter variants made mandatory] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi-visit: Simplify how we visit common union membersMarkus Armbruster
For a simple union SU, gen_visit_union() generates a visit of its single tag member, like this: visit_type_SUKind(v, "type", &(*obj)->type, &err); For a flat union FU with base B, it generates a visit of its base fields: visit_type_B_fields(v, (B **)obj, &err); Instead, we can simply visit the common members using the same fields visit function we use for structs, generated with gen_visit_struct_fields(). This function visits the base if any, then the local members. For a simple union SU, visit_type_SU_fields() contains exactly the old tag member visit, because there is no base, and the tag member is the only member. For instance, the code generated for qapi-schema.json's KeyValue changes like this: +static void visit_type_KeyValue_fields(Visitor *v, KeyValue **obj, Error **errp) +{ + Error *err = NULL; + + visit_type_KeyValueKind(v, "type", &(*obj)->type, &err); + if (err) { + goto out; + } + +out: + error_propagate(errp, err); +} + void visit_type_KeyValue(Visitor *v, const char *name, KeyValue **obj, Error **errp) { Error *err = NULL; @@ -4863,7 +4911,7 @@ void visit_type_KeyValue(Visitor *v, con if (!*obj) { goto out_obj; } - visit_type_KeyValueKind(v, "type", &(*obj)->type, &err); + visit_type_KeyValue_fields(v, obj, &err); if (err) { goto out_obj; } For a flat union FU, visit_type_FU_fields() contains exactly the old base fields visit, because there is a base, but no members. For instance, the code generated for qapi-schema.json's CpuInfo changes like this: static void visit_type_CpuInfoBase_fields(Visitor *v, CpuInfoBase **obj, Error **errp); +static void visit_type_CpuInfo_fields(Visitor *v, CpuInfo **obj, Error **errp) +{ + Error *err = NULL; + + visit_type_CpuInfoBase_fields(v, (CpuInfoBase **)obj, &err); + if (err) { + goto out; + } + +out: + error_propagate(errp, err); +} + static void visit_type_CpuInfoX86_fields(Visitor *v, CpuInfoX86 **obj, Error **errp) ... @@ -3485,7 +3509,7 @@ void visit_type_CpuInfo(Visitor *v, cons if (!*obj) { goto out_obj; } - visit_type_CpuInfoBase_fields(v, (CpuInfoBase **)obj, &err); + visit_type_CpuInfo_fields(v, obj, &err); if (err) { goto out_obj; } As you see, the generated code grows a bit, but in practice, it's lost in the noise: qapi-schema.json's qapi-visit.c gains roughly 1%. This simplification became possible with commit 441cbac "qapi-visit: Convert to QAPISchemaVisitor, fixing bugs". It's a step towards unifying gen_struct() and gen_union(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1453902888-20457-2-git-send-email-armbru@redhat.com> [improve commit message examples] Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-6-git-send-email-eblake@redhat.com> [Commit message tweaked]
2016-02-19qapi: Add tests of complex objects within alternateEric Blake
Upcoming patches will adjust how we visit an object branch of an alternate; but we were completely lacking testsuite coverage. Rectify this, so that the future patches will be able to highlight the changes and still prove that we avoided regressions. In particular, the use of a flat union UserDefFlatUnion rather than a simple struct UserDefA as the branch will give us coverage of an object with variants. And visiting an alternate as both the top level and as a nested member gives confidence in correct memory allocation handling, especially if the test is run under valgrind. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-5-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi: Forbid 'any' inside an alternateEric Blake
The whole point of an alternate is to allow some type-safety while still accepting more than one JSON type. Meanwhile, the 'any' type exists to bypass type-safety altogether. The two are incompatible: you can't accept every type, and still tell which branch of the alternate to use for the parse; fix this to give a sane error instead of a Python stack trace. Note that other types that can't be alternate members are caught earlier, by check_type(). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-4-git-send-email-eblake@redhat.com> [Commit message tweaked] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi: Forbid empty unions and useless alternatesEric Blake
Empty unions serve no purpose, and while we compile with gcc which permits them, strict C99 forbids them. We happen to inject a dummy 'void *data' member into the C unions that represent QAPI unions and alternates, but we want to get rid of that member (it pollutes the namespace for no good reason), which would leave us with an empty union if the user didn't provide any branches. While empty structs make sense in QAPI, empty unions don't add any expressiveness to the QMP language. So prohibit them at parse time. Update the documentation and testsuite to match. Note that the documentation already mentioned that alternates should have "two or more JSON data types"; so this also fixes the code to enforce that. However, we have existing uses of a union type with only one branch, so the 2-or-more strictness is intentionally limited to alternates. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455778109-6278-3-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi: Simplify excess input reporting in input visitorsEric Blake
