Re: [PATCH v2 0/3] Change default pointer authentication algorithm on aarch64 to impdef

2025-01-13 Thread Alex Bennée
Peter Maydell writes: > On Fri, 10 Jan 2025 at 16:28, Peter Maydell wrote: >> >> On Thu, 19 Dec 2024 at 18:32, Pierrick Bouvier >> wrote: >> > >> > qemu-system-aarch64 default pointer authentication (QARMA5) is expensive, >> > we >> > spent up to 50% of the emulation time running it (when usin

Re: [PATCH v2 0/3] Change default pointer authentication algorithm on aarch64 to impdef

2025-01-13 Thread Pierrick Bouvier
On 1/13/25 11:32, Pierrick Bouvier wrote: On 1/13/25 04:34, Peter Maydell wrote: On Fri, 10 Jan 2025 at 16:28, Peter Maydell wrote: On Thu, 19 Dec 2024 at 18:32, Pierrick Bouvier wrote: qemu-system-aarch64 default pointer authentication (QARMA5) is expensive, we spent up to 50% of the emul

Re: [PATCH v2 0/3] Change default pointer authentication algorithm on aarch64 to impdef

2025-01-13 Thread Pierrick Bouvier
On 1/13/25 04:34, Peter Maydell wrote: On Fri, 10 Jan 2025 at 16:28, Peter Maydell wrote: On Thu, 19 Dec 2024 at 18:32, Pierrick Bouvier wrote: qemu-system-aarch64 default pointer authentication (QARMA5) is expensive, we spent up to 50% of the emulation time running it (when using TCG). Sw

Re: [PATCH v2 0/3] Change default pointer authentication algorithm on aarch64 to impdef

2025-01-13 Thread Peter Maydell
On Fri, 10 Jan 2025 at 16:28, Peter Maydell wrote: > > On Thu, 19 Dec 2024 at 18:32, Pierrick Bouvier > wrote: > > > > qemu-system-aarch64 default pointer authentication (QARMA5) is expensive, we > > spent up to 50% of the emulation time running it (when using TCG). > > > > Switching to pauth-imp

Re: [PATCH v2 0/3] Change default pointer authentication algorithm on aarch64 to impdef

2025-01-10 Thread Pierrick Bouvier
On 1/10/25 08:28, Peter Maydell wrote: On Thu, 19 Dec 2024 at 18:32, Pierrick Bouvier wrote: qemu-system-aarch64 default pointer authentication (QARMA5) is expensive, we spent up to 50% of the emulation time running it (when using TCG). Switching to pauth-impdef=on is often given as a solutio

Re: [PATCH v2 0/3] Change default pointer authentication algorithm on aarch64 to impdef

2025-01-10 Thread Peter Maydell
On Thu, 19 Dec 2024 at 18:32, Pierrick Bouvier wrote: > > qemu-system-aarch64 default pointer authentication (QARMA5) is expensive, we > spent up to 50% of the emulation time running it (when using TCG). > > Switching to pauth-impdef=on is often given as a solution to speed up > execution. > Thus

[PATCH v2 0/3] Change default pointer authentication algorithm on aarch64 to impdef

2024-12-19 Thread Pierrick Bouvier
qemu-system-aarch64 default pointer authentication (QARMA5) is expensive, we spent up to 50% of the emulation time running it (when using TCG). Switching to pauth-impdef=on is often given as a solution to speed up execution. Thus we talked about making it the new default. The first patch introduc