1 | target-arm queue: a smallish set of patches for rc1 tomorrow. | 1 | Massively slimmed down v2: MemTag broke bsd-user, and the npcm7xx |
---|---|---|---|
2 | I've included the tcg patches because RTH has no others that | 2 | ethernet device failed 'make check' on big-endian hosts. |
3 | would merit a pullreq. | ||
4 | 3 | ||
5 | I haven't included Thomas Huth's 17-patch set to deal with | ||
6 | the introspection crashes, to give that a little more time | ||
7 | on-list for review. | ||
8 | |||
9 | thanks | ||
10 | -- PMM | 4 | -- PMM |
11 | 5 | ||
12 | The following changes since commit 102ad0a80f5110483efd06877c29c4236be267f9: | 6 | The following changes since commit 83339e21d05c824ebc9131d644f25c23d0e41ecf: |
13 | 7 | ||
14 | Merge remote-tracking branch 'remotes/armbru/tags/pull-misc-2018-07-16' into staging (2018-07-16 15:34:38 +0100) | 8 | Merge remote-tracking branch 'remotes/stefanha-gitlab/tags/block-pull-request' into staging (2021-02-10 15:42:20 +0000) |
15 | 9 | ||
16 | are available in the Git repository at: | 10 | are available in the Git repository at: |
17 | 11 | ||
18 | git://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20180716 | 12 | https://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20210211-1 |
19 | 13 | ||
20 | for you to fetch changes up to 3474c98a2a2afcefa7c665f02ad2bed2a43ab0f7: | 14 | for you to fetch changes up to d3c1183ffeb71ca3a783eae3d7e1c51e71e8a621: |
21 | 15 | ||
22 | accel/tcg: Assert that tlb fill gave us a valid TLB entry (2018-07-16 17:26:01 +0100) | 16 | target/arm: Correctly initialize MDCR_EL2.HPMN (2021-02-11 19:48:09 +0000) |
23 | 17 | ||
24 | ---------------------------------------------------------------- | 18 | ---------------------------------------------------------------- |
25 | target-arm queue: | 19 | target-arm queue: |
26 | * accel/tcg: Use correct test when looking in victim TLB for code | 20 | * Correctly initialize MDCR_EL2.HPMN |
27 | * bcm2835_aux: Swap RX and TX interrupt assignments | 21 | * versal: Use nr_apu_cpus in favor of hard coding 2 |
28 | * hw/arm/bcm2836: Mark the bcm2836 / bcm2837 devices with user_creatable = false | 22 | * accel/tcg: Add URL of clang bug to comment about our workaround |
29 | * hw/intc/arm_gic: Fix handling of GICD_ITARGETSR | 23 | * Add support for FEAT_DIT, Data Independent Timing |
30 | * hw/intc/arm_gic: Check interrupt number in gic_deactivate_irq() | 24 | * Remove GPIO from unimplemented NPCM7XX |
31 | * aspeed: Implement write-1-{set, clear} for AST2500 strapping | 25 | * Fix SCR RES1 handling |
32 | * target/arm: Fix LD1W and LDFF1W (scalar plus vector) | 26 | * Don't migrate CPUARMState.features |
33 | 27 | ||
34 | ---------------------------------------------------------------- | 28 | ---------------------------------------------------------------- |
35 | Andrew Jeffery (1): | 29 | Aaron Lindsay (1): |
36 | aspeed: Implement write-1-{set, clear} for AST2500 strapping | 30 | target/arm: Don't migrate CPUARMState.features |
37 | 31 | ||
38 | Guenter Roeck (1): | 32 | Daniel Müller (1): |
39 | bcm2835_aux: Swap RX and TX interrupt assignments | 33 | target/arm: Correctly initialize MDCR_EL2.HPMN |
40 | 34 | ||
41 | Peter Maydell (4): | 35 | Edgar E. Iglesias (1): |
42 | hw/intc/arm_gic: Check interrupt number in gic_deactivate_irq() | 36 | hw/arm: versal: Use nr_apu_cpus in favor of hard coding 2 |
43 | hw/intc/arm_gic: Fix handling of GICD_ITARGETSR | ||
44 | accel/tcg: Use correct test when looking in victim TLB for code | ||
45 | accel/tcg: Assert that tlb fill gave us a valid TLB entry | ||
46 | 37 | ||
47 | Richard Henderson (1): | 38 | Hao Wu (1): |
48 | target/arm: Fix LD1W and LDFF1W (scalar plus vector) | 39 | hw/arm: Remove GPIO from unimplemented NPCM7XX |
49 | 40 | ||
50 | Thomas Huth (1): | 41 | Mike Nawrocki (1): |
51 | hw/arm/bcm2836: Mark the bcm2836 / bcm2837 devices with user_creatable = false | 42 | target/arm: Fix SCR RES1 handling |
52 | 43 | ||
53 | include/hw/misc/aspeed_scu.h | 2 ++ | 44 | Peter Maydell (2): |
54 | accel/tcg/cputlb.c | 6 +++--- | 45 | arm: Update infocenter.arm.com URLs |
55 | hw/arm/bcm2836.c | 2 ++ | 46 | accel/tcg: Add URL of clang bug to comment about our workaround |
56 | hw/char/bcm2835_aux.c | 4 ++-- | ||
57 | hw/intc/arm_gic.c | 22 +++++++++++++++++++--- | ||
58 | hw/misc/aspeed_scu.c | 19 +++++++++++++++++-- | ||
59 | target/arm/sve_helper.c | 4 ++-- | ||
60 | 7 files changed, 47 insertions(+), 12 deletions(-) | ||
61 | 47 | ||
48 | Rebecca Cran (4): | ||
49 | target/arm: Add support for FEAT_DIT, Data Independent Timing | ||
50 | target/arm: Support AA32 DIT by moving PSTATE_SS from cpsr into env->pstate | ||
51 | target/arm: Set ID_AA64PFR0.DIT and ID_PFR0.DIT to 1 for "max" AA64 CPU | ||
52 | target/arm: Set ID_PFR0.DIT to 1 for "max" 32-bit CPU | ||
53 | |||
54 | include/hw/dma/pl080.h | 7 ++-- | ||
55 | include/hw/misc/arm_integrator_debug.h | 2 +- | ||
56 | include/hw/ssi/pl022.h | 5 ++- | ||
57 | target/arm/cpu.h | 17 ++++++++ | ||
58 | target/arm/internals.h | 6 +++ | ||
59 | accel/tcg/cpu-exec.c | 25 +++++++++--- | ||
60 | hw/arm/aspeed_ast2600.c | 2 +- | ||
61 | hw/arm/musca.c | 4 +- | ||
62 | hw/arm/npcm7xx.c | 8 ---- | ||
63 | hw/arm/xlnx-versal.c | 4 +- | ||
64 | hw/misc/arm_integrator_debug.c | 2 +- | ||
65 | hw/timer/arm_timer.c | 7 ++-- | ||
66 | target/arm/cpu.c | 4 ++ | ||
67 | target/arm/cpu64.c | 5 +++ | ||
68 | target/arm/helper-a64.c | 27 +++++++++++-- | ||
69 | target/arm/helper.c | 71 +++++++++++++++++++++++++++------- | ||
70 | target/arm/machine.c | 2 +- | ||
71 | target/arm/op_helper.c | 9 +---- | ||
72 | target/arm/translate-a64.c | 12 ++++++ | ||
73 | 19 files changed, 164 insertions(+), 55 deletions(-) | ||
74 | diff view generated by jsdifflib |
Deleted patch | |||
---|---|---|---|
1 | From: Richard Henderson <richard.henderson@linaro.org> | ||
2 | 1 | ||
3 | 'I' was being double-incremented; correctly within the inner loop | ||
4 | and incorrectly within the outer loop. | ||
5 | |||
6 | Signed-off-by: Richard Henderson <richard.henderson@linaro.org> | ||
7 | Reviewed-by: Laurent Desnogues <laurent.desnogues@gmail.com> | ||
8 | Reviewed-by: Alex Bennée <alex.bennee@linaro.org> | ||
9 | Tested-by: Alex Bennée <alex.bennee@linaro.org> | ||
10 | Message-id: 20180711103957.3040-1-richard.henderson@linaro.org | ||
11 | Signed-off-by: Peter Maydell <peter.maydell@linaro.org> | ||
12 | --- | ||
13 | target/arm/sve_helper.c | 4 ++-- | ||
14 | 1 file changed, 2 insertions(+), 2 deletions(-) | ||
15 | |||
16 | diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c | ||
17 | index XXXXXXX..XXXXXXX 100644 | ||
18 | --- a/target/arm/sve_helper.c | ||
19 | +++ b/target/arm/sve_helper.c | ||
20 | @@ -XXX,XX +XXX,XX @@ void HELPER(NAME)(CPUARMState *env, void *vd, void *vg, void *vm, \ | ||
21 | intptr_t i, oprsz = simd_oprsz(desc); \ | ||
22 | unsigned scale = simd_data(desc); \ | ||
23 | uintptr_t ra = GETPC(); \ | ||
24 | - for (i = 0; i < oprsz; i++) { \ | ||
25 | + for (i = 0; i < oprsz; ) { \ | ||
26 | uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \ | ||
27 | do { \ | ||
28 | TYPEM m = 0; \ | ||
29 | @@ -XXX,XX +XXX,XX @@ void HELPER(NAME)(CPUARMState *env, void *vd, void *vg, void *vm, \ | ||
30 | uintptr_t ra = GETPC(); \ | ||
31 | bool first = true; \ | ||
32 | mmap_lock(); \ | ||
33 | - for (i = 0; i < oprsz; i++) { \ | ||
34 | + for (i = 0; i < oprsz; ) { \ | ||
35 | uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \ | ||
36 | do { \ | ||
37 | TYPEM m = 0; \ | ||
38 | -- | ||
39 | 2.17.1 | ||
40 | |||
41 | diff view generated by jsdifflib |
Deleted patch | |||
---|---|---|---|
1 | From: Andrew Jeffery <andrew@aj.id.au> | ||
2 | 1 | ||
3 | The AST2500 SoC family changes the runtime behaviour of the hardware | ||
4 | strapping register (SCU70) to write-1-set/write-1-clear, with | ||
5 | write-1-clear implemented on the "read-only" SoC revision register | ||
6 | (SCU7C). For the the AST2400, the hardware strapping is | ||
7 | runtime-configured with read-modify-write semantics. | ||
8 | |||
9 | Signed-off-by: Andrew Jeffery <andrew@aj.id.au> | ||
10 | Reviewed-by: Joel Stanley <joel@jms.id.au> | ||
11 | Message-id: 20180709143524.17480-1-andrew@aj.id.au | ||
12 | Signed-off-by: Peter Maydell <peter.maydell@linaro.org> | ||
13 | --- | ||
14 | include/hw/misc/aspeed_scu.h | 2 ++ | ||
15 | hw/misc/aspeed_scu.c | 19 +++++++++++++++++-- | ||
16 | 2 files changed, 19 insertions(+), 2 deletions(-) | ||
17 | |||
18 | diff --git a/include/hw/misc/aspeed_scu.h b/include/hw/misc/aspeed_scu.h | ||
19 | index XXXXXXX..XXXXXXX 100644 | ||
20 | --- a/include/hw/misc/aspeed_scu.h | ||
21 | +++ b/include/hw/misc/aspeed_scu.h | ||
22 | @@ -XXX,XX +XXX,XX @@ typedef struct AspeedSCUState { | ||
23 | #define AST2500_A0_SILICON_REV 0x04000303U | ||
24 | #define AST2500_A1_SILICON_REV 0x04010303U | ||
25 | |||
26 | +#define ASPEED_IS_AST2500(si_rev) ((((si_rev) >> 24) & 0xff) == 0x04) | ||
27 | + | ||
28 | extern bool is_supported_silicon_rev(uint32_t silicon_rev); | ||
29 | |||
30 | #define ASPEED_SCU_PROT_KEY 0x1688A8A8 | ||
31 | diff --git a/hw/misc/aspeed_scu.c b/hw/misc/aspeed_scu.c | ||
32 | index XXXXXXX..XXXXXXX 100644 | ||
33 | --- a/hw/misc/aspeed_scu.c | ||
34 | +++ b/hw/misc/aspeed_scu.c | ||
35 | @@ -XXX,XX +XXX,XX @@ static void aspeed_scu_write(void *opaque, hwaddr offset, uint64_t data, | ||
36 | s->regs[reg] = data; | ||
37 | aspeed_scu_set_apb_freq(s); | ||
38 | break; | ||
39 | - | ||
40 | + case HW_STRAP1: | ||
41 | + if (ASPEED_IS_AST2500(s->regs[SILICON_REV])) { | ||
42 | + s->regs[HW_STRAP1] |= data; | ||
43 | + return; | ||
44 | + } | ||
45 | + /* Jump to assignment below */ | ||
46 | + break; | ||
47 | + case SILICON_REV: | ||
48 | + if (ASPEED_IS_AST2500(s->regs[SILICON_REV])) { | ||
49 | + s->regs[HW_STRAP1] &= ~data; | ||
50 | + } else { | ||
51 | + qemu_log_mask(LOG_GUEST_ERROR, | ||
52 | + "%s: Write to read-only offset 0x%" HWADDR_PRIx "\n", | ||
53 | + __func__, offset); | ||
54 | + } | ||
55 | + /* Avoid assignment below, we've handled everything */ | ||
56 | + return; | ||
57 | case FREQ_CNTR_EVAL: | ||
58 | case VGA_SCRATCH1 ... VGA_SCRATCH8: | ||
59 | case RNG_DATA: | ||
60 | - case SILICON_REV: | ||
61 | case FREE_CNTR4: | ||
62 | case FREE_CNTR4_EXT: | ||
63 | qemu_log_mask(LOG_GUEST_ERROR, | ||
64 | -- | ||
65 | 2.17.1 | ||
66 | |||
67 | diff view generated by jsdifflib |
Deleted patch | |||
---|---|---|---|
1 | In gic_deactivate_irq() the interrupt number comes from the guest | ||
2 | (on a write to the GICC_DIR register), so we need to sanity check | ||
3 | that it isn't out of range before we use it as an array index. | ||
4 | Handle this in a similar manner to the check we do in | ||
5 | gic_complete_irq() for the GICC_EOI register. | ||
6 | 1 | ||
7 | The array overrun is not disastrous because the calling code | ||
8 | uses (value & 0x3ff) to extract the interrupt field, so the | ||
9 | only out-of-range values possible are 1020..1023, which allow | ||
10 | overrunning only from irq_state[] into the following | ||
11 | irq_target[] array which the guest can already manipulate. | ||
12 | |||
13 | Signed-off-by: Peter Maydell <peter.maydell@linaro.org> | ||
14 | Reviewed-by: Richard Henderson <richard.henderson@linaro.org> | ||
15 | Reviewed-by: Luc Michel <luc.michel@greensocs.com> | ||
16 | Message-id: 20180712154152.32183-2-peter.maydell@linaro.org | ||
17 | --- | ||
18 | hw/intc/arm_gic.c | 16 +++++++++++++++- | ||
19 | 1 file changed, 15 insertions(+), 1 deletion(-) | ||
20 | |||
21 | diff --git a/hw/intc/arm_gic.c b/hw/intc/arm_gic.c | ||
22 | index XXXXXXX..XXXXXXX 100644 | ||
23 | --- a/hw/intc/arm_gic.c | ||
24 | +++ b/hw/intc/arm_gic.c | ||
25 | @@ -XXX,XX +XXX,XX @@ static bool gic_eoi_split(GICState *s, int cpu, MemTxAttrs attrs) | ||
26 | static void gic_deactivate_irq(GICState *s, int cpu, int irq, MemTxAttrs attrs) | ||
27 | { | ||
28 | int cm = 1 << cpu; | ||
29 | - int group = gic_has_groups(s) && GIC_TEST_GROUP(irq, cm); | ||
30 | + int group; | ||
31 | + | ||
32 | + if (irq >= s->num_irq) { | ||
33 | + /* | ||
34 | + * This handles two cases: | ||
35 | + * 1. If software writes the ID of a spurious interrupt [ie 1023] | ||
36 | + * to the GICC_DIR, the GIC ignores that write. | ||
37 | + * 2. If software writes the number of a non-existent interrupt | ||
38 | + * this must be a subcase of "value written is not an active interrupt" | ||
39 | + * and so this is UNPREDICTABLE. We choose to ignore it. | ||
40 | + */ | ||
41 | + return; | ||
42 | + } | ||
43 | + | ||
44 | + group = gic_has_groups(s) && GIC_TEST_GROUP(irq, cm); | ||
45 | |||
46 | if (!gic_eoi_split(s, cpu, attrs)) { | ||
47 | /* This is UNPREDICTABLE; we choose to ignore it */ | ||
48 | -- | ||
49 | 2.17.1 | ||
50 | |||
51 | diff view generated by jsdifflib |
Deleted patch | |||
---|---|---|---|
1 | The GICD_ITARGETSR implementation still has some 11MPCore behaviour | ||
2 | that we were incorrectly using in our GICv1 and GICv2 implementations | ||
3 | for the case where the interrupt number is less than GIC_INTERNAL. | ||
4 | The desired behaviour here is: | ||
5 | * for 11MPCore: RAZ/WI for irqs 0..28; read a number matching the | ||
6 | CPU doing the read for irqs 29..31 | ||
7 | * for GICv1 and v2: RAZ/WI if uniprocessor; otherwise read a | ||
8 | number matching the CPU doing the read for all irqs < 32 | ||
9 | 1 | ||
10 | Stop squashing GICD_ITARGETSR to 0 for IRQs 0..28 unless this | ||
11 | is an 11MPCore GIC. | ||
12 | |||
13 | Reported-by: Jan Kiszka <jan.kiszka@web.de> | ||
14 | Signed-off-by: Peter Maydell <peter.maydell@linaro.org> | ||
15 | Reviewed-by: Richard Henderson <richard.henderson@linaro.org> | ||
16 | Reviewed-by: Luc Michel <luc.michel@greensocs.com> | ||
17 | Message-id: 20180712154152.32183-3-peter.maydell@linaro.org | ||
18 | --- | ||
19 | hw/intc/arm_gic.c | 6 ++++-- | ||
20 | 1 file changed, 4 insertions(+), 2 deletions(-) | ||
21 | |||
22 | diff --git a/hw/intc/arm_gic.c b/hw/intc/arm_gic.c | ||
23 | index XXXXXXX..XXXXXXX 100644 | ||
24 | --- a/hw/intc/arm_gic.c | ||
25 | +++ b/hw/intc/arm_gic.c | ||
26 | @@ -XXX,XX +XXX,XX @@ static uint32_t gic_dist_readb(void *opaque, hwaddr offset, MemTxAttrs attrs) | ||
27 | if (irq >= s->num_irq) { | ||
28 | goto bad_reg; | ||
29 | } | ||
30 | - if (irq >= 29 && irq <= 31) { | ||
31 | + if (irq < 29 && s->revision == REV_11MPCORE) { | ||
32 | + res = 0; | ||
33 | + } else if (irq < GIC_INTERNAL) { | ||
34 | res = cm; | ||
35 | } else { | ||
36 | res = GIC_TARGET(irq); | ||
37 | @@ -XXX,XX +XXX,XX @@ static void gic_dist_writeb(void *opaque, hwaddr offset, | ||
38 | if (irq >= s->num_irq) { | ||
39 | goto bad_reg; | ||
40 | } | ||
41 | - if (irq < 29) { | ||
42 | + if (irq < 29 && s->revision == REV_11MPCORE) { | ||
43 | value = 0; | ||
44 | } else if (irq < GIC_INTERNAL) { | ||
45 | value = ALL_CPU_MASK; | ||
46 | -- | ||
47 | 2.17.1 | ||
48 | |||
49 | diff view generated by jsdifflib |
Deleted patch | |||
---|---|---|---|
1 | From: Thomas Huth <thuth@redhat.com> | ||
2 | 1 | ||
3 | These devices are currently causing some problems when a user is trying | ||
4 | to hot-plug or introspect them during runtime. Since these devices can | ||
5 | not be instantiated by the user at all (they need to be wired up in code | ||
6 | instead), we should mark them with user_creatable = false anyway, then we | ||
7 | avoid at least the crashes with the hot-plugging. The introspection problem | ||
8 | will be handled by a separate patch. | ||
9 | |||
10 | Signed-off-by: Thomas Huth <thuth@redhat.com> | ||
11 | Message-id: 1531415537-26037-1-git-send-email-thuth@redhat.com | ||
12 | Reviewed-by: Peter Maydell <peter.maydell@linaro.org> | ||
13 | Reviewed-by: Markus Armbruster <armbru@redhat.com> | ||
14 | Signed-off-by: Peter Maydell <peter.maydell@linaro.org> | ||
15 | --- | ||
16 | hw/arm/bcm2836.c | 2 ++ | ||
17 | 1 file changed, 2 insertions(+) | ||
18 | |||
19 | diff --git a/hw/arm/bcm2836.c b/hw/arm/bcm2836.c | ||
20 | index XXXXXXX..XXXXXXX 100644 | ||
21 | --- a/hw/arm/bcm2836.c | ||
22 | +++ b/hw/arm/bcm2836.c | ||
23 | @@ -XXX,XX +XXX,XX @@ static void bcm283x_class_init(ObjectClass *oc, void *data) | ||
24 | bc->info = data; | ||
25 | dc->realize = bcm2836_realize; | ||
26 | dc->props = bcm2836_props; | ||
27 | + /* Reason: Must be wired up in code (see raspi_init() function) */ | ||
28 | + dc->user_creatable = false; | ||
29 | } | ||
30 | |||
31 | static const TypeInfo bcm283x_type_info = { | ||
32 | -- | ||
33 | 2.17.1 | ||
34 | |||
35 | diff view generated by jsdifflib |
Deleted patch | |||
---|---|---|---|
1 | From: Guenter Roeck <linux@roeck-us.net> | ||
2 | 1 | ||
3 | RX and TX interrupt bits were reversed, resulting in an endless sequence | ||
4 | of serial interupts in the emulated system and the following repeated | ||
5 | error message when booting Linux. | ||
6 | |||
7 | serial8250: too much work for irq61 | ||
8 | |||
9 | This results in a boot failure most of the time. | ||
10 | |||
11 | Qemu command line used to reproduce the problem: | ||
12 | |||
13 | qemu-system-aarch64 -M raspi3 -m 1024 \ | ||
14 | -kernel arch/arm64/boot/Image \ | ||
15 | --append "rdinit=/sbin/init console=ttyS1,115200" | ||
16 | -initrd rootfs.cpio \ | ||
17 | -dtb arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dtb \ | ||
18 | -nographic -monitor null -serial null -serial stdio | ||
19 | |||
20 | This is with arm64:defconfig. The root file system was generated using | ||
21 | buildroot. | ||
22 | |||
23 | NB that this error likely arises from an erratum in the | ||
24 | BCM2835 datasheet where the TX and RX bits were swapped | ||
25 | in the AU_MU_IER_REG description (but correct for IIR): | ||
26 | https://elinux.org/BCM2835_datasheet_errata#p12 | ||
27 | |||
28 | Signed-off-by: Guenter Roeck <linux@roeck-us.net> | ||
29 | Message-id: 1529355846-25102-1-git-send-email-linux@roeck-us.net | ||
30 | Reviewed-by: Peter Maydell <peter.maydell@linaro.org> | ||
31 | [PMM: added NB about datasheet] | ||
32 | Signed-off-by: Peter Maydell <peter.maydell@linaro.org> | ||
33 | --- | ||
34 | hw/char/bcm2835_aux.c | 4 ++-- | ||
35 | 1 file changed, 2 insertions(+), 2 deletions(-) | ||
36 | |||
37 | diff --git a/hw/char/bcm2835_aux.c b/hw/char/bcm2835_aux.c | ||
38 | index XXXXXXX..XXXXXXX 100644 | ||
39 | --- a/hw/char/bcm2835_aux.c | ||
40 | +++ b/hw/char/bcm2835_aux.c | ||
41 | @@ -XXX,XX +XXX,XX @@ | ||
42 | #define AUX_MU_BAUD_REG 0x68 | ||
43 | |||
44 | /* bits in IER/IIR registers */ | ||
45 | -#define TX_INT 0x1 | ||
46 | -#define RX_INT 0x2 | ||
47 | +#define RX_INT 0x1 | ||
48 | +#define TX_INT 0x2 | ||
49 | |||
50 | static void bcm2835_aux_update(BCM2835AuxState *s) | ||
51 | { | ||
52 | -- | ||
53 | 2.17.1 | ||
54 | |||
55 | diff view generated by jsdifflib |
Deleted patch | |||
---|---|---|---|
1 | In get_page_addr_code(), we were incorrectly looking in the victim | ||
2 | TLB for an entry which matched the target address for reads, not | ||
3 | for code accesses. This meant that we could hit on a victim TLB | ||
4 | entry that indicated that the address was readable but not | ||
5 | executable, and incorrectly bypass the call to tlb_fill() which | ||
6 | should generate the guest MMU exception. Fix this bug. | ||
7 | 1 | ||
8 | Signed-off-by: Peter Maydell <peter.maydell@linaro.org> | ||
9 | Reviewed-by: Richard Henderson <richard.henderson@linaro.org> | ||
10 | Message-id: 20180713141636.18665-2-peter.maydell@linaro.org | ||
11 | --- | ||
12 | accel/tcg/cputlb.c | 2 +- | ||
13 | 1 file changed, 1 insertion(+), 1 deletion(-) | ||
14 | |||
15 | diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c | ||
16 | index XXXXXXX..XXXXXXX 100644 | ||
17 | --- a/accel/tcg/cputlb.c | ||
18 | +++ b/accel/tcg/cputlb.c | ||
19 | @@ -XXX,XX +XXX,XX @@ tb_page_addr_t get_page_addr_code(CPUArchState *env, target_ulong addr) | ||
20 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | ||
21 | mmu_idx = cpu_mmu_index(env, true); | ||
22 | if (unlikely(!tlb_hit(env->tlb_table[mmu_idx][index].addr_code, addr))) { | ||
23 | - if (!VICTIM_TLB_HIT(addr_read, addr)) { | ||
24 | + if (!VICTIM_TLB_HIT(addr_code, addr)) { | ||
25 | tlb_fill(ENV_GET_CPU(env), addr, 0, MMU_INST_FETCH, mmu_idx, 0); | ||
26 | } | ||
27 | } | ||
28 | -- | ||
29 | 2.17.1 | ||
30 | |||
31 | diff view generated by jsdifflib |
Deleted patch | |||
---|---|---|---|
1 | In commit 4b1a3e1e34ad97 we added a check for whether the TLB entry | ||
2 | we had following a tlb_fill had the INVALID bit set. This could | ||
3 | happen in some circumstances because a stale or wrong TLB entry was | ||
4 | pulled out of the victim cache. However, after commit | ||
5 | 68fea038553039e (which prevents stale entries being in the victim | ||
6 | cache) and the previous commit (which ensures we don't incorrectly | ||
7 | hit in the victim cache)) this should never be possible. | ||
8 | 1 | ||
9 | Drop the check on TLB_INVALID_MASK from the "is this a TLB_RECHECK?" | ||
10 | condition, and instead assert that the tlb fill procedure has given | ||
11 | us a valid TLB entry (or longjumped out with a guest exception). | ||
12 | |||
13 | Signed-off-by: Peter Maydell <peter.maydell@linaro.org> | ||
14 | Reviewed-by: Richard Henderson <richard.henderson@linaro.org> | ||
15 | Message-id: 20180713141636.18665-3-peter.maydell@linaro.org | ||
16 | --- | ||
17 | accel/tcg/cputlb.c | 4 ++-- | ||
18 | 1 file changed, 2 insertions(+), 2 deletions(-) | ||
19 | |||
20 | diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c | ||
21 | index XXXXXXX..XXXXXXX 100644 | ||
22 | --- a/accel/tcg/cputlb.c | ||
23 | +++ b/accel/tcg/cputlb.c | ||
24 | @@ -XXX,XX +XXX,XX @@ tb_page_addr_t get_page_addr_code(CPUArchState *env, target_ulong addr) | ||
25 | if (!VICTIM_TLB_HIT(addr_code, addr)) { | ||
26 | tlb_fill(ENV_GET_CPU(env), addr, 0, MMU_INST_FETCH, mmu_idx, 0); | ||
27 | } | ||
28 | + assert(tlb_hit(env->tlb_table[mmu_idx][index].addr_code, addr)); | ||
29 | } | ||
30 | |||
31 | - if (unlikely((env->tlb_table[mmu_idx][index].addr_code & | ||
32 | - (TLB_RECHECK | TLB_INVALID_MASK)) == TLB_RECHECK)) { | ||
33 | + if (unlikely(env->tlb_table[mmu_idx][index].addr_code & TLB_RECHECK)) { | ||
34 | /* | ||
35 | * This is a TLB_RECHECK access, where the MMU protection | ||
36 | * covers a smaller range than a target page, and we must | ||
37 | -- | ||
38 | 2.17.1 | ||
39 | |||
40 | diff view generated by jsdifflib |