When reporting that an unvisited member remains at the end of an input visit for a struct, we were using g_hash_table_find() coupled with a callback function that always returns true, to locate an arbitrary member of the hash table. But if all we need is an arbitrary entry, we can get that from a single-use iterator, without needing a tautological callback function. Technically, our cast of &(GQueue *) to (void **) is not strict C (while void * must be able to hold all other pointers, nothing says a void ** has to be the same width or representation as a GQueue **). The kosher way to write it would be the verbose: void *tmp; GQueue *any; if (g_hash_table_iter_next(&iter, NULL, &tmp)) { any = tmp; But our code base (not to mention glib itself) already has other cases of assuming that ALL pointers have the same width and representation, where a compiler would have to go out of its way to mis-compile our borderline behavior. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <1455778109-6278-2-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-19qapi-visit: Honor prefix of discriminator enumEric Blake
When we added support for a user-specified prefix for an enum type (commit 351d36e), we forgot to teach the qapi-visit code to honor that prefix in the case of using a prefixed enum as the discriminator for a flat union. While there is still some on-list debate on whether we want to keep prefixes, we should at least make it work as long as it is still part of the code base. Reported-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1455665965-27638-1-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-18tests/vhost-user-bridge: add scattering of incoming packetsVictor Kaplansky
This patch adds to the vubr test the scattering of incoming packets to the chain of RX buffer. Also, this patch corrects the size of the header preceding the packet in RX buffers. Note that this patch doesn't add the support for mergeable buffers. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-02-18Merge remote-tracking branch ↵Peter Maydell
'remotes/pmaydell/tags/pull-target-arm-20160218-1' into staging target-arm queue: * implement or fix various EL3 trap behaviour for system registers * clean up the trap/undef handling of the SRS instruction * add some missing AArch64 performance monitor system registers * implement reset for the PL061 GPIO device * QOMify sd.c and the pxa2xx_mmci device * SD card emulation fixes for booting Tianocore UEFI on RPi2 * QOMify various ARM timer devices # gpg: Signature made Thu 18 Feb 2016 15:19:31 GMT using RSA key ID 14360CDE # gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" # gpg: aka "Peter Maydell <pmaydell@gmail.com>" # gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" * remotes/pmaydell/tags/pull-target-arm-20160218-1: (36 commits) hw/timer: QOM'ify pxa2xx_timer hw/timer: QOM'ify pl031 hw/timer: QOM'ify exynos4210_rtc hw/timer: QOM'ify exynos4210_pwm hw/timer: QOM'ify exynos4210_mct hw/timer: QOM'ify arm_timer (pass 2) hw/timer: QOM'ify arm_timer (pass 1) hw/sd: use guest error logging rather than fprintf to stderr hw/sd: model a power-up delay, as a workaround for an EDK2 bug hw/sd: implement CMD23 (SET_BLOCK_COUNT) for MMC compatibility hw/sd/pxa2xx_mmci: Add reset function hw/sd/pxa2xx_mmci: Convert to VMStateDescription hw/sd/pxa2xx_mmci: Update to use new SDBus APIs hw/sd/pxa2xx_mmci: convert to SysBusDevice object sdhci_sysbus: Create SD card device in users, not the device itself hw/sd/sdhci.c: Update to use SDBus APIs hw/sd: Add QOM bus which SD cards plug in to hw/sd/sd.c: Convert sd_reset() function into Device reset method hw/sd/sd.c: QOMify hw/sd/sdhci.c: Remove x-drive property ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18hw/timer: QOM'ify pxa2xx_timerpull-target-arm-20160218-1xiaoqiang.zhao
* split the old SysBus init function into an instance_init and a Device realize function * use DeviceClass::realize instead of SysBusDeviceClass::init Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18hw/timer: QOM'ify pl031xiaoqiang.zhao
assign pl031_init to pl031_info.instance_init and drop the SysBusDeviceClass::init Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18hw/timer: QOM'ify exynos4210_rtcxiaoqiang.zhao
assign exynos4210_rtc_init to exynos4210_rtc_info.instance_init and drop the SysBusDeviceClass::init Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18hw/timer: QOM'ify exynos4210_pwmxiaoqiang.zhao
assign exynos4210_pwm_init to exynos4210_pwm_info.instance_init and drop the SysBusDeviceClass::init Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18hw/timer: QOM'ify exynos4210_mctxiaoqiang.zhao
assign exynos4210_mct_init to exynos4210_mct_info.instance_init and drop the SysBusDeviceClass::init Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18hw/timer: QOM'ify arm_timer (pass 2)xiaoqiang.zhao
assign DeviceClass::vmsd instead of using vmstate_register function Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18hw/timer: QOM'ify arm_timer (pass 1)xiaoqiang.zhao
* assign icp_pit_init to icp_pit_info.instance_init * split the old SysBus init function into an instance_init and a Device realize function * use DeviceClass::realize instead of SysBusDeviceClass::init Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18hw/sd: use guest error logging rather than fprintf to stderrAndrew Baumann
Some of these errors may be harmless (e.g. probing unimplemented commands, or issuing CMD12 in the wrong state), and may also be quite frequent. Spamming the standard error output isn't desirable in such cases. Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com> Message-id: 1454902521-21164-4-git-send-email-Andrew.Baumann@microsoft.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18hw/sd: model a power-up delay, as a workaround for an EDK2 bugAndrew Baumann
