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* target/i386: optimize string instructions

Browse source 
* target/i386: new Sierra Forest and Clearwater Forest models
 * rust: type-safe vmstate implementation
 * rust: use interior mutability for PL011
 * rust: clean ups
 * memtxattrs: remove usage of bitfields from MEMTXATTRS_UNSPECIFIED
 * gitlab-ci: enable Rust backtraces
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* target/i386: optimize string instructions
* target/i386: new Sierra Forest and Clearwater Forest models
* rust: type-safe vmstate implementation
* rust: use interior mutability for PL011
* rust: clean ups
* memtxattrs: remove usage of bitfields from MEMTXATTRS_UNSPECIFIED
* gitlab-ci: enable Rust backtraces

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# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
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# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (49 commits)
  gitlab-ci: include full Rust backtraces in test runs
  rust: qemu-api: add sub-subclass to the integration tests
  rust/zeroable: Implement Zeroable with const_zero macro
  rust: qdev: make reset take a shared reference
  rust: pl011: drop use of ControlFlow
  rust: pl011: pull device-specific code out of MemoryRegionOps callbacks
  rust: pl011: remove duplicate definitions
  rust: pl011: wrap registers with BqlRefCell
  rust: pl011: extract PL011Registers
  rust: pl011: pull interrupt updates out of read/write ops
  rust: pl011: extract CharBackend receive logic into a separate function
  rust: pl011: extract conversion to RegisterOffset
  rust: pl011: hide unnecessarily "pub" items from outside pl011::device
  rust: pl011: remove unnecessary "extern crate"
  rust: prefer NonNull::new to assertions
  rust: vmstate: make order of parameters consistent in vmstate_clock
  rust: vmstate: remove translation of C vmstate macros
  rust: pl011: switch vmstate to new-style macros
  rust: qemu_api: add vmstate_struct
  rust: vmstate: add public utility macros to implement VMState
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2025-01-29 09:51:03 -05:00
commit 871af84dd5
18 changed files with 1423 additions and 855 deletions
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21
include/exec/memattrs.h
View file

@ -23,12 +23,6 @@
* different semantics.
*/
typedef struct MemTxAttrs {
/* Bus masters which don't specify any attributes will get this
* (via the MEMTXATTRS_UNSPECIFIED constant), so that we can
* distinguish "all attributes deliberately clear" from
* "didn't specify" if necessary.
*/
unsigned int unspecified:1;
/*
* ARM/AMBA: TrustZone Secure access
* x86: System Management Mode access
@ -57,14 +51,27 @@ typedef struct MemTxAttrs {
* PID (PCI PASID) support: Limited to 8 bits process identifier.
*/
unsigned int pid:8;
/*
* Bus masters which don't specify any attributes will get this
* (via the MEMTXATTRS_UNSPECIFIED constant), so that we can
* distinguish "all attributes deliberately clear" from
* "didn't specify" if necessary.
*/
bool unspecified;
uint8_t _reserved1;
uint16_t _reserved2;
} MemTxAttrs;
QEMU_BUILD_BUG_ON(sizeof(MemTxAttrs) > 8);
/* Bus masters which don't specify any attributes will get this,
* which has all attribute bits clear except the topmost one
* (so that we can distinguish "all attributes deliberately clear"
* from "didn't specify" if necessary).
*/
#define MEMTXATTRS_UNSPECIFIED ((MemTxAttrs) { .unspecified = 1 })
#define MEMTXATTRS_UNSPECIFIED ((MemTxAttrs) { .unspecified = true })
/* New-style MMIO accessors can indicate that the transaction failed.
* A zero (MEMTX_OK) response means success; anything else is a failure