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| author | Weiwei Li <liweiwei@iscas.ac.cn> | 2022-02-04 10:26:58 +0800 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2022-02-16 12:25:52 +1000 |
| commit | bbce8ba8e6bddcd77abef4810a9426bad9939f3b (patch) | |
| tree | 0436417581285293b5853ef57ede836fb1f7931e /target | |
| parent | c5d77ddd8ebcd33da9561982e29c8f4b2dec0978 (diff) | |
| download | qemu-bbce8ba8e6bddcd77abef4810a9426bad9939f3b.zip qemu-bbce8ba8e6bddcd77abef4810a9426bad9939f3b.tar.gz qemu-bbce8ba8e6bddcd77abef4810a9426bad9939f3b.tar.bz2 | |
target/riscv: add support for svpbmt extension
- add PTE_PBMT bits: It uses two PTE bits, but otherwise has no effect on QEMU, since QEMU is sequentially consistent and doesn't model PMAs currently
- add PTE_PBMT bit check for inner PTE
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220204022658.18097-6-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'target')
| -rw-r--r-- | target/riscv/cpu.c | 1 | ||||
| -rw-r--r-- | target/riscv/cpu_bits.h | 2 | ||||
| -rw-r--r-- | target/riscv/cpu_helper.c | 4 |
3 files changed, 6 insertions, 1 deletions
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index e5676b4..b0a40b8 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -776,6 +776,7 @@ static Property riscv_cpu_properties[] = { DEFINE_PROP_BOOL("svinval", RISCVCPU, cfg.ext_svinval, false), DEFINE_PROP_BOOL("svnapot", RISCVCPU, cfg.ext_svnapot, false), + DEFINE_PROP_BOOL("svpbmt", RISCVCPU, cfg.ext_svpbmt, false), DEFINE_PROP_BOOL("zba", RISCVCPU, cfg.ext_zba, true), DEFINE_PROP_BOOL("zbb", RISCVCPU, cfg.ext_zbb, true), diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index 37ed4da..0fe01d7 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -561,7 +561,9 @@ typedef enum { #define PTE_A 0x040 /* Accessed */ #define PTE_D 0x080 /* Dirty */ #define PTE_SOFT 0x300 /* Reserved for Software */ +#define PTE_PBMT 0x6000000000000000ULL /* Page-based memory types */ #define PTE_N 0x8000000000000000ULL /* NAPOT translation */ +#define PTE_ATTR (PTE_N | PTE_PBMT) /* All attributes bits */ /* Page table PPN shift amount */ #define PTE_PPN_SHIFT 10 diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 437c948..746335b 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -937,9 +937,11 @@ restart: if (!(pte & PTE_V)) { /* Invalid PTE */ return TRANSLATE_FAIL; + } else if (!cpu->cfg.ext_svpbmt && (pte & PTE_PBMT)) { + return TRANSLATE_FAIL; } else if (!(pte & (PTE_R | PTE_W | PTE_X))) { /* Inner PTE, continue walking */ - if (pte & (PTE_D | PTE_A | PTE_U | PTE_N)) { + if (pte & (PTE_D | PTE_A | PTE_U | PTE_ATTR)) { return TRANSLATE_FAIL; } base = ppn << PGSHIFT; |