The SD spec for ACMD41 says that a zero argument is an "inquiry" ACMD41, which does not start initialisation and is used only for retrieving the OCR. However, Tianocore EDK2 (UEFI) has a bug [1]: it first sends an inquiry (zero) ACMD41. If that first request returns an OCR value with the power up bit (0x80000000) set, it assumes the card is ready and continues, leaving the card in the wrong state. (My assumption is that this works on hardware, because no real card is immediately powered up upon reset.) This change models a delay of 0.5ms from the first ACMD41 to the power being up. However, it also immediately sets the power on upon seeing a non-zero (non-enquiry) ACMD41. This speeds up UEFI boot, it should also account for guests that simply delay after card reset and then issue an ACMD41 that they expect will succeed. [1] https://github.com/tianocore/edk2/blob/master/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c#L279 (This is the loop starting with "We need to wait for the MMC or SD card is ready") Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com> Message-id: 1454902521-21164-3-git-send-email-Andrew.Baumann@microsoft.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18hw/sd: implement CMD23 (SET_BLOCK_COUNT) for MMC compatibilityAndrew Baumann
CMD23 is optional for SD but required for MMC, and the UEFI bootloader used for Windows on Raspberry Pi 2 issues it. Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com> Message-id: 1454902521-21164-2-git-send-email-Andrew.Baumann@microsoft.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-18hw/sd/pxa2xx_mmci: Add reset functionPeter Maydell
Add a reset function to the pxa2xx_mmci device; previously it had no handling for system reset at all. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Message-id: 1455646193-13238-11-git-send-email-peter.maydell@linaro.org
2016-02-18hw/sd/pxa2xx_mmci: Convert to VMStateDescriptionPeter Maydell
Convert the pxa2xx_mmci device from manual save/load functions to a VMStateDescription structure. This is a migration compatibility break. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Message-id: 1455646193-13238-10-git-send-email-peter.maydell@linaro.org
2016-02-18hw/sd/pxa2xx_mmci: Update to use new SDBus APIsPeter Maydell
Now the PXA2xx MMCI device is QOMified itself, we can update it to use the SDBus APIs to talk to the SD card. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1455646193-13238-9-git-send-email-peter.maydell@linaro.org
2016-02-18hw/sd/pxa2xx_mmci: convert to SysBusDevice objectPeter Maydell
Convert the pxa2xx_mmci device to be a sysbus device. In this commit we only change the device itself, and leave the interface to the SD card using the old non-SDBus APIs. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Message-id: 1455646193-13238-8-git-send-email-peter.maydell@linaro.org
2016-02-18sdhci_sysbus: Create SD card device in users, not the device itselfPeter Maydell
Move the creation of the SD card device from the sdhci_sysbus device itself into the boards that create these devices. This allows us to remove the cannot_instantiate_with_device_add notation because we no longer call drive_get_next in the device model. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@xilinx.com> Message-id: 1455646193-13238-7-git-send-email-peter.maydell@linaro.org
2016-02-18hw/sd/sdhci.c: Update to use SDBus APIsPeter Maydell
Update the SDHCI code to use the new SDBus APIs. This commit introduces the new command line options required to connect a disk to sdhci-pci: -device sdhci-pci -drive id=mydrive,[...] -device sd,drive=mydrive Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@xilinx.com> Message-id: 1455646193-13238-6-git-send-email-peter.maydell@linaro.org
2016-02-18hw/sd: Add QOM bus which SD cards plug in toPeter Maydell
Add a QOM bus for SD cards to plug in to. Note that since sd_enable() is used only by one board and there only as part of a broken implementation, we do not provide it in the SDBus API (but instead add a warning comment about the old function). Whoever converts OMAP and the nseries boards to QOM will need to either implement the card switch properly or move the enable hack into the OMAP MMC controller model. In the SDBus API, the old-style use of sd_set_cb to register some qemu_irqs for notification of card insertion and write-protect toggling is replaced with methods in the SDBusClass which the card calls on status changes and methods in the SDClass which the controller can call to find out the current status. The query methods will allow us to remove the abuse of the 'register irqs' API by controllers in their reset methods to trigger the card to tell them about the current status again. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@xilinx.com> Message-id: 1455646193-13238-5-git-send-email-peter.maydell@linaro.org
2016-02-18hw/sd/sd.c: Convert sd_reset() function into Device reset methodPeter Maydell
Convert the sd_reset() function into a proper Device reset method. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@xilinx.com> Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Message-id: 1455646193-13238-4-git-send-email-peter.maydell@linaro.org
2016-02-18hw/sd/sd.c: QOMifyPeter Maydell
Turn the SD card into a QOM device. This conversion only changes the device itself; the various functions which are effectively methods on the device are not touched at this point. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Reviewed-by: Alistair Francis <alistair.francis@xilinx.com> Message-id: 1455646193-13238-3-git-send-email-peter.maydell@linaro.org