[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen master] xen/arm: add SVE exception class handling
commit 3c6e7262410fe95f96aae32765531de41a6f392f Author: Luca Fancellu <luca.fancellu@xxxxxxx> AuthorDate: Wed May 31 08:24:05 2023 +0100 Commit: Julien Grall <jgrall@xxxxxxxxxx> CommitDate: Wed Jun 7 11:21:41 2023 +0100 xen/arm: add SVE exception class handling SVE has a new exception class with code 0x19, introduce the new code and handle the exception. Signed-off-by: Luca Fancellu <luca.fancellu@xxxxxxx> Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx> Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx> --- xen/arch/arm/include/asm/processor.h | 1 + xen/arch/arm/traps.c | 9 +++++++++ 2 files changed, 10 insertions(+) diff --git a/xen/arch/arm/include/asm/processor.h b/xen/arch/arm/include/asm/processor.h index bc68333412..7e42ff8811 100644 --- a/xen/arch/arm/include/asm/processor.h +++ b/xen/arch/arm/include/asm/processor.h @@ -426,6 +426,7 @@ #define HSR_EC_HVC64 0x16 #define HSR_EC_SMC64 0x17 #define HSR_EC_SYSREG 0x18 +#define HSR_EC_SVE 0x19 #endif #define HSR_EC_INSTR_ABORT_LOWER_EL 0x20 #define HSR_EC_INSTR_ABORT_CURR_EL 0x21 diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c index 3393e10b52..f6437f6aa9 100644 --- a/xen/arch/arm/traps.c +++ b/xen/arch/arm/traps.c @@ -2172,6 +2172,11 @@ void do_trap_guest_sync(struct cpu_user_regs *regs) perfc_incr(trap_sysreg); do_sysreg(regs, hsr); break; + case HSR_EC_SVE: + GUEST_BUG_ON(regs_mode_is_32bit(regs)); + gprintk(XENLOG_WARNING, "Domain tried to use SVE while not allowed\n"); + inject_undef_exception(regs, hsr); + break; #endif case HSR_EC_INSTR_ABORT_LOWER_EL: @@ -2201,6 +2206,10 @@ void do_trap_hyp_sync(struct cpu_user_regs *regs) case HSR_EC_BRK: do_trap_brk(regs, hsr); break; + case HSR_EC_SVE: + /* An SVE exception is a bug somewhere in hypervisor code */ + do_unexpected_trap("SVE trap at EL2", regs); + break; #endif case HSR_EC_DATA_ABORT_CURR_EL: case HSR_EC_INSTR_ABORT_CURR_EL: -- generated by git-patchbot for /home/xen/git/xen.git#master